]> jfr.im git - yt-dlp.git/blobdiff - yt_dlp/extractor/youtube.py
[extractor/youtube] Retry manifest refresh for live-from-start (#5670)
[yt-dlp.git] / yt_dlp / extractor / youtube.py
index 636bf42b602e4ef9a82d3ab0492392fb72a20560..855a76012f005f3ea6da36ff8baf677ddb10734b 100644 (file)
@@ -1,11 +1,9 @@
-# coding: utf-8
-
-from __future__ import unicode_literals
-
+import base64
 import calendar
+import collections
 import copy
 import datetime
-import functools
+import enum
 import hashlib
 import itertools
 import json
 import random
 import re
 import sys
+import threading
 import time
 import traceback
-import threading
+import urllib.error
+import urllib.parse
 
 from .common import InfoExtractor, SearchInfoExtractor
-from ..compat import (
-    compat_chr,
-    compat_HTTPError,
-    compat_parse_qs,
-    compat_str,
-    compat_urllib_parse_unquote_plus,
-    compat_urllib_parse_urlencode,
-    compat_urllib_parse_urlparse,
-    compat_urlparse,
-)
+from .openload import PhantomJSwrapper
+from ..compat import functools
 from ..jsinterp import JSInterpreter
 from ..utils import (
+    NO_DEFAULT,
+    ExtractorError,
+    LazyList,
+    UserNotLive,
     bug_reports_message,
+    classproperty,
     clean_html,
     datetime_from_str,
     dict_get,
-    error_to_compat_str,
-    ExtractorError,
+    filter_dict,
     float_or_none,
     format_field,
+    get_first,
     int_or_none,
     is_html,
     join_nonempty,
     js_to_json,
     mimetype2ext,
     network_exceptions,
-    NO_DEFAULT,
     orderedSet,
     parse_codecs,
     parse_count,
@@ -53,7 +49,6 @@
     parse_iso8601,
     parse_qs,
     qualities,
-    remove_end,
     remove_start,
     smuggle_url,
     str_or_none,
     variadic,
 )
 
-
-def get_first(obj, keys, **kwargs):
-    return traverse_obj(obj, (..., *variadic(keys)), **kwargs, get_all=False)
-
-
-# any clients starting with _ cannot be explicity requested by the user
+# any clients starting with _ cannot be explicitly requested by the user
 INNERTUBE_CLIENTS = {
     'web': {
         'INNERTUBE_API_KEY': 'AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8',
         'INNERTUBE_CONTEXT': {
             'client': {
                 'clientName': 'WEB',
-                'clientVersion': '2.20211221.00.00',
+                'clientVersion': '2.20220801.00.00',
             }
         },
         'INNERTUBE_CONTEXT_CLIENT_NAME': 1
@@ -93,7 +83,7 @@ def get_first(obj, keys, **kwargs):
         'INNERTUBE_CONTEXT': {
             'client': {
                 'clientName': 'WEB_EMBEDDED_PLAYER',
-                'clientVersion': '1.20211215.00.01',
+                'clientVersion': '1.20220731.00.00',
             },
         },
         'INNERTUBE_CONTEXT_CLIENT_NAME': 56
@@ -104,7 +94,7 @@ def get_first(obj, keys, **kwargs):
         'INNERTUBE_CONTEXT': {
             'client': {
                 'clientName': 'WEB_REMIX',
-                'clientVersion': '1.20211213.00.00',
+                'clientVersion': '1.20220727.01.00',
             }
         },
         'INNERTUBE_CONTEXT_CLIENT_NAME': 67,
@@ -114,7 +104,7 @@ def get_first(obj, keys, **kwargs):
         'INNERTUBE_CONTEXT': {
             'client': {
                 'clientName': 'WEB_CREATOR',
-                'clientVersion': '1.20211220.02.00',
+                'clientVersion': '1.20220726.00.00',
             }
         },
         'INNERTUBE_CONTEXT_CLIENT_NAME': 62,
@@ -124,7 +114,9 @@ def get_first(obj, keys, **kwargs):
         'INNERTUBE_CONTEXT': {
             'client': {
                 'clientName': 'ANDROID',
-                'clientVersion': '16.49',
+                'clientVersion': '17.31.35',
+                'androidSdkVersion': 30,
+                'userAgent': 'com.google.android.youtube/17.31.35 (Linux; U; Android 11) gzip'
             }
         },
         'INNERTUBE_CONTEXT_CLIENT_NAME': 3,
@@ -135,7 +127,9 @@ def get_first(obj, keys, **kwargs):
         'INNERTUBE_CONTEXT': {
             'client': {
                 'clientName': 'ANDROID_EMBEDDED_PLAYER',
-                'clientVersion': '16.49',
+                'clientVersion': '17.31.35',
+                'androidSdkVersion': 30,
+                'userAgent': 'com.google.android.youtube/17.31.35 (Linux; U; Android 11) gzip'
             },
         },
         'INNERTUBE_CONTEXT_CLIENT_NAME': 55,
@@ -146,7 +140,9 @@ def get_first(obj, keys, **kwargs):
         'INNERTUBE_CONTEXT': {
             'client': {
                 'clientName': 'ANDROID_MUSIC',
-                'clientVersion': '4.57',
+                'clientVersion': '5.16.51',
+                'androidSdkVersion': 30,
+                'userAgent': 'com.google.android.apps.youtube.music/5.16.51 (Linux; U; Android 11) gzip'
             }
         },
         'INNERTUBE_CONTEXT_CLIENT_NAME': 21,
@@ -157,7 +153,9 @@ def get_first(obj, keys, **kwargs):
         'INNERTUBE_CONTEXT': {
             'client': {
                 'clientName': 'ANDROID_CREATOR',
-                'clientVersion': '21.47',
+                'clientVersion': '22.30.100',
+                'androidSdkVersion': 30,
+                'userAgent': 'com.google.android.apps.youtube.creator/22.30.100 (Linux; U; Android 11) gzip'
             },
         },
         'INNERTUBE_CONTEXT_CLIENT_NAME': 14,
@@ -170,8 +168,9 @@ def get_first(obj, keys, **kwargs):
         'INNERTUBE_CONTEXT': {
             'client': {
                 'clientName': 'IOS',
-                'clientVersion': '16.46',
+                'clientVersion': '17.33.2',
                 'deviceModel': 'iPhone14,3',
+                'userAgent': 'com.google.ios.youtube/17.33.2 (iPhone14,3; U; CPU iOS 15_6 like Mac OS X)'
             }
         },
         'INNERTUBE_CONTEXT_CLIENT_NAME': 5,
@@ -181,8 +180,9 @@ def get_first(obj, keys, **kwargs):
         'INNERTUBE_CONTEXT': {
             'client': {
                 'clientName': 'IOS_MESSAGES_EXTENSION',
-                'clientVersion': '16.46',
+                'clientVersion': '17.33.2',
                 'deviceModel': 'iPhone14,3',
+                'userAgent': 'com.google.ios.youtube/17.33.2 (iPhone14,3; U; CPU iOS 15_6 like Mac OS X)'
             },
         },
         'INNERTUBE_CONTEXT_CLIENT_NAME': 66,
@@ -193,7 +193,9 @@ def get_first(obj, keys, **kwargs):
         'INNERTUBE_CONTEXT': {
             'client': {
                 'clientName': 'IOS_MUSIC',
-                'clientVersion': '4.57',
+                'clientVersion': '5.21',
+                'deviceModel': 'iPhone14,3',
+                'userAgent': 'com.google.ios.youtubemusic/5.21 (iPhone14,3; U; CPU iOS 15_6 like Mac OS X)'
             },
         },
         'INNERTUBE_CONTEXT_CLIENT_NAME': 26,
@@ -203,7 +205,9 @@ def get_first(obj, keys, **kwargs):
         'INNERTUBE_CONTEXT': {
             'client': {
                 'clientName': 'IOS_CREATOR',
-                'clientVersion': '21.47',
+                'clientVersion': '22.33.101',
+                'deviceModel': 'iPhone14,3',
+                'userAgent': 'com.google.ios.ytcreator/22.33.101 (iPhone14,3; U; CPU iOS 15_6 like Mac OS X)'
             },
         },
         'INNERTUBE_CONTEXT_CLIENT_NAME': 15,
@@ -216,19 +220,39 @@ def get_first(obj, keys, **kwargs):
         'INNERTUBE_CONTEXT': {
             'client': {
                 'clientName': 'MWEB',
-                'clientVersion': '2.20211221.01.00',
+                'clientVersion': '2.20220801.00.00',
             }
         },
         'INNERTUBE_CONTEXT_CLIENT_NAME': 2
-    }
+    },
+    # This client can access age restricted videos (unless the uploader has disabled the 'allow embedding' option)
+    # See: https://github.com/zerodytrash/YouTube-Internal-Clients
+    'tv_embedded': {
+        'INNERTUBE_API_KEY': 'AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8',
+        'INNERTUBE_CONTEXT': {
+            'client': {
+                'clientName': 'TVHTML5_SIMPLY_EMBEDDED_PLAYER',
+                'clientVersion': '2.0',
+            },
+        },
+        'INNERTUBE_CONTEXT_CLIENT_NAME': 85
+    },
 }
 
 
+def _split_innertube_client(client_name):
+    variant, *base = client_name.rsplit('.', 1)
+    if base:
+        return variant, base[0], variant
+    base, *variant = client_name.split('_', 1)
+    return client_name, base, variant[0] if variant else None
+
+
 def build_innertube_clients():
     THIRD_PARTY = {
-        'embedUrl': 'https://google.com',  # Can be any valid URL
+        'embedUrl': 'https://www.youtube.com/',  # Can be any valid URL
     }
-    BASE_CLIENTS = ('android', 'web', 'ios', 'mweb')
+    BASE_CLIENTS = ('android', 'web', 'tv', 'ios', 'mweb')
     priority = qualities(BASE_CLIENTS[::-1])
 
     for client, ytcfg in tuple(INNERTUBE_CLIENTS.items()):
@@ -237,34 +261,45 @@ def build_innertube_clients():
         ytcfg.setdefault('REQUIRE_JS_PLAYER', True)
         ytcfg['INNERTUBE_CONTEXT']['client'].setdefault('hl', 'en')
 
-        base_client, *variant = client.split('_')
+        _, base_client, variant = _split_innertube_client(client)
         ytcfg['priority'] = 10 * priority(base_client)
 
-        if variant == ['embedded']:
+        if not variant:
+            INNERTUBE_CLIENTS[f'{client}_embedscreen'] = embedscreen = copy.deepcopy(ytcfg)
+            embedscreen['INNERTUBE_CONTEXT']['client']['clientScreen'] = 'EMBED'
+            embedscreen['INNERTUBE_CONTEXT']['thirdParty'] = THIRD_PARTY
+            embedscreen['priority'] -= 3
+        elif variant == 'embedded':
             ytcfg['INNERTUBE_CONTEXT']['thirdParty'] = THIRD_PARTY
-            INNERTUBE_CLIENTS[f'{base_client}_agegate'] = agegate_ytcfg = copy.deepcopy(ytcfg)
-            agegate_ytcfg['INNERTUBE_CONTEXT']['client']['clientScreen'] = 'EMBED'
-            agegate_ytcfg['priority'] -= 1
             ytcfg['priority'] -= 2
-        elif variant:
+        else:
             ytcfg['priority'] -= 3
 
 
 build_innertube_clients()
 
 
+class BadgeType(enum.Enum):
+    AVAILABILITY_UNLISTED = enum.auto()
+    AVAILABILITY_PRIVATE = enum.auto()
+    AVAILABILITY_PUBLIC = enum.auto()
+    AVAILABILITY_PREMIUM = enum.auto()
+    AVAILABILITY_SUBSCRIPTION = enum.auto()
+    LIVE_NOW = enum.auto()
+
+
 class YoutubeBaseInfoExtractor(InfoExtractor):
     """Provide base functions for Youtube extractors"""
 
     _RESERVED_NAMES = (
-        r'channel|c|user|playlist|watch|w|v|embed|e|watch_popup|clip|'
+        r'channel|c|user|playlist|watch|w|v|embed|e|live|watch_popup|clip|'
         r'shorts|movies|results|search|shared|hashtag|trending|explore|feed|feeds|'
-        r'browse|oembed|get_video_info|iframe_api|s/player|'
-        r'storefront|oops|index|account|reporthistory|t/terms|about|upload|signin|logout')
+        r'browse|oembed|get_video_info|iframe_api|s/player|source|'
+        r'storefront|oops|index|account|t/terms|about|upload|signin|logout')
 
     _PLAYLIST_ID_RE = r'(?:(?:PL|LL|EC|UU|FL|RD|UL|TL|PU|OLAK5uy_)[0-9A-Za-z-_]{10,}|RDMM|WL|LL|LM)'
 
-    _NETRC_MACHINE = 'youtube'
+    _NETRC_MACHINE = 'youtube'
 
     # If True it will raise an error if no login info is provided
     _LOGIN_REQUIRED = False
@@ -273,7 +308,7 @@ class YoutubeBaseInfoExtractor(InfoExtractor):
         # invidious-redirect websites
         r'(?:www\.)?redirect\.invidious\.io',
         r'(?:(?:www|dev)\.)?invidio\.us',
-        # Invidious instances taken from https://github.com/iv-org/documentation/blob/master/Invidious-Instances.md
+        # Invidious instances taken from https://github.com/iv-org/documentation/blob/master/docs/instances.md
         r'(?:www\.)?invidious\.pussthecat\.org',
         r'(?:www\.)?invidious\.zee\.li',
         r'(?:www\.)?invidious\.ethibox\.fr',
@@ -333,22 +368,61 @@ class YoutubeBaseInfoExtractor(InfoExtractor):
         r'(?:www\.)?kbjggqkzv65ivcqj6bumvp337z6264huv5kpkwuv6gu5yjiskvan7fad\.onion',
         r'(?:www\.)?grwp24hodrefzvjjuccrkw3mjq4tzhaaq32amf33dzpmuxe7ilepcmad\.onion',
         r'(?:www\.)?hpniueoejy4opn7bc4ftgazyqjoeqwlvh2uiku2xqku6zpoa4bf5ruid\.onion',
+        # piped instances from https://github.com/TeamPiped/Piped/wiki/Instances
+        r'(?:www\.)?piped\.kavin\.rocks',
+        r'(?:www\.)?piped\.tokhmi\.xyz',
+        r'(?:www\.)?piped\.syncpundit\.io',
+        r'(?:www\.)?piped\.mha\.fi',
+        r'(?:www\.)?watch\.whatever\.social',
+        r'(?:www\.)?piped\.garudalinux\.org',
+        r'(?:www\.)?piped\.rivo\.lol',
+        r'(?:www\.)?piped-libre\.kavin\.rocks',
+        r'(?:www\.)?yt\.jae\.fi',
+        r'(?:www\.)?piped\.mint\.lgbt',
+        r'(?:www\.)?il\.ax',
+        r'(?:www\.)?piped\.esmailelbob\.xyz',
+        r'(?:www\.)?piped\.projectsegfau\.lt',
+        r'(?:www\.)?piped\.privacydev\.net',
+        r'(?:www\.)?piped\.palveluntarjoaja\.eu',
+        r'(?:www\.)?piped\.smnz\.de',
+        r'(?:www\.)?piped\.adminforge\.de',
+        r'(?:www\.)?watch\.whatevertinfoil\.de',
+        r'(?:www\.)?piped\.qdi\.fi',
+        r'(?:www\.)?piped\.video',
+        r'(?:www\.)?piped\.aeong\.one',
     )
 
-    def _login(self):
+    # extracted from account/account_menu ep
+    # XXX: These are the supported YouTube UI and API languages,
+    # which is slightly different from languages supported for translation in YouTube studio
+    _SUPPORTED_LANG_CODES = [
+        'af', 'az', 'id', 'ms', 'bs', 'ca', 'cs', 'da', 'de', 'et', 'en-IN', 'en-GB', 'en', 'es',
+        'es-419', 'es-US', 'eu', 'fil', 'fr', 'fr-CA', 'gl', 'hr', 'zu', 'is', 'it', 'sw', 'lv',
+        'lt', 'hu', 'nl', 'no', 'uz', 'pl', 'pt-PT', 'pt', 'ro', 'sq', 'sk', 'sl', 'sr-Latn', 'fi',
+        'sv', 'vi', 'tr', 'be', 'bg', 'ky', 'kk', 'mk', 'mn', 'ru', 'sr', 'uk', 'el', 'hy', 'iw',
+        'ur', 'ar', 'fa', 'ne', 'mr', 'hi', 'as', 'bn', 'pa', 'gu', 'or', 'ta', 'te', 'kn', 'ml',
+        'si', 'th', 'lo', 'my', 'ka', 'am', 'km', 'zh-CN', 'zh-TW', 'zh-HK', 'ja', 'ko'
+    ]
+
+    _IGNORED_WARNINGS = {'Unavailable videos will be hidden during playback'}
+
+    @functools.cached_property
+    def _preferred_lang(self):
         """
-        Attempt to log in to YouTube.
-        If _LOGIN_REQUIRED is set and no authentication was provided, an error is raised.
+        Returns a language code supported by YouTube for the user preferred language.
+        Returns None if no preferred language set.
         """
-
-        if (self._LOGIN_REQUIRED
-                and self.get_param('cookiefile') is None
-                and self.get_param('cookiesfrombrowser') is None):
-            self.raise_login_required(
-                'Login details are needed to download this content', method='cookies')
-        username, password = self._get_login_info()
-        if username:
-            self.report_warning(f'Cannot login to YouTube using username and password. {self._LOGIN_HINTS["cookies"]}')
+        preferred_lang = self._configuration_arg('lang', ie_key='Youtube', casesense=True, default=[''])[0]
+        if not preferred_lang:
+            return
+        if preferred_lang not in self._SUPPORTED_LANG_CODES:
+            raise ExtractorError(
+                f'Unsupported language code: {preferred_lang}. Supported language codes (case-sensitive): {join_nonempty(*self._SUPPORTED_LANG_CODES, delim=", ")}.',
+                expected=True)
+        elif preferred_lang != 'en':
+            self.report_warning(
+                f'Preferring "{preferred_lang}" translated fields. Note that some metadata extraction may fail or be incorrect.')
+        return preferred_lang
 
     def _initialize_consent(self):
         cookies = self._get_cookies('https://www.youtube.com/')
@@ -371,20 +445,23 @@ def _initialize_pref(self):
         pref = {}
         if pref_cookie:
             try:
-                pref = dict(compat_urlparse.parse_qsl(pref_cookie.value))
+                pref = dict(urllib.parse.parse_qsl(pref_cookie.value))
             except ValueError:
                 self.report_warning('Failed to parse user PREF cookie' + bug_reports_message())
-        pref.update({'hl': 'en', 'tz': 'UTC'})
-        self._set_cookie('.youtube.com', name='PREF', value=compat_urllib_parse_urlencode(pref))
+        pref.update({'hl': self._preferred_lang or 'en', 'tz': 'UTC'})
+        self._set_cookie('.youtube.com', name='PREF', value=urllib.parse.urlencode(pref))
 
     def _real_initialize(self):
         self._initialize_pref()
         self._initialize_consent()
-        self._login()
+        self._check_login_required()
 
-    _YT_INITIAL_DATA_RE = r'(?:window\s*\[\s*["\']ytInitialData["\']\s*\]|ytInitialData)\s*=\s*({.+?})\s*;'
-    _YT_INITIAL_PLAYER_RESPONSE_RE = r'ytInitialPlayerResponse\s*=\s*({.+?})\s*;'
-    _YT_INITIAL_BOUNDARY_RE = r'(?:var\s+meta|</script|\n)'
+    def _check_login_required(self):
+        if self._LOGIN_REQUIRED and not self._cookies_passed:
+            self.raise_login_required('Login details are needed to download this content', method='cookies')
+
+    _YT_INITIAL_DATA_RE = r'(?:window\s*\[\s*["\']ytInitialData["\']\s*\]|ytInitialData)\s*='
+    _YT_INITIAL_PLAYER_RESPONSE_RE = r'ytInitialPlayerResponse\s*='
 
     def _get_default_ytcfg(self, client='web'):
         return copy.deepcopy(INNERTUBE_CLIENTS[client])
@@ -400,22 +477,26 @@ def _ytcfg_get_safe(self, ytcfg, getter, expected_type=None, default_client='web
     def _extract_client_name(self, ytcfg, default_client='web'):
         return self._ytcfg_get_safe(
             ytcfg, (lambda x: x['INNERTUBE_CLIENT_NAME'],
-                    lambda x: x['INNERTUBE_CONTEXT']['client']['clientName']), compat_str, default_client)
+                    lambda x: x['INNERTUBE_CONTEXT']['client']['clientName']), str, default_client)
 
     def _extract_client_version(self, ytcfg, default_client='web'):
         return self._ytcfg_get_safe(
             ytcfg, (lambda x: x['INNERTUBE_CLIENT_VERSION'],
-                    lambda x: x['INNERTUBE_CONTEXT']['client']['clientVersion']), compat_str, default_client)
+                    lambda x: x['INNERTUBE_CONTEXT']['client']['clientVersion']), str, default_client)
+
+    def _select_api_hostname(self, req_api_hostname, default_client=None):
+        return (self._configuration_arg('innertube_host', [''], ie_key=YoutubeIE.ie_key())[0]
+                or req_api_hostname or self._get_innertube_host(default_client or 'web'))
 
     def _extract_api_key(self, ytcfg=None, default_client='web'):
-        return self._ytcfg_get_safe(ytcfg, lambda x: x['INNERTUBE_API_KEY'], compat_str, default_client)
+        return self._ytcfg_get_safe(ytcfg, lambda x: x['INNERTUBE_API_KEY'], str, default_client)
 
     def _extract_context(self, ytcfg=None, default_client='web'):
         context = get_first(
             (ytcfg, self._get_default_ytcfg(default_client)), 'INNERTUBE_CONTEXT', expected_type=dict)
         # Enforce language and tz for extraction
         client_context = traverse_obj(context, 'client', expected_type=dict, default={})
-        client_context.update({'hl': 'en', 'timeZone': 'UTC', 'utcOffsetMinutes': 0})
+        client_context.update({'hl': self._preferred_lang or 'en', 'timeZone': 'UTC', 'utcOffsetMinutes': 0})
         return context
 
     _SAPISID = None
@@ -442,7 +523,7 @@ def _generate_sapisidhash_header(self, origin='https://www.youtube.com'):
             return None
         # SAPISIDHASH algorithm from https://stackoverflow.com/a/32065323
         sapisidhash = hashlib.sha1(
-            f'{time_now} {self._SAPISID} {origin}'.encode('utf-8')).hexdigest()
+            f'{time_now} {self._SAPISID} {origin}'.encode()).hexdigest()
         return f'SAPISIDHASH {time_now}_{sapisidhash}'
 
     def _call_api(self, ep, query, video_id, fatal=True, headers=None,
@@ -455,18 +536,16 @@ def _call_api(self, ep, query, video_id, fatal=True, headers=None,
         real_headers.update({'content-type': 'application/json'})
         if headers:
             real_headers.update(headers)
+        api_key = (self._configuration_arg('innertube_key', [''], ie_key=YoutubeIE.ie_key(), casesense=True)[0]
+                   or api_key or self._extract_api_key(default_client=default_client))
         return self._download_json(
-            'https://%s/youtubei/v1/%s' % (api_hostname or self._get_innertube_host(default_client), ep),
+            f'https://{self._select_api_hostname(api_hostname, default_client)}/youtubei/v1/{ep}',
             video_id=video_id, fatal=fatal, note=note, errnote=errnote,
             data=json.dumps(data).encode('utf8'), headers=real_headers,
-            query={'key': api_key or self._extract_api_key()})
+            query={'key': api_key, 'prettyPrint': 'false'})
 
     def extract_yt_initial_data(self, item_id, webpage, fatal=True):
-        data = self._search_regex(
-            (r'%s\s*%s' % (self._YT_INITIAL_DATA_RE, self._YT_INITIAL_BOUNDARY_RE),
-             self._YT_INITIAL_DATA_RE), webpage, 'yt initial data', fatal=fatal)
-        if data:
-            return self._parse_json(data, item_id, fatal=fatal)
+        return self._search_json(self._YT_INITIAL_DATA_RE, webpage, 'yt initial data', item_id, fatal=fatal)
 
     @staticmethod
     def _extract_session_index(*data):
@@ -482,7 +561,7 @@ def _extract_session_index(*data):
     # Deprecated?
     def _extract_identity_token(self, ytcfg=None, webpage=None):
         if ytcfg:
-            token = try_get(ytcfg, lambda x: x['ID_TOKEN'], compat_str)
+            token = try_get(ytcfg, lambda x: x['ID_TOKEN'], str)
             if token:
                 return token
         if webpage:
@@ -498,12 +577,12 @@ def _extract_account_syncid(*args):
         """
         for data in args:
             # ytcfg includes channel_syncid if on secondary channel
-            delegated_sid = try_get(data, lambda x: x['DELEGATED_SESSION_ID'], compat_str)
+            delegated_sid = try_get(data, lambda x: x['DELEGATED_SESSION_ID'], str)
             if delegated_sid:
                 return delegated_sid
             sync_ids = (try_get(
                 data, (lambda x: x['responseContext']['mainAppWebResponseContext']['datasyncId'],
-                       lambda x: x['DATASYNC_ID']), compat_str) or '').split('||')
+                       lambda x: x['DATASYNC_ID']), str) or '').split('||')
             if len(sync_ids) >= 2 and sync_ids[1]:
                 # datasyncid is of the form "channel_syncid||user_syncid" for secondary channel
                 # and just "user_syncid||" for primary channel. We only want the channel_syncid
@@ -519,7 +598,7 @@ def _extract_visitor_data(*args):
             args, [('VISITOR_DATA', ('INNERTUBE_CONTEXT', 'client', 'visitorData'), ('responseContext', 'visitorData'))],
             expected_type=str)
 
-    @property
+    @functools.cached_property
     def is_authenticated(self):
         return bool(self._generate_sapisidhash_header())
 
@@ -535,15 +614,16 @@ def generate_api_headers(
             self, *, ytcfg=None, account_syncid=None, session_index=None,
             visitor_data=None, identity_token=None, api_hostname=None, default_client='web'):
 
-        origin = 'https://' + (api_hostname if api_hostname else self._get_innertube_host(default_client))
+        origin = 'https://' + (self._select_api_hostname(api_hostname, default_client))
         headers = {
-            'X-YouTube-Client-Name': compat_str(
+            'X-YouTube-Client-Name': str(
                 self._ytcfg_get_safe(ytcfg, lambda x: x['INNERTUBE_CONTEXT_CLIENT_NAME'], default_client=default_client)),
             'X-YouTube-Client-Version': self._extract_client_version(ytcfg, default_client),
             'Origin': origin,
             'X-Youtube-Identity-Token': identity_token or self._extract_identity_token(ytcfg),
             'X-Goog-PageId': account_syncid or self._extract_account_syncid(ytcfg),
-            'X-Goog-Visitor-Id': visitor_data or self._extract_visitor_data(ytcfg)
+            'X-Goog-Visitor-Id': visitor_data or self._extract_visitor_data(ytcfg),
+            'User-Agent': self._ytcfg_get_safe(ytcfg, lambda x: x['INNERTUBE_CONTEXT']['client']['userAgent'], default_client=default_client)
         }
         if session_index is None:
             session_index = self._extract_session_index(ytcfg)
@@ -554,7 +634,19 @@ def generate_api_headers(
         if auth is not None:
             headers['Authorization'] = auth
             headers['X-Origin'] = origin
-        return {h: v for h, v in headers.items() if v is not None}
+        return filter_dict(headers)
+
+    def _download_ytcfg(self, client, video_id):
+        url = {
+            'web': 'https://www.youtube.com',
+            'web_music': 'https://music.youtube.com',
+            'web_embedded': f'https://www.youtube.com/embed/{video_id}?html5=1'
+        }.get(client)
+        if not url:
+            return {}
+        webpage = self._download_webpage(
+            url, video_id, fatal=False, note=f'Downloading {client.replace("_", " ").strip()} client config')
+        return self.extract_ytcfg(video_id, webpage) or {}
 
     @staticmethod
     def _build_api_continuation_query(continuation, ctp=None):
@@ -585,7 +677,7 @@ def _extract_next_continuation_data(cls, renderer):
     def _extract_continuation_ep_data(cls, continuation_ep: dict):
         if isinstance(continuation_ep, dict):
             continuation = try_get(
-                continuation_ep, lambda x: x['continuationCommand']['token'], compat_str)
+                continuation_ep, lambda x: x['continuationCommand']['token'], str)
             if not continuation:
                 return
             ctp = continuation_ep.get('clickTrackingParams')
@@ -597,20 +689,10 @@ def _extract_continuation(cls, renderer):
         if next_continuation:
             return next_continuation
 
-        contents = []
-        for key in ('contents', 'items'):
-            contents.extend(try_get(renderer, lambda x: x[key], list) or [])
-
-        for content in contents:
-            if not isinstance(content, dict):
-                continue
-            continuation_ep = try_get(
-                content, (lambda x: x['continuationItemRenderer']['continuationEndpoint'],
-                          lambda x: x['continuationItemRenderer']['button']['buttonRenderer']['command']),
-                dict)
-            continuation = cls._extract_continuation_ep_data(continuation_ep)
-            if continuation:
-                return continuation
+        return traverse_obj(renderer, (
+            ('contents', 'items', 'rows'), ..., 'continuationItemRenderer',
+            ('continuationEndpoint', ('button', 'buttonRenderer', 'command'))
+        ), get_all=False, expected_type=cls._extract_continuation_ep_data)
 
     @classmethod
     def _extract_alerts(cls, data):
@@ -626,16 +708,15 @@ def _extract_alerts(cls, data):
                     yield alert_type, message
 
     def _report_alerts(self, alerts, expected=True, fatal=True, only_once=False):
-        errors = []
-        warnings = []
+        errors, warnings = [], []
         for alert_type, alert_message in alerts:
             if alert_type.lower() == 'error' and fatal:
                 errors.append([alert_type, alert_message])
-            else:
+            elif alert_message not in self._IGNORED_WARNINGS:
                 warnings.append([alert_type, alert_message])
 
         for alert_type, alert_message in (warnings + errors[:-1]):
-            self.report_warning('YouTube said: %s - %s' % (alert_type, alert_message), only_once=only_once)
+            self.report_warning(f'YouTube said: {alert_type} - {alert_message}', only_once=only_once)
         if errors:
             raise ExtractorError('YouTube said: %s' % errors[-1][1], expected=expected)
 
@@ -643,13 +724,49 @@ def _extract_and_report_alerts(self, data, *args, **kwargs):
         return self._report_alerts(self._extract_alerts(data), *args, **kwargs)
 
     def _extract_badges(self, renderer: dict):
-        badges = set()
-        for badge in try_get(renderer, lambda x: x['badges'], list) or []:
-            label = try_get(badge, lambda x: x['metadataBadgeRenderer']['label'], compat_str)
-            if label:
-                badges.add(label.lower())
+        privacy_icon_map = {
+            'PRIVACY_UNLISTED': BadgeType.AVAILABILITY_UNLISTED,
+            'PRIVACY_PRIVATE': BadgeType.AVAILABILITY_PRIVATE,
+            'PRIVACY_PUBLIC': BadgeType.AVAILABILITY_PUBLIC
+        }
+
+        badge_style_map = {
+            'BADGE_STYLE_TYPE_MEMBERS_ONLY': BadgeType.AVAILABILITY_SUBSCRIPTION,
+            'BADGE_STYLE_TYPE_PREMIUM': BadgeType.AVAILABILITY_PREMIUM,
+            'BADGE_STYLE_TYPE_LIVE_NOW': BadgeType.LIVE_NOW
+        }
+
+        label_map = {
+            'unlisted': BadgeType.AVAILABILITY_UNLISTED,
+            'private': BadgeType.AVAILABILITY_PRIVATE,
+            'members only': BadgeType.AVAILABILITY_SUBSCRIPTION,
+            'live': BadgeType.LIVE_NOW,
+            'premium': BadgeType.AVAILABILITY_PREMIUM
+        }
+
+        badges = []
+        for badge in traverse_obj(renderer, ('badges', ..., 'metadataBadgeRenderer'), default=[]):
+            badge_type = (
+                privacy_icon_map.get(traverse_obj(badge, ('icon', 'iconType'), expected_type=str))
+                or badge_style_map.get(traverse_obj(badge, 'style'))
+            )
+            if badge_type:
+                badges.append({'type': badge_type})
+                continue
+
+            # fallback, won't work in some languages
+            label = traverse_obj(badge, 'label', expected_type=str, default='')
+            for match, label_badge_type in label_map.items():
+                if match in label.lower():
+                    badges.append({'type': badge_type})
+                    continue
+
         return badges
 
+    @staticmethod
+    def _has_badge(badges, badge_type):
+        return bool(traverse_obj(badges, lambda _, v: v['type'] == badge_type))
+
     @staticmethod
     def _get_text(data, *path_list, max_runs=None):
         for path in path_list or [None]:
@@ -660,7 +777,7 @@ def _get_text(data, *path_list, max_runs=None):
                 if not any(key is ... or isinstance(key, (list, tuple)) for key in variadic(path)):
                     obj = [obj]
             for item in obj:
-                text = try_get(item, lambda x: x['simpleText'], compat_str)
+                text = try_get(item, lambda x: x['simpleText'], str)
                 if text:
                     return text
                 runs = try_get(item, lambda x: x['runs'], list) or []
@@ -720,8 +837,9 @@ def extract_relative_time(relative_time_text):
             except ValueError:
                 return None
 
-    def _extract_time_text(self, renderer, *path_list):
-        text = self._get_text(renderer, *path_list) or ''
+    def _parse_time_text(self, text):
+        if not text:
+            return
         dt = self.extract_relative_time(text)
         timestamp = None
         if isinstance(dt, datetime.datetime):
@@ -731,84 +849,65 @@ def _extract_time_text(self, renderer, *path_list):
             timestamp = (
                 unified_timestamp(text) or unified_timestamp(
                     self._search_regex(
-                        (r'(?:.+|^)(?:live|premieres|ed|ing)(?:\s*on)?\s*(.+\d)', r'\w+[\s,\.-]*\w+[\s,\.-]+20\d{2}'),
+                        (r'([a-z]+\s*\d{1,2},?\s*20\d{2})', r'(?:.+|^)(?:live|premieres|ed|ing)(?:\s*(?:on|for))?\s*(.+\d)'),
                         text.lower(), 'time text', default=None)))
 
-        if text and timestamp is None:
-            self.report_warning('Cannot parse localized time text' + bug_reports_message(), only_once=True)
-        return timestamp, text
+        if text and timestamp is None and self._preferred_lang in (None, 'en'):
+            self.report_warning(
+                f'Cannot parse localized time text "{text}"', only_once=True)
+        return timestamp
 
     def _extract_response(self, item_id, query, note='Downloading API JSON', headers=None,
                           ytcfg=None, check_get_keys=None, ep='browse', fatal=True, api_hostname=None,
                           default_client='web'):
-        response = None
-        last_error = None
-        count = -1
-        retries = self.get_param('extractor_retries', 3)
-        if check_get_keys is None:
-            check_get_keys = []
-        while count < retries:
-            count += 1
-            if last_error:
-                self.report_warning('%s. Retrying ...' % remove_end(last_error, '.'))
+        for retry in self.RetryManager():
             try:
                 response = self._call_api(
                     ep=ep, fatal=True, headers=headers,
-                    video_id=item_id, query=query,
+                    video_id=item_id, query=query, note=note,
                     context=self._extract_context(ytcfg, default_client),
                     api_key=self._extract_api_key(ytcfg, default_client),
-                    api_hostname=api_hostname, default_client=default_client,
-                    note='%s%s' % (note, ' (retry #%d)' % count if count else ''))
+                    api_hostname=api_hostname, default_client=default_client)
             except ExtractorError as e:
-                if isinstance(e.cause, network_exceptions):
-                    if isinstance(e.cause, compat_HTTPError):
-                        first_bytes = e.cause.read(512)
-                        if not is_html(first_bytes):
-                            yt_error = try_get(
-                                self._parse_json(
-                                    self._webpage_read_content(e.cause, None, item_id, prefix=first_bytes) or '{}', item_id, fatal=False),
-                                lambda x: x['error']['message'], compat_str)
-                            if yt_error:
-                                self._report_alerts([('ERROR', yt_error)], fatal=False)
-                    # Downloading page may result in intermittent 5xx HTTP error
-                    # Sometimes a 404 is also recieved. See: https://github.com/ytdl-org/youtube-dl/issues/28289
-                    # We also want to catch all other network exceptions since errors in later pages can be troublesome
-                    # See https://github.com/yt-dlp/yt-dlp/issues/507#issuecomment-880188210
-                    if not isinstance(e.cause, compat_HTTPError) or e.cause.code not in (403, 429):
-                        last_error = error_to_compat_str(e.cause or e.msg)
-                        if count < retries:
-                            continue
-                if fatal:
-                    raise
-                else:
-                    self.report_warning(error_to_compat_str(e))
-                    return
+                if not isinstance(e.cause, network_exceptions):
+                    return self._error_or_warning(e, fatal=fatal)
+                elif not isinstance(e.cause, urllib.error.HTTPError):
+                    retry.error = e
+                    continue
 
-            else:
-                try:
-                    self._extract_and_report_alerts(response, only_once=True)
-                except ExtractorError as e:
-                    # YouTube servers may return errors we want to retry on in a 200 OK response
-                    # See: https://github.com/yt-dlp/yt-dlp/issues/839
-                    if 'unknown error' in e.msg.lower():
-                        last_error = e.msg
-                        continue
-                    if fatal:
-                        raise
-                    self.report_warning(error_to_compat_str(e))
-                    return
-                if not check_get_keys or dict_get(response, check_get_keys):
-                    break
-                # Youtube sometimes sends incomplete data
-                # See: https://github.com/ytdl-org/youtube-dl/issues/28194
-                last_error = 'Incomplete data received'
-                if count >= retries:
-                    if fatal:
-                        raise ExtractorError(last_error)
-                    else:
-                        self.report_warning(last_error)
-                        return
-        return response
+                first_bytes = e.cause.read(512)
+                if not is_html(first_bytes):
+                    yt_error = try_get(
+                        self._parse_json(
+                            self._webpage_read_content(e.cause, None, item_id, prefix=first_bytes) or '{}', item_id, fatal=False),
+                        lambda x: x['error']['message'], str)
+                    if yt_error:
+                        self._report_alerts([('ERROR', yt_error)], fatal=False)
+                # Downloading page may result in intermittent 5xx HTTP error
+                # Sometimes a 404 is also recieved. See: https://github.com/ytdl-org/youtube-dl/issues/28289
+                # We also want to catch all other network exceptions since errors in later pages can be troublesome
+                # See https://github.com/yt-dlp/yt-dlp/issues/507#issuecomment-880188210
+                if e.cause.code not in (403, 429):
+                    retry.error = e
+                    continue
+                return self._error_or_warning(e, fatal=fatal)
+
+            try:
+                self._extract_and_report_alerts(response, only_once=True)
+            except ExtractorError as e:
+                # YouTube servers may return errors we want to retry on in a 200 OK response
+                # See: https://github.com/yt-dlp/yt-dlp/issues/839
+                if 'unknown error' in e.msg.lower():
+                    retry.error = e
+                    continue
+                return self._error_or_warning(e, fatal=fatal)
+            # Youtube sometimes sends incomplete data
+            # See: https://github.com/ytdl-org/youtube-dl/issues/28194
+            if not traverse_obj(response, *variadic(check_get_keys)):
+                retry.error = ExtractorError('Incomplete data received', expected=True)
+                continue
+
+            return response
 
     @staticmethod
     def is_music_url(url):
@@ -816,41 +915,85 @@ def is_music_url(url):
 
     def _extract_video(self, renderer):
         video_id = renderer.get('videoId')
-        title = self._get_text(renderer, 'title')
+
+        reel_header_renderer = traverse_obj(renderer, (
+            'navigationEndpoint', 'reelWatchEndpoint', 'overlay', 'reelPlayerOverlayRenderer',
+            'reelPlayerHeaderSupportedRenderers', 'reelPlayerHeaderRenderer'))
+
+        title = self._get_text(renderer, 'title', 'headline') or self._get_text(reel_header_renderer, 'reelTitleText')
         description = self._get_text(renderer, 'descriptionSnippet')
-        duration = parse_duration(self._get_text(
-            renderer, 'lengthText', ('thumbnailOverlays', ..., 'thumbnailOverlayTimeStatusRenderer', 'text')))
-        view_count = self._get_count(renderer, 'viewCountText')
 
-        uploader = self._get_text(renderer, 'ownerText', 'shortBylineText')
+        duration = int_or_none(renderer.get('lengthSeconds'))
+        if duration is None:
+            duration = parse_duration(self._get_text(
+                renderer, 'lengthText', ('thumbnailOverlays', ..., 'thumbnailOverlayTimeStatusRenderer', 'text')))
+        if duration is None:
+            # XXX: should write a parser to be more general to support more cases (e.g. shorts in shorts tab)
+            duration = parse_duration(self._search_regex(
+                r'(?i)(ago)(?!.*\1)\s+(?P<duration>[a-z0-9 ,]+?)(?:\s+[\d,]+\s+views)?(?:\s+-\s+play\s+short)?$',
+                traverse_obj(renderer, ('title', 'accessibility', 'accessibilityData', 'label'), default='', expected_type=str),
+                video_id, default=None, group='duration'))
+
         channel_id = traverse_obj(
-            renderer, ('shortBylineText', 'runs', ..., 'navigationEndpoint', 'browseEndpoint', 'browseId'), expected_type=str, get_all=False)
-        timestamp, time_text = self._extract_time_text(renderer, 'publishedTimeText')
-        scheduled_timestamp = str_to_int(traverse_obj(renderer, ('upcomingEventData', 'startTime'), get_all=False))
+            renderer, ('shortBylineText', 'runs', ..., 'navigationEndpoint', 'browseEndpoint', 'browseId'),
+            expected_type=str, get_all=False)
+        if not channel_id:
+            channel_id = traverse_obj(reel_header_renderer, ('channelNavigationEndpoint', 'browseEndpoint', 'browseId'))
+
         overlay_style = traverse_obj(
-            renderer, ('thumbnailOverlays', ..., 'thumbnailOverlayTimeStatusRenderer', 'style'), get_all=False, expected_type=str)
+            renderer, ('thumbnailOverlays', ..., 'thumbnailOverlayTimeStatusRenderer', 'style'),
+            get_all=False, expected_type=str)
         badges = self._extract_badges(renderer)
-        thumbnails = self._extract_thumbnails(renderer, 'thumbnail')
+
+        navigation_url = urljoin('https://www.youtube.com/', traverse_obj(
+            renderer, ('navigationEndpoint', 'commandMetadata', 'webCommandMetadata', 'url'),
+            expected_type=str)) or ''
+        url = f'https://www.youtube.com/watch?v={video_id}'
+        if overlay_style == 'SHORTS' or '/shorts/' in navigation_url:
+            url = f'https://www.youtube.com/shorts/{video_id}'
+
+        time_text = (self._get_text(renderer, 'publishedTimeText', 'videoInfo')
+                     or self._get_text(reel_header_renderer, 'timestampText') or '')
+        scheduled_timestamp = str_to_int(traverse_obj(renderer, ('upcomingEventData', 'startTime'), get_all=False))
+
+        live_status = (
+            'is_upcoming' if scheduled_timestamp is not None
+            else 'was_live' if 'streamed' in time_text.lower()
+            else 'is_live' if overlay_style == 'LIVE' or self._has_badge(badges, BadgeType.LIVE_NOW)
+            else None)
+
+        # videoInfo is a string like '50K views • 10 years ago'.
+        view_count_text = self._get_text(renderer, 'viewCountText', 'shortViewCountText', 'videoInfo') or ''
+        view_count = (0 if 'no views' in view_count_text.lower()
+                      else self._get_count({'simpleText': view_count_text}))
+        view_count_field = 'concurrent_view_count' if live_status in ('is_live', 'is_upcoming') else 'view_count'
 
         return {
             '_type': 'url',
             'ie_key': YoutubeIE.ie_key(),
             'id': video_id,
-            'url': f'https://www.youtube.com/watch?v={video_id}',
+            'url': url,
             'title': title,
             'description': description,
             'duration': duration,
-            'view_count': view_count,
-            'uploader': uploader,
             'channel_id': channel_id,
-            'thumbnails': thumbnails,
-            'upload_date': strftime_or_none(timestamp, '%Y%m%d') if self._configuration_arg('approximate_date', ie_key='youtubetab') else None,
-            'live_status': ('is_upcoming' if scheduled_timestamp is not None
-                            else 'was_live' if 'streamed' in time_text.lower()
-                            else 'is_live' if overlay_style is not None and overlay_style == 'LIVE' or 'live now' in badges
-                            else None),
+            'channel': (self._get_text(renderer, 'ownerText', 'shortBylineText')
+                        or self._get_text(reel_header_renderer, 'channelTitleText')),
+            'channel_url': f'https://www.youtube.com/channel/{channel_id}' if channel_id else None,
+            'thumbnails': self._extract_thumbnails(renderer, 'thumbnail'),
+            'timestamp': (self._parse_time_text(time_text)
+                          if self._configuration_arg('approximate_date', ie_key=YoutubeTabIE)
+                          else None),
             'release_timestamp': scheduled_timestamp,
-            'availability': self._availability(needs_premium='premium' in badges, needs_subscription='members only' in badges)
+            'availability':
+                'public' if self._has_badge(badges, BadgeType.AVAILABILITY_PUBLIC)
+                else self._availability(
+                    is_private=self._has_badge(badges, BadgeType.AVAILABILITY_PRIVATE) or None,
+                    needs_premium=self._has_badge(badges, BadgeType.AVAILABILITY_PREMIUM) or None,
+                    needs_subscription=self._has_badge(badges, BadgeType.AVAILABILITY_SUBSCRIPTION) or None,
+                    is_unlisted=self._has_badge(badges, BadgeType.AVAILABILITY_UNLISTED) or None),
+            view_count_field: view_count,
+            'live_status': live_status
         }
 
 
@@ -891,6 +1034,27 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                      (?:\#|$)""" % {
         'invidious': '|'.join(YoutubeBaseInfoExtractor._INVIDIOUS_SITES),
     }
+    _EMBED_REGEX = [
+        r'''(?x)
+            (?:
+                <(?:[0-9A-Za-z-]+?)?iframe[^>]+?src=|
+                data-video-url=|
+                <embed[^>]+?src=|
+                embedSWF\(?:\s*|
+                <object[^>]+data=|
+                new\s+SWFObject\(
+            )
+            (["\'])
+                (?P<url>(?:https?:)?//(?:www\.)?youtube(?:-nocookie)?\.com/
+                (?:embed|v|p)/[0-9A-Za-z_-]{11}.*?)
+            \1''',
+        # https://wordpress.org/plugins/lazy-load-for-videos/
+        r'''(?xs)
+            <a\s[^>]*\bhref="(?P<url>https://www\.youtube\.com/watch\?v=[0-9A-Za-z_-]{11})"
+            \s[^>]*\bclass="[^"]*\blazy-load-youtube''',
+    ]
+    _RETURN_TYPE = 'video'  # XXX: How to handle multifeed?
+
     _PLAYER_INFO_RE = (
         r'/s/player/(?P<id>[a-zA-Z0-9_-]{8,})/player',
         r'/(?P<id>[a-zA-Z0-9_-]{8,})/player(?:_ias\.vflset(?:/[a-zA-Z]{2,3}_[a-zA-Z]{2,3})?|-plasma-ias-(?:phone|tablet)-[a-z]{2}_[A-Z]{2}\.vflset)/base\.js$',
@@ -1037,6 +1201,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 'age_limit': 0,
                 'start_time': 1,
                 'end_time': 9,
+                'comment_count': int,
                 'channel_follower_count': int
             }
         },
@@ -1081,6 +1246,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 'thumbnail': 'https://i.ytimg.com/vi/BaW_jenozKc/maxresdefault.jpg',
                 'live_status': 'not_live',
                 'age_limit': 0,
+                'comment_count': int,
                 'channel_follower_count': int
             },
             'params': {
@@ -1205,7 +1371,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 'id': 'Tq92D6wQ1mg',
                 'title': '[MMD] Adios - EVERGLOW [+Motion DL]',
                 'ext': 'mp4',
-                'upload_date': '20191227',
+                'upload_date': '20191228',
                 'uploader_id': 'UC1yoRdFoFJaCY-AGfD9W0wQ',
                 'uploader': 'Projekt Melody',
                 'description': 'md5:17eccca93a786d51bc67646756894066',
@@ -1223,6 +1389,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 'categories': ['Entertainment'],
                 'duration': 106,
                 'channel_url': 'https://www.youtube.com/channel/UC1yoRdFoFJaCY-AGfD9W0wQ',
+                'comment_count': int,
                 'channel_follower_count': int
             },
         },
@@ -1310,7 +1477,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 'upload_date': '20150827',
                 'uploader_id': 'olympic',
                 'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/olympic',
-                'description': 'HO09  - Women -  GER-AUS - Hockey - 31 July 2012 - London 2012 Olympic Games',
+                'description': 'md5:04bbbf3ccceb6795947572ca36f45904',
                 'uploader': 'Olympics',
                 'title': 'Hockey - Women -  GER-AUS - London 2012 Olympic Games',
                 'like_count': int,
@@ -1359,6 +1526,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 'like_count': int,
                 'live_status': 'not_live',
                 'availability': 'unlisted',
+                'comment_count': int,
                 'channel_follower_count': int
             },
         },
@@ -1416,66 +1584,99 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
             'skip': 'This live event has ended.',
         },
         {
-            # Multifeed videos (multiple cameras), URL is for Main Camera
-            'url': 'https://www.youtube.com/watch?v=jvGDaLqkpTg',
+            # Multifeed videos (multiple cameras), URL can be of any Camera
+            'url': 'https://www.youtube.com/watch?v=zaPI8MvL8pg',
             'info_dict': {
-                'id': 'jvGDaLqkpTg',
-                'title': 'Tom Clancy Free Weekend Rainbow Whatever',
-                'description': 'md5:e03b909557865076822aa169218d6a5d',
+                'id': 'zaPI8MvL8pg',
+                'title': 'Terraria 1.2 Live Stream | Let\'s Play - Part 04',
+                'description': 'md5:563ccbc698b39298481ca3c571169519',
             },
             'playlist': [{
                 'info_dict': {
-                    'id': 'jvGDaLqkpTg',
-                    'ext': 'mp4',
-                    'title': 'Tom Clancy Free Weekend Rainbow Whatever (Main Camera)',
-                    'description': 'md5:e03b909557865076822aa169218d6a5d',
-                    'duration': 10643,
-                    'upload_date': '20161111',
-                    'uploader': 'Team PGP',
-                    'uploader_id': 'UChORY56LMMETTuGjXaJXvLg',
-                    'uploader_url': r're:https?://(?:www\.)?youtube\.com/channel/UChORY56LMMETTuGjXaJXvLg',
-                },
-            }, {
-                'info_dict': {
-                    'id': '3AKt1R1aDnw',
+                    'id': 'j5yGuxZ8lLU',
                     'ext': 'mp4',
-                    'title': 'Tom Clancy Free Weekend Rainbow Whatever (Camera 2)',
-                    'description': 'md5:e03b909557865076822aa169218d6a5d',
-                    'duration': 10991,
-                    'upload_date': '20161111',
-                    'uploader': 'Team PGP',
-                    'uploader_id': 'UChORY56LMMETTuGjXaJXvLg',
-                    'uploader_url': r're:https?://(?:www\.)?youtube\.com/channel/UChORY56LMMETTuGjXaJXvLg',
+                    'title': 'Terraria 1.2 Live Stream | Let\'s Play - Part 04 (Chris)',
+                    'uploader': 'WiiLikeToPlay',
+                    'description': 'md5:563ccbc698b39298481ca3c571169519',
+                    'uploader_url': 'http://www.youtube.com/user/WiiRikeToPray',
+                    'duration': 10120,
+                    'channel_follower_count': int,
+                    'channel_url': 'https://www.youtube.com/channel/UCN2XePorRokPB9TEgRZpddg',
+                    'availability': 'public',
+                    'playable_in_embed': True,
+                    'upload_date': '20131105',
+                    'uploader_id': 'WiiRikeToPray',
+                    'categories': ['Gaming'],
+                    'live_status': 'was_live',
+                    'tags': 'count:24',
+                    'release_timestamp': 1383701910,
+                    'thumbnail': 'https://i.ytimg.com/vi/j5yGuxZ8lLU/maxresdefault.jpg',
+                    'comment_count': int,
+                    'age_limit': 0,
+                    'like_count': int,
+                    'channel_id': 'UCN2XePorRokPB9TEgRZpddg',
+                    'channel': 'WiiLikeToPlay',
+                    'view_count': int,
+                    'release_date': '20131106',
                 },
             }, {
                 'info_dict': {
-                    'id': 'RtAMM00gpVc',
+                    'id': 'zaPI8MvL8pg',
                     'ext': 'mp4',
-                    'title': 'Tom Clancy Free Weekend Rainbow Whatever (Camera 3)',
-                    'description': 'md5:e03b909557865076822aa169218d6a5d',
-                    'duration': 10995,
-                    'upload_date': '20161111',
-                    'uploader': 'Team PGP',
-                    'uploader_id': 'UChORY56LMMETTuGjXaJXvLg',
-                    'uploader_url': r're:https?://(?:www\.)?youtube\.com/channel/UChORY56LMMETTuGjXaJXvLg',
+                    'title': 'Terraria 1.2 Live Stream | Let\'s Play - Part 04 (Tyson)',
+                    'uploader_id': 'WiiRikeToPray',
+                    'availability': 'public',
+                    'channel_url': 'https://www.youtube.com/channel/UCN2XePorRokPB9TEgRZpddg',
+                    'channel': 'WiiLikeToPlay',
+                    'uploader_url': 'http://www.youtube.com/user/WiiRikeToPray',
+                    'channel_follower_count': int,
+                    'description': 'md5:563ccbc698b39298481ca3c571169519',
+                    'duration': 10108,
+                    'age_limit': 0,
+                    'like_count': int,
+                    'tags': 'count:24',
+                    'channel_id': 'UCN2XePorRokPB9TEgRZpddg',
+                    'uploader': 'WiiLikeToPlay',
+                    'release_timestamp': 1383701915,
+                    'comment_count': int,
+                    'upload_date': '20131105',
+                    'thumbnail': 'https://i.ytimg.com/vi/zaPI8MvL8pg/maxresdefault.jpg',
+                    'release_date': '20131106',
+                    'playable_in_embed': True,
+                    'live_status': 'was_live',
+                    'categories': ['Gaming'],
+                    'view_count': int,
                 },
             }, {
                 'info_dict': {
-                    'id': '6N2fdlP3C5U',
+                    'id': 'R7r3vfO7Hao',
                     'ext': 'mp4',
-                    'title': 'Tom Clancy Free Weekend Rainbow Whatever (Camera 4)',
-                    'description': 'md5:e03b909557865076822aa169218d6a5d',
-                    'duration': 10990,
-                    'upload_date': '20161111',
-                    'uploader': 'Team PGP',
-                    'uploader_id': 'UChORY56LMMETTuGjXaJXvLg',
-                    'uploader_url': r're:https?://(?:www\.)?youtube\.com/channel/UChORY56LMMETTuGjXaJXvLg',
+                    'title': 'Terraria 1.2 Live Stream | Let\'s Play - Part 04 (Spencer)',
+                    'thumbnail': 'https://i.ytimg.com/vi/R7r3vfO7Hao/maxresdefault.jpg',
+                    'channel_id': 'UCN2XePorRokPB9TEgRZpddg',
+                    'like_count': int,
+                    'availability': 'public',
+                    'playable_in_embed': True,
+                    'upload_date': '20131105',
+                    'description': 'md5:563ccbc698b39298481ca3c571169519',
+                    'uploader_id': 'WiiRikeToPray',
+                    'uploader_url': 'http://www.youtube.com/user/WiiRikeToPray',
+                    'channel_follower_count': int,
+                    'tags': 'count:24',
+                    'release_date': '20131106',
+                    'uploader': 'WiiLikeToPlay',
+                    'comment_count': int,
+                    'channel_url': 'https://www.youtube.com/channel/UCN2XePorRokPB9TEgRZpddg',
+                    'channel': 'WiiLikeToPlay',
+                    'categories': ['Gaming'],
+                    'release_timestamp': 1383701914,
+                    'live_status': 'was_live',
+                    'age_limit': 0,
+                    'duration': 10128,
+                    'view_count': int,
                 },
             }],
-            'params': {
-                'skip_download': True,
-            },
-            'skip': 'Not multifeed anymore',
+            'params': {'skip_download': True},
         },
         {
             # Multifeed video with comma in title (see https://github.com/ytdl-org/youtube-dl/issues/8536)
@@ -1570,7 +1771,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 'title': 'md5:e41008789470fc2533a3252216f1c1d1',
                 'description': 'md5:a677553cf0840649b731a3024aeff4cc',
                 'duration': 721,
-                'upload_date': '20150127',
+                'upload_date': '20150128',
                 'uploader_id': 'BerkmanCenter',
                 'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/BerkmanCenter',
                 'uploader': 'The Berkman Klein Center for Internet & Society',
@@ -1587,7 +1788,9 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 'thumbnail': 'https://i.ytimg.com/vi_webp/M4gD1WSo5mA/maxresdefault.webp',
                 'live_status': 'not_live',
                 'playable_in_embed': True,
-                'channel_follower_count': int
+                'comment_count': int,
+                'channel_follower_count': int,
+                'chapters': list,
             },
             'params': {
                 'skip_download': True,
@@ -1602,7 +1805,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 'title': 'Democratic Socialism and Foreign Policy | Bernie Sanders',
                 'description': 'md5:13a2503d7b5904ef4b223aa101628f39',
                 'duration': 4060,
-                'upload_date': '20151119',
+                'upload_date': '20151120',
                 'uploader': 'Bernie Sanders',
                 'uploader_id': 'UCH1dpzjCEiGAt8CXkryhkZg',
                 'uploader_url': r're:https?://(?:www\.)?youtube\.com/channel/UCH1dpzjCEiGAt8CXkryhkZg',
@@ -1619,7 +1822,9 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 'view_count': int,
                 'live_status': 'not_live',
                 'channel_url': 'https://www.youtube.com/channel/UCH1dpzjCEiGAt8CXkryhkZg',
-                'channel_follower_count': int
+                'comment_count': int,
+                'channel_follower_count': int,
+                'chapters': list,
             },
             'params': {
                 'skip_download': True,
@@ -1883,7 +2088,9 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 'view_count': int,
                 'duration': 522,
                 'channel': 'kudvenkat',
-                'channel_follower_count': int
+                'comment_count': int,
+                'channel_follower_count': int,
+                'chapters': list,
             },
             'params': {
                 'skip_download': True,
@@ -2033,7 +2240,8 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 'like_count': int,
                 'live_status': 'not_live',
                 'playable_in_embed': True,
-                'channel_follower_count': int
+                'channel_follower_count': int,
+                'chapters': list,
             },
             'params': {
                 'format': '17',  # 3gp format available on android
@@ -2077,29 +2285,349 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 'duration': 248,
                 'categories': ['Education'],
                 'age_limit': 0,
-                'channel_follower_count': int
+                'channel_follower_count': int,
+                'chapters': list,
             }, 'params': {'format': 'mhtml', 'skip_download': True}
+        }, {
+            # Ensure video upload_date is in UTC timezone (video was uploaded 1641170939)
+            'url': 'https://www.youtube.com/watch?v=2NUZ8W2llS4',
+            'info_dict': {
+                'id': '2NUZ8W2llS4',
+                'ext': 'mp4',
+                'title': 'The NP that test your phone performance 🙂',
+                'description': 'md5:144494b24d4f9dfacb97c1bbef5de84d',
+                'uploader': 'Leon Nguyen',
+                'uploader_id': 'VNSXIII',
+                'uploader_url': 'http://www.youtube.com/user/VNSXIII',
+                'channel_id': 'UCRqNBSOHgilHfAczlUmlWHA',
+                'channel_url': 'https://www.youtube.com/channel/UCRqNBSOHgilHfAczlUmlWHA',
+                'duration': 21,
+                'view_count': int,
+                'age_limit': 0,
+                'categories': ['Gaming'],
+                'tags': 'count:23',
+                'playable_in_embed': True,
+                'live_status': 'not_live',
+                'upload_date': '20220103',
+                'like_count': int,
+                'availability': 'public',
+                'channel': 'Leon Nguyen',
+                'thumbnail': 'https://i.ytimg.com/vi_webp/2NUZ8W2llS4/maxresdefault.webp',
+                'comment_count': int,
+                'channel_follower_count': int
+            }
+        }, {
+            # Same video as above, but with --compat-opt no-youtube-prefer-utc-upload-date
+            'url': 'https://www.youtube.com/watch?v=2NUZ8W2llS4',
+            'info_dict': {
+                'id': '2NUZ8W2llS4',
+                'ext': 'mp4',
+                'title': 'The NP that test your phone performance 🙂',
+                'description': 'md5:144494b24d4f9dfacb97c1bbef5de84d',
+                'uploader': 'Leon Nguyen',
+                'uploader_id': 'VNSXIII',
+                'uploader_url': 'http://www.youtube.com/user/VNSXIII',
+                'channel_id': 'UCRqNBSOHgilHfAczlUmlWHA',
+                'channel_url': 'https://www.youtube.com/channel/UCRqNBSOHgilHfAczlUmlWHA',
+                'duration': 21,
+                'view_count': int,
+                'age_limit': 0,
+                'categories': ['Gaming'],
+                'tags': 'count:23',
+                'playable_in_embed': True,
+                'live_status': 'not_live',
+                'upload_date': '20220102',
+                'like_count': int,
+                'availability': 'public',
+                'channel': 'Leon Nguyen',
+                'thumbnail': 'https://i.ytimg.com/vi_webp/2NUZ8W2llS4/maxresdefault.webp',
+                'comment_count': int,
+                'channel_follower_count': int
+            },
+            'params': {'compat_opts': ['no-youtube-prefer-utc-upload-date']}
+        }, {
+            # date text is premiered video, ensure upload date in UTC (published 1641172509)
+            'url': 'https://www.youtube.com/watch?v=mzZzzBU6lrM',
+            'info_dict': {
+                'id': 'mzZzzBU6lrM',
+                'ext': 'mp4',
+                'title': 'I Met GeorgeNotFound In Real Life...',
+                'description': 'md5:cca98a355c7184e750f711f3a1b22c84',
+                'uploader': 'Quackity',
+                'uploader_id': 'QuackityHQ',
+                'uploader_url': 'http://www.youtube.com/user/QuackityHQ',
+                'channel_id': 'UC_8NknAFiyhOUaZqHR3lq3Q',
+                'channel_url': 'https://www.youtube.com/channel/UC_8NknAFiyhOUaZqHR3lq3Q',
+                'duration': 955,
+                'view_count': int,
+                'age_limit': 0,
+                'categories': ['Entertainment'],
+                'tags': 'count:26',
+                'playable_in_embed': True,
+                'live_status': 'not_live',
+                'release_timestamp': 1641172509,
+                'release_date': '20220103',
+                'upload_date': '20220103',
+                'like_count': int,
+                'availability': 'public',
+                'channel': 'Quackity',
+                'thumbnail': 'https://i.ytimg.com/vi/mzZzzBU6lrM/maxresdefault.jpg',
+                'channel_follower_count': int
+            }
+        },
+        {   # continuous livestream. Microformat upload date should be preferred.
+            # Upload date was 2021-06-19 (not UTC), while stream start is 2021-11-27
+            'url': 'https://www.youtube.com/watch?v=kgx4WGK0oNU',
+            'info_dict': {
+                'id': 'kgx4WGK0oNU',
+                'title': r're:jazz\/lofi hip hop radio🌱chill beats to relax\/study to \[LIVE 24\/7\] \d{4}-\d{2}-\d{2} \d{2}:\d{2}',
+                'ext': 'mp4',
+                'channel_id': 'UC84whx2xxsiA1gXHXXqKGOA',
+                'availability': 'public',
+                'age_limit': 0,
+                'release_timestamp': 1637975704,
+                'upload_date': '20210619',
+                'channel_url': 'https://www.youtube.com/channel/UC84whx2xxsiA1gXHXXqKGOA',
+                'live_status': 'is_live',
+                'thumbnail': 'https://i.ytimg.com/vi/kgx4WGK0oNU/maxresdefault.jpg',
+                'uploader': '阿鲍Abao',
+                'uploader_url': 'http://www.youtube.com/channel/UC84whx2xxsiA1gXHXXqKGOA',
+                'channel': 'Abao in Tokyo',
+                'channel_follower_count': int,
+                'release_date': '20211127',
+                'tags': 'count:39',
+                'categories': ['People & Blogs'],
+                'like_count': int,
+                'uploader_id': 'UC84whx2xxsiA1gXHXXqKGOA',
+                'view_count': int,
+                'playable_in_embed': True,
+                'description': 'md5:2ef1d002cad520f65825346e2084e49d',
+                'concurrent_view_count': int,
+            },
+            'params': {'skip_download': True}
+        }, {
+            # Story. Requires specific player params to work.
+            'url': 'https://www.youtube.com/watch?v=vv8qTUWmulI',
+            'info_dict': {
+                'id': 'vv8qTUWmulI',
+                'ext': 'mp4',
+                'availability': 'unlisted',
+                'view_count': int,
+                'channel_id': 'UCzIZ8HrzDgc-pNQDUG6avBA',
+                'upload_date': '20220526',
+                'categories': ['Education'],
+                'title': 'Story',
+                'channel': 'IT\'S HISTORY',
+                'description': '',
+                'uploader_id': 'BlastfromthePast',
+                'duration': 12,
+                'uploader': 'IT\'S HISTORY',
+                'playable_in_embed': True,
+                'age_limit': 0,
+                'live_status': 'not_live',
+                'tags': [],
+                'thumbnail': 'https://i.ytimg.com/vi_webp/vv8qTUWmulI/maxresdefault.webp',
+                'uploader_url': 'http://www.youtube.com/user/BlastfromthePast',
+                'channel_url': 'https://www.youtube.com/channel/UCzIZ8HrzDgc-pNQDUG6avBA',
+            },
+            'skip': 'stories get removed after some period of time',
+        }, {
+            'url': 'https://www.youtube.com/watch?v=tjjjtzRLHvA',
+            'info_dict': {
+                'id': 'tjjjtzRLHvA',
+                'ext': 'mp4',
+                'title': 'ハッシュタグ無し };if window.ytcsi',
+                'upload_date': '20220323',
+                'like_count': int,
+                'availability': 'unlisted',
+                'channel': 'nao20010128nao',
+                'thumbnail': 'https://i.ytimg.com/vi_webp/tjjjtzRLHvA/maxresdefault.webp',
+                'age_limit': 0,
+                'uploader': 'nao20010128nao',
+                'uploader_id': 'nao20010128nao',
+                'categories': ['Music'],
+                'view_count': int,
+                'description': '',
+                'channel_url': 'https://www.youtube.com/channel/UCdqltm_7iv1Vs6kp6Syke5A',
+                'channel_id': 'UCdqltm_7iv1Vs6kp6Syke5A',
+                'live_status': 'not_live',
+                'playable_in_embed': True,
+                'channel_follower_count': int,
+                'duration': 6,
+                'tags': [],
+                'uploader_url': 'http://www.youtube.com/user/nao20010128nao',
+            }
+        }, {
+            # Prefer primary title+description language metadata by default
+            # Do not prefer translated description if primary is empty
+            'url': 'https://www.youtube.com/watch?v=el3E4MbxRqQ',
+            'info_dict': {
+                'id': 'el3E4MbxRqQ',
+                'ext': 'mp4',
+                'title': 'dlp test video 2 - primary sv no desc',
+                'description': '',
+                'channel': 'cole-dlp-test-acc',
+                'tags': [],
+                'view_count': int,
+                'channel_url': 'https://www.youtube.com/channel/UCiu-3thuViMebBjw_5nWYrA',
+                'like_count': int,
+                'playable_in_embed': True,
+                'availability': 'unlisted',
+                'thumbnail': 'https://i.ytimg.com/vi_webp/el3E4MbxRqQ/maxresdefault.webp',
+                'age_limit': 0,
+                'duration': 5,
+                'uploader_id': 'UCiu-3thuViMebBjw_5nWYrA',
+                'uploader_url': 'http://www.youtube.com/channel/UCiu-3thuViMebBjw_5nWYrA',
+                'live_status': 'not_live',
+                'upload_date': '20220908',
+                'categories': ['People & Blogs'],
+                'uploader': 'cole-dlp-test-acc',
+                'channel_id': 'UCiu-3thuViMebBjw_5nWYrA',
+            },
+            'params': {'skip_download': True}
+        }, {
+            # Extractor argument: prefer translated title+description
+            'url': 'https://www.youtube.com/watch?v=gHKT4uU8Zng',
+            'info_dict': {
+                'id': 'gHKT4uU8Zng',
+                'ext': 'mp4',
+                'channel': 'cole-dlp-test-acc',
+                'tags': [],
+                'duration': 5,
+                'live_status': 'not_live',
+                'channel_id': 'UCiu-3thuViMebBjw_5nWYrA',
+                'upload_date': '20220728',
+                'uploader_id': 'UCiu-3thuViMebBjw_5nWYrA',
+                'view_count': int,
+                'categories': ['People & Blogs'],
+                'thumbnail': 'https://i.ytimg.com/vi_webp/gHKT4uU8Zng/maxresdefault.webp',
+                'title': 'dlp test video title translated (fr)',
+                'availability': 'public',
+                'uploader': 'cole-dlp-test-acc',
+                'age_limit': 0,
+                'description': 'dlp test video description translated (fr)',
+                'playable_in_embed': True,
+                'channel_url': 'https://www.youtube.com/channel/UCiu-3thuViMebBjw_5nWYrA',
+                'uploader_url': 'http://www.youtube.com/channel/UCiu-3thuViMebBjw_5nWYrA',
+            },
+            'params': {'skip_download': True, 'extractor_args': {'youtube': {'lang': ['fr']}}},
+            'expected_warnings': [r'Preferring "fr" translated fields'],
+        }, {
+            'note': '6 channel audio',
+            'url': 'https://www.youtube.com/watch?v=zgdo7-RRjgo',
+            'only_matching': True,
+        }, {
+            'note': 'Multiple HLS formats with same itag',
+            'url': 'https://www.youtube.com/watch?v=kX3nB4PpJko',
+            'info_dict': {
+                'id': 'kX3nB4PpJko',
+                'ext': 'mp4',
+                'categories': ['Entertainment'],
+                'description': 'md5:e8031ff6e426cdb6a77670c9b81f6fa6',
+                'uploader_url': 'http://www.youtube.com/user/MrBeast6000',
+                'live_status': 'not_live',
+                'duration': 937,
+                'channel_follower_count': int,
+                'thumbnail': 'https://i.ytimg.com/vi_webp/kX3nB4PpJko/maxresdefault.webp',
+                'title': 'Last To Take Hand Off Jet, Keeps It!',
+                'channel': 'MrBeast',
+                'playable_in_embed': True,
+                'view_count': int,
+                'upload_date': '20221112',
+                'uploader': 'MrBeast',
+                'uploader_id': 'MrBeast6000',
+                'channel_url': 'https://www.youtube.com/channel/UCX6OQ3DkcsbYNE6H8uQQuVA',
+                'age_limit': 0,
+                'availability': 'public',
+                'channel_id': 'UCX6OQ3DkcsbYNE6H8uQQuVA',
+                'like_count': int,
+                'tags': [],
+            },
+            'params': {'extractor_args': {'youtube': {'player_client': ['ios']}}, 'format': '233-1'},
+        }, {
+            'note': 'Audio formats with Dynamic Range Compression',
+            'url': 'https://www.youtube.com/watch?v=Tq92D6wQ1mg',
+            'info_dict': {
+                'id': 'Tq92D6wQ1mg',
+                'ext': 'weba',
+                'title': '[MMD] Adios - EVERGLOW [+Motion DL]',
+                'channel_url': 'https://www.youtube.com/channel/UC1yoRdFoFJaCY-AGfD9W0wQ',
+                'channel_id': 'UC1yoRdFoFJaCY-AGfD9W0wQ',
+                'channel_follower_count': int,
+                'description': 'md5:17eccca93a786d51bc67646756894066',
+                'upload_date': '20191228',
+                'uploader_url': 'http://www.youtube.com/channel/UC1yoRdFoFJaCY-AGfD9W0wQ',
+                'tags': ['mmd', 'dance', 'mikumikudance', 'kpop', 'vtuber'],
+                'playable_in_embed': True,
+                'like_count': int,
+                'categories': ['Entertainment'],
+                'thumbnail': 'https://i.ytimg.com/vi/Tq92D6wQ1mg/sddefault.jpg',
+                'age_limit': 18,
+                'channel': 'Projekt Melody',
+                'uploader_id': 'UC1yoRdFoFJaCY-AGfD9W0wQ',
+                'view_count': int,
+                'availability': 'needs_auth',
+                'comment_count': int,
+                'live_status': 'not_live',
+                'uploader': 'Projekt Melody',
+                'duration': 106,
+            },
+            'params': {'extractor_args': {'youtube': {'player_client': ['tv_embedded']}}, 'format': '251-drc'},
         }
     ]
 
-    @classmethod
-    def suitable(cls, url):
+    _WEBPAGE_TESTS = [
+        # YouTube <object> embed
+        {
+            'url': 'http://www.improbable.com/2017/04/03/untrained-modern-youths-and-ancient-masters-in-selfie-portraits/',
+            'md5': '873c81d308b979f0e23ee7e620b312a3',
+            'info_dict': {
+                'id': 'msN87y-iEx0',
+                'ext': 'mp4',
+                'title': 'Feynman: Mirrors FUN TO IMAGINE 6',
+                'upload_date': '20080526',
+                'description': 'md5:873c81d308b979f0e23ee7e620b312a3',
+                'uploader': 'Christopher Sykes',
+                'uploader_id': 'ChristopherJSykes',
+                'age_limit': 0,
+                'tags': ['feynman', 'mirror', 'science', 'physics', 'imagination', 'fun', 'cool', 'puzzle'],
+                'channel_id': 'UCCeo--lls1vna5YJABWAcVA',
+                'playable_in_embed': True,
+                'thumbnail': 'https://i.ytimg.com/vi/msN87y-iEx0/hqdefault.jpg',
+                'like_count': int,
+                'comment_count': int,
+                'channel': 'Christopher Sykes',
+                'live_status': 'not_live',
+                'channel_url': 'https://www.youtube.com/channel/UCCeo--lls1vna5YJABWAcVA',
+                'availability': 'public',
+                'duration': 195,
+                'view_count': int,
+                'categories': ['Science & Technology'],
+                'channel_follower_count': int,
+                'uploader_url': 'http://www.youtube.com/user/ChristopherJSykes',
+            },
+            'params': {
+                'skip_download': True,
+            }
+        },
+    ]
+
+    @classmethod
+    def suitable(cls, url):
         from ..utils import parse_qs
 
         qs = parse_qs(url)
         if qs.get('list', [None])[0]:
             return False
-        return super(YoutubeIE, cls).suitable(url)
+        return super().suitable(url)
 
     def __init__(self, *args, **kwargs):
-        super(YoutubeIE, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
         self._code_cache = {}
         self._player_cache = {}
 
-    def _prepare_live_from_start_formats(self, formats, video_id, live_start_time, url, webpage_url, smuggled_data):
+    def _prepare_live_from_start_formats(self, formats, video_id, live_start_time, url, webpage_url, smuggled_data, is_live):
         lock = threading.Lock()
-
-        is_live = True
         start_time = time.time()
         formats = [f for f in formats if f.get('is_from_start')]
 
@@ -2114,32 +2642,40 @@ def refetch_manifest(format_id, delay):
             microformats = traverse_obj(
                 prs, (..., 'microformat', 'playerMicroformatRenderer'),
                 expected_type=dict, default=[])
-            _, is_live, _, formats = self._list_formats(video_id, microformats, video_details, prs, player_url)
+            _, live_status, _, formats, _ = self._list_formats(video_id, microformats, video_details, prs, player_url)
+            is_live = live_status == 'is_live'
             start_time = time.time()
 
         def mpd_feed(format_id, delay):
             """
             @returns (manifest_url, manifest_stream_number, is_live) or None
             """
-            with lock:
-                refetch_manifest(format_id, delay)
-
-            f = next((f for f in formats if f['format_id'] == format_id), None)
-            if not f:
-                if not is_live:
-                    self.to_screen(f'{video_id}: Video is no longer live')
-                else:
-                    self.report_warning(
-                        f'Cannot find refreshed manifest for format {format_id}{bug_reports_message()}')
-                return None
-            return f['manifest_url'], f['manifest_stream_number'], is_live
+            for retry in self.RetryManager(fatal=False):
+                with lock:
+                    refetch_manifest(format_id, delay)
+
+                f = next((f for f in formats if f['format_id'] == format_id), None)
+                if not f:
+                    if not is_live:
+                        retry.error = f'{video_id}: Video is no longer live'
+                    else:
+                        retry.error = f'Cannot find refreshed manifest for format {format_id}{bug_reports_message()}'
+                    continue
+                return f['manifest_url'], f['manifest_stream_number'], is_live
+            return None
 
         for f in formats:
-            f['protocol'] = 'http_dash_segments_generator'
-            f['fragments'] = functools.partial(
-                self._live_dash_fragments, f['format_id'], live_start_time, mpd_feed)
+            f['is_live'] = is_live
+            gen = functools.partial(self._live_dash_fragments, video_id, f['format_id'],
+                                    live_start_time, mpd_feed, not is_live and f.copy())
+            if is_live:
+                f['fragments'] = gen
+                f['protocol'] = 'http_dash_segments_generator'
+            else:
+                f['fragments'] = LazyList(gen({}))
+                del f['is_from_start']
 
-    def _live_dash_fragments(self, format_id, live_start_time, mpd_feed, ctx):
+    def _live_dash_fragments(self, video_id, format_id, live_start_time, mpd_feed, manifestless_orig_fmt, ctx):
         FETCH_SPAN, MAX_DURATION = 5, 432000
 
         mpd_url, stream_number, is_live = None, None, True
@@ -2157,12 +2693,12 @@ def _live_dash_fragments(self, format_id, live_start_time, mpd_feed, ctx):
         known_idx, no_fragment_score, last_segment_url = begin_index, 0, None
         fragments, fragment_base_url = None, None
 
-        def _extract_sequence_from_mpd(refresh_sequence):
+        def _extract_sequence_from_mpd(refresh_sequence, immediate):
             nonlocal mpd_url, stream_number, is_live, no_fragment_score, fragments, fragment_base_url
             # Obtain from MPD's maximum seq value
             old_mpd_url = mpd_url
             last_error = ctx.pop('last_error', None)
-            expire_fast = last_error and isinstance(last_error, compat_HTTPError) and last_error.code == 403
+            expire_fast = immediate or last_error and isinstance(last_error, urllib.error.HTTPError) and last_error.code == 403
             mpd_url, stream_number, is_live = (mpd_feed(format_id, 5 if expire_fast else 18000)
                                                or (mpd_url, stream_number, False))
             if not refresh_sequence:
@@ -2170,15 +2706,18 @@ def _extract_sequence_from_mpd(refresh_sequence):
                     return False, last_seq
                 elif old_mpd_url == mpd_url:
                     return True, last_seq
-            try:
-                fmts, _ = self._extract_mpd_formats_and_subtitles(
-                    mpd_url, None, note=False, errnote=False, fatal=False)
-            except ExtractorError:
-                fmts = None
-            if not fmts:
-                no_fragment_score += 1
-                return False, last_seq
-            fmt_info = next(x for x in fmts if x['manifest_stream_number'] == stream_number)
+            if manifestless_orig_fmt:
+                fmt_info = manifestless_orig_fmt
+            else:
+                try:
+                    fmts, _ = self._extract_mpd_formats_and_subtitles(
+                        mpd_url, None, note=False, errnote=False, fatal=False)
+                except ExtractorError:
+                    fmts = None
+                if not fmts:
+                    no_fragment_score += 2
+                    return False, last_seq
+                fmt_info = next(x for x in fmts if x['manifest_stream_number'] == stream_number)
             fragments = fmt_info['fragments']
             fragment_base_url = fmt_info['fragment_base_url']
             assert fragment_base_url
@@ -2186,6 +2725,7 @@ def _extract_sequence_from_mpd(refresh_sequence):
             _last_seq = int(re.search(r'(?:/|^)sq/(\d+)', fragments[-1]['path']).group(1))
             return True, _last_seq
 
+        self.write_debug(f'[{video_id}] Generating fragments for format {format_id}')
         while is_live:
             fetch_time = time.time()
             if no_fragment_score > 30:
@@ -2199,11 +2739,12 @@ def _extract_sequence_from_mpd(refresh_sequence):
                     urlh = None
                 last_seq = try_get(urlh, lambda x: int_or_none(x.headers['X-Head-Seqnum']))
                 if last_seq is None:
-                    no_fragment_score += 1
+                    no_fragment_score += 2
                     last_segment_url = None
                     continue
             else:
-                should_continue, last_seq = _extract_sequence_from_mpd(True)
+                should_continue, last_seq = _extract_sequence_from_mpd(True, no_fragment_score > 15)
+                no_fragment_score += 2
                 if not should_continue:
                     continue
 
@@ -2221,13 +2762,14 @@ def _extract_sequence_from_mpd(refresh_sequence):
             try:
                 for idx in range(known_idx, last_seq):
                     # do not update sequence here or you'll get skipped some part of it
-                    should_continue, _ = _extract_sequence_from_mpd(False)
+                    should_continue, _ = _extract_sequence_from_mpd(False, False)
                     if not should_continue:
                         known_idx = idx - 1
                         raise ExtractorError('breaking out of outer loop')
                     last_segment_url = urljoin(fragment_base_url, 'sq/%d' % idx)
                     yield {
                         'url': last_segment_url,
+                        'fragment_count': last_seq,
                     }
                 if known_idx == last_seq:
                     no_fragment_score += 5
@@ -2237,12 +2779,17 @@ def _extract_sequence_from_mpd(refresh_sequence):
             except ExtractorError:
                 continue
 
+            if manifestless_orig_fmt:
+                # Stop at the first iteration if running for post-live manifestless;
+                # fragment count no longer increase since it starts
+                break
+
             time.sleep(max(0, FETCH_SPAN + fetch_time - time.time()))
 
     def _extract_player_url(self, *ytcfgs, webpage=None):
         player_url = traverse_obj(
             ytcfgs, (..., 'PLAYER_JS_URL'), (..., 'WEB_PLAYER_CONTEXT_CONFIGS', ..., 'jsUrl'),
-            get_all=False, expected_type=compat_str)
+            get_all=False, expected_type=str)
         if not player_url:
             return
         return urljoin('https://www.youtube.com', player_url)
@@ -2259,7 +2806,7 @@ def _download_player_url(self, video_id, fatal=False):
 
     def _signature_cache_id(self, example_sig):
         """ Return a string representation of a signature """
-        return '.'.join(compat_str(len(part)) for part in example_sig.split('.'))
+        return '.'.join(str(len(part)) for part in example_sig.split('.'))
 
     @classmethod
     def _extract_player_info(cls, player_url):
@@ -2286,24 +2833,21 @@ def _extract_signature_function(self, video_id, player_url, example_sig):
         player_id = self._extract_player_info(player_url)
 
         # Read from filesystem cache
-        func_id = 'js_%s_%s' % (
-            player_id, self._signature_cache_id(example_sig))
+        func_id = f'js_{player_id}_{self._signature_cache_id(example_sig)}'
         assert os.path.basename(func_id) == func_id
 
-        cache_spec = self._downloader.cache.load('youtube-sigfuncs', func_id)
-        if cache_spec is not None:
-            return lambda s: ''.join(s[i] for i in cache_spec)
+        self.write_debug(f'Extracting signature function {func_id}')
+        cache_spec, code = self.cache.load('youtube-sigfuncs', func_id), None
 
-        code = self._load_player(video_id, player_url)
+        if not cache_spec:
+            code = self._load_player(video_id, player_url)
         if code:
             res = self._parse_sig_js(code)
+            test_string = ''.join(map(chr, range(len(example_sig))))
+            cache_spec = [ord(c) for c in res(test_string)]
+            self.cache.store('youtube-sigfuncs', func_id, cache_spec)
 
-            test_string = ''.join(map(compat_chr, range(len(example_sig))))
-            cache_res = res(test_string)
-            cache_spec = [ord(c) for c in cache_res]
-
-            self._downloader.cache.store('youtube-sigfuncs', func_id, cache_spec)
-            return res
+        return lambda s: ''.join(s[i] for i in cache_spec)
 
     def _print_sig_code(self, func, example_sig):
         if not self.get_param('youtube_print_sig_code'):
@@ -2314,7 +2858,7 @@ def _genslice(start, end, step):
                 starts = '' if start == 0 else str(start)
                 ends = (':%d' % (end + step)) if end + step >= 0 else ':'
                 steps = '' if step == 1 else (':%d' % step)
-                return 's[%s%s%s]' % (starts, ends, steps)
+                return f's[{starts}{ends}{steps}]'
 
             step = None
             # Quelch pyflakes warnings - start will be set when step is set
@@ -2337,12 +2881,12 @@ def _genslice(start, end, step):
             else:
                 yield _genslice(start, i, step)
 
-        test_string = ''.join(map(compat_chr, range(len(example_sig))))
+        test_string = ''.join(map(chr, range(len(example_sig))))
         cache_res = func(test_string)
         cache_spec = [ord(c) for c in cache_res]
         expr_code = ' + '.join(gen_sig_code(cache_spec))
         signature_id_tuple = '(%s)' % (
-            ', '.join(compat_str(len(p)) for p in example_sig.split('.')))
+            ', '.join(str(len(p)) for p in example_sig.split('.')))
         code = ('if tuple(len(p) for p in s.split(\'.\')) == %s:\n'
                 '    return %s\n') % (signature_id_tuple, expr_code)
         self.to_screen('Extracted signature function:\n' + code)
@@ -2371,24 +2915,29 @@ def _parse_sig_js(self, jscode):
         initial_function = jsi.extract_function(funcname)
         return lambda s: initial_function([s])
 
-    def _decrypt_signature(self, s, video_id, player_url):
-        """Turn the encrypted s field into a working signature"""
+    def _cached(self, func, *cache_id):
+        def inner(*args, **kwargs):
+            if cache_id not in self._player_cache:
+                try:
+                    self._player_cache[cache_id] = func(*args, **kwargs)
+                except ExtractorError as e:
+                    self._player_cache[cache_id] = e
+                except Exception as e:
+                    self._player_cache[cache_id] = ExtractorError(traceback.format_exc(), cause=e)
 
-        if player_url is None:
-            raise ExtractorError('Cannot decrypt signature without player_url')
+            ret = self._player_cache[cache_id]
+            if isinstance(ret, Exception):
+                raise ret
+            return ret
+        return inner
 
-        try:
-            player_id = (player_url, self._signature_cache_id(s))
-            if player_id not in self._player_cache:
-                func = self._extract_signature_function(
-                    video_id, player_url, s
-                )
-                self._player_cache[player_id] = func
-            func = self._player_cache[player_id]
-            self._print_sig_code(func, s)
-            return func(s)
-        except Exception as e:
-            raise ExtractorError('Signature extraction failed: ' + traceback.format_exc(), cause=e)
+    def _decrypt_signature(self, s, video_id, player_url):
+        """Turn the encrypted s field into a working signature"""
+        extract_sig = self._cached(
+            self._extract_signature_function, 'sig', player_url, self._signature_cache_id(s))
+        func = extract_sig(video_id, player_url, s)
+        self._print_sig_code(func, s)
+        return func(s)
 
     def _decrypt_nsig(self, s, video_id, player_url):
         """Turn the encrypted n field into a working signature"""
@@ -2396,48 +2945,87 @@ def _decrypt_nsig(self, s, video_id, player_url):
             raise ExtractorError('Cannot decrypt nsig without player_url')
         player_url = urljoin('https://www.youtube.com', player_url)
 
-        sig_id = ('nsig_value', s)
-        if sig_id in self._player_cache:
-            return self._player_cache[sig_id]
+        try:
+            jsi, player_id, func_code = self._extract_n_function_code(video_id, player_url)
+        except ExtractorError as e:
+            raise ExtractorError('Unable to extract nsig function code', cause=e)
+        if self.get_param('youtube_print_sig_code'):
+            self.to_screen(f'Extracted nsig function from {player_id}:\n{func_code[1]}\n')
 
         try:
-            player_id = ('nsig', player_url)
-            if player_id not in self._player_cache:
-                self._player_cache[player_id] = self._extract_n_function(video_id, player_url)
-            func = self._player_cache[player_id]
-            self._player_cache[sig_id] = func(s)
-            self.write_debug(f'Decrypted nsig {s} => {self._player_cache[sig_id]}')
-            return self._player_cache[sig_id]
-        except Exception as e:
-            raise ExtractorError(traceback.format_exc(), cause=e, video_id=video_id)
+            extract_nsig = self._cached(self._extract_n_function_from_code, 'nsig func', player_url)
+            ret = extract_nsig(jsi, func_code)(s)
+        except JSInterpreter.Exception as e:
+            try:
+                jsi = PhantomJSwrapper(self, timeout=5000)
+            except ExtractorError:
+                raise e
+            self.report_warning(
+                f'Native nsig extraction failed: Trying with PhantomJS\n'
+                f'         n = {s} ; player = {player_url}', video_id)
+            self.write_debug(e, only_once=True)
+
+            args, func_body = func_code
+            ret = jsi.execute(
+                f'console.log(function({", ".join(args)}) {{ {func_body} }}({s!r}));',
+                video_id=video_id, note='Executing signature code').strip()
+
+        self.write_debug(f'Decrypted nsig {s} => {ret}')
+        return ret
 
     def _extract_n_function_name(self, jscode):
-        nfunc, idx = self._search_regex(
+        funcname, idx = self._search_regex(
             r'\.get\("n"\)\)&&\(b=(?P<nfunc>[a-zA-Z0-9$]+)(?:\[(?P<idx>\d+)\])?\([a-zA-Z0-9]\)',
             jscode, 'Initial JS player n function name', group=('nfunc', 'idx'))
         if not idx:
-            return nfunc
+            return funcname
+
         return json.loads(js_to_json(self._search_regex(
-            rf'var {re.escape(nfunc)}\s*=\s*(\[.+?\]);', jscode,
-            f'Initial JS player n function list ({nfunc}.{idx})')))[int(idx)]
+            rf'var {re.escape(funcname)}\s*=\s*(\[.+?\]);', jscode,
+            f'Initial JS player n function list ({funcname}.{idx})')))[int(idx)]
 
-    def _extract_n_function(self, video_id, player_url):
+    def _extract_n_function_code(self, video_id, player_url):
         player_id = self._extract_player_info(player_url)
-        func_code = self._downloader.cache.load('youtube-nsig', player_id)
+        func_code = self.cache.load('youtube-nsig', player_id, min_ver='2022.09.1')
+        jscode = func_code or self._load_player(video_id, player_url)
+        jsi = JSInterpreter(jscode)
+
+        if func_code:
+            return jsi, player_id, func_code
+
+        func_name = self._extract_n_function_name(jscode)
 
+        # For redundancy
+        func_code = self._search_regex(
+            r'''(?xs)%s\s*=\s*function\s*\((?P<var>[\w$]+)\)\s*
+                     # NB: The end of the regex is intentionally kept strict
+                     {(?P<code>.+?}\s*return\ [\w$]+.join\(""\))};''' % func_name,
+            jscode, 'nsig function', group=('var', 'code'), default=None)
         if func_code:
-            jsi = JSInterpreter(func_code)
+            func_code = ([func_code[0]], func_code[1])
         else:
-            jscode = self._load_player(video_id, player_url)
-            funcname = self._extract_n_function_name(jscode)
-            jsi = JSInterpreter(jscode)
-            func_code = jsi.extract_function_code(funcname)
-            self._downloader.cache.store('youtube-nsig', player_id, func_code)
+            self.write_debug('Extracting nsig function with jsinterp')
+            func_code = jsi.extract_function_code(func_name)
 
-        if self.get_param('youtube_print_sig_code'):
-            self.to_screen(f'Extracted nsig function from {player_id}:\n{func_code[1]}\n')
+        self.cache.store('youtube-nsig', player_id, func_code)
+        return jsi, player_id, func_code
 
-        return lambda s: jsi.extract_function_from_code(*func_code)([s])
+    def _extract_n_function_from_code(self, jsi, func_code):
+        func = jsi.extract_function_from_code(*func_code)
+
+        def extract_nsig(s):
+            try:
+                ret = func([s])
+            except JSInterpreter.Exception:
+                raise
+            except Exception as e:
+                raise JSInterpreter.Exception(traceback.format_exc(), cause=e)
+
+            if ret.startswith('enhanced_except_'):
+                raise JSInterpreter.Exception('Signature function returned an exception')
+            return ret
+
+        return extract_nsig
 
     def _extract_signature_timestamp(self, video_id, player_url, ytcfg=None, fatal=False):
         """
@@ -2464,74 +3052,76 @@ def _extract_signature_timestamp(self, video_id, player_url, ytcfg=None, fatal=F
         return sts
 
     def _mark_watched(self, video_id, player_responses):
-        playback_url = get_first(
-            player_responses, ('playbackTracking', 'videostatsPlaybackUrl', 'baseUrl'),
-            expected_type=url_or_none)
-        if not playback_url:
-            self.report_warning('Unable to mark watched')
-            return
-        parsed_playback_url = compat_urlparse.urlparse(playback_url)
-        qs = compat_urlparse.parse_qs(parsed_playback_url.query)
+        for is_full, key in enumerate(('videostatsPlaybackUrl', 'videostatsWatchtimeUrl')):
+            label = 'fully ' if is_full else ''
+            url = get_first(player_responses, ('playbackTracking', key, 'baseUrl'),
+                            expected_type=url_or_none)
+            if not url:
+                self.report_warning(f'Unable to mark {label}watched')
+                return
+            parsed_url = urllib.parse.urlparse(url)
+            qs = urllib.parse.parse_qs(parsed_url.query)
+
+            # cpn generation algorithm is reverse engineered from base.js.
+            # In fact it works even with dummy cpn.
+            CPN_ALPHABET = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_'
+            cpn = ''.join(CPN_ALPHABET[random.randint(0, 256) & 63] for _ in range(0, 16))
+
+            # # more consistent results setting it to right before the end
+            video_length = [str(float((qs.get('len') or ['1.5'])[0]) - 1)]
+
+            qs.update({
+                'ver': ['2'],
+                'cpn': [cpn],
+                'cmt': video_length,
+                'el': 'detailpage',  # otherwise defaults to "shorts"
+            })
 
-        # cpn generation algorithm is reverse engineered from base.js.
-        # In fact it works even with dummy cpn.
-        CPN_ALPHABET = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_'
-        cpn = ''.join((CPN_ALPHABET[random.randint(0, 256) & 63] for _ in range(0, 16)))
+            if is_full:
+                # these seem to mark watchtime "history" in the real world
+                # they're required, so send in a single value
+                qs.update({
+                    'st': 0,
+                    'et': video_length,
+                })
 
-        qs.update({
-            'ver': ['2'],
-            'cpn': [cpn],
-        })
-        playback_url = compat_urlparse.urlunparse(
-            parsed_playback_url._replace(query=compat_urllib_parse_urlencode(qs, True)))
+            url = urllib.parse.urlunparse(
+                parsed_url._replace(query=urllib.parse.urlencode(qs, True)))
 
-        self._download_webpage(
-            playback_url, video_id, 'Marking watched',
-            'Unable to mark watched', fatal=False)
+            self._download_webpage(
+                url, video_id, f'Marking {label}watched',
+                'Unable to mark watched', fatal=False)
 
-    @staticmethod
-    def _extract_urls(webpage):
-        # Embedded YouTube player
-        entries = [
-            unescapeHTML(mobj.group('url'))
-            for mobj in re.finditer(r'''(?x)
-            (?:
-                <iframe[^>]+?src=|
-                data-video-url=|
-                <embed[^>]+?src=|
-                embedSWF\(?:\s*|
-                <object[^>]+data=|
-                new\s+SWFObject\(
-            )
-            (["\'])
-                (?P<url>(?:https?:)?//(?:www\.)?youtube(?:-nocookie)?\.com/
-                (?:embed|v|p)/[0-9A-Za-z_-]{11}.*?)
-            \1''', webpage)]
+    @classmethod
+    def _extract_from_webpage(cls, url, webpage):
+        # Invidious Instances
+        # https://github.com/yt-dlp/yt-dlp/issues/195
+        # https://github.com/iv-org/invidious/pull/1730
+        mobj = re.search(
+            r'<link rel="alternate" href="(?P<url>https://www\.youtube\.com/watch\?v=[0-9A-Za-z_-]{11})"',
+            webpage)
+        if mobj:
+            yield cls.url_result(mobj.group('url'), cls)
+            raise cls.StopExtraction()
+
+        yield from super()._extract_from_webpage(url, webpage)
 
         # lazyYT YouTube embed
-        entries.extend(list(map(
-            unescapeHTML,
-            re.findall(r'class="lazyYT" data-youtube-id="([^"]+)"', webpage))))
+        for id_ in re.findall(r'class="lazyYT" data-youtube-id="([^"]+)"', webpage):
+            yield cls.url_result(unescapeHTML(id_), cls, id_)
 
         # Wordpress "YouTube Video Importer" plugin
-        matches = re.findall(r'''(?x)<div[^>]+
-            class=(?P<q1>[\'"])[^\'"]*\byvii_single_video_player\b[^\'"]*(?P=q1)[^>]+
-            data-video_id=(?P<q2>[\'"])([^\'"]+)(?P=q2)''', webpage)
-        entries.extend(m[-1] for m in matches)
-
-        return entries
-
-    @staticmethod
-    def _extract_url(webpage):
-        urls = YoutubeIE._extract_urls(webpage)
-        return urls[0] if urls else None
+        for m in re.findall(r'''(?x)<div[^>]+
+                class=(?P<q1>[\'"])[^\'"]*\byvii_single_video_player\b[^\'"]*(?P=q1)[^>]+
+                data-video_id=(?P<q2>[\'"])([^\'"]+)(?P=q2)''', webpage):
+            yield cls.url_result(m[-1], cls, m[-1])
 
     @classmethod
     def extract_id(cls, url):
-        mobj = re.match(cls._VALID_URL, url, re.VERBOSE)
-        if mobj is None:
-            raise ExtractorError('Invalid URL: %s' % url)
-        return mobj.group('id')
+        video_id = cls.get_temp_id(url)
+        if not video_id:
+            raise ExtractorError(f'Invalid URL: {url}')
+        return video_id
 
     def _extract_chapters_from_json(self, data, duration):
         chapter_list = traverse_obj(
@@ -2556,39 +3146,42 @@ def _extract_chapters_from_engagement_panel(self, data, duration):
         chapter_time = lambda chapter: parse_duration(self._get_text(chapter, 'timeDescription'))
         chapter_title = lambda chapter: self._get_text(chapter, 'title')
 
-        return next((
-            filter(None, (
-                self._extract_chapters(
-                    traverse_obj(contents, (..., 'macroMarkersListItemRenderer')),
-                    chapter_time, chapter_title, duration)
-                for contents in content_list
-            ))), [])
-
-    def _extract_chapters(self, chapter_list, chapter_time, chapter_title, duration):
-        chapters = []
-        last_chapter = {'start_time': 0}
-        for idx, chapter in enumerate(chapter_list or []):
-            title = chapter_title(chapter)
-            start_time = chapter_time(chapter)
-            if start_time is None:
-                continue
-            last_chapter['end_time'] = start_time
-            if start_time < last_chapter['start_time']:
-                if idx == 1:
-                    chapters.pop()
-                    self.report_warning('Invalid start time for chapter "%s"' % last_chapter['title'])
-                else:
-                    self.report_warning(f'Invalid start time for chapter "{title}"')
-                    continue
-            last_chapter = {'start_time': start_time, 'title': title}
-            chapters.append(last_chapter)
-        last_chapter['end_time'] = duration
-        return chapters
+        return next(filter(None, (
+            self._extract_chapters(traverse_obj(contents, (..., 'macroMarkersListItemRenderer')),
+                                   chapter_time, chapter_title, duration)
+            for contents in content_list)), [])
 
-    def _extract_yt_initial_variable(self, webpage, regex, video_id, name):
-        return self._parse_json(self._search_regex(
-            (r'%s\s*%s' % (regex, self._YT_INITIAL_BOUNDARY_RE),
-             regex), webpage, name, default='{}'), video_id, fatal=False)
+    def _extract_chapters_from_description(self, description, duration):
+        duration_re = r'(?:\d+:)?\d{1,2}:\d{2}'
+        sep_re = r'(?m)^\s*(%s)\b\W*\s(%s)\s*$'
+        return self._extract_chapters(
+            re.findall(sep_re % (duration_re, r'.+?'), description or ''),
+            chapter_time=lambda x: parse_duration(x[0]), chapter_title=lambda x: x[1],
+            duration=duration, strict=False) or self._extract_chapters(
+            re.findall(sep_re % (r'.+?', duration_re), description or ''),
+            chapter_time=lambda x: parse_duration(x[1]), chapter_title=lambda x: x[0],
+            duration=duration, strict=False)
+
+    def _extract_chapters(self, chapter_list, chapter_time, chapter_title, duration, strict=True):
+        if not duration:
+            return
+        chapter_list = [{
+            'start_time': chapter_time(chapter),
+            'title': chapter_title(chapter),
+        } for chapter in chapter_list or []]
+        if not strict:
+            chapter_list.sort(key=lambda c: c['start_time'] or 0)
+
+        chapters = [{'start_time': 0}]
+        for idx, chapter in enumerate(chapter_list):
+            if chapter['start_time'] is None:
+                self.report_warning(f'Incomplete chapter {idx}')
+            elif chapters[-1]['start_time'] <= chapter['start_time'] <= duration:
+                chapters.append(chapter)
+            elif chapter not in chapters:
+                self.report_warning(
+                    f'Invalid start time ({chapter["start_time"]} < {chapters[-1]["start_time"]}) for chapter "{chapter["title"]}"')
+        return chapters[1:]
 
     def _extract_comment(self, comment_renderer, parent=None):
         comment_id = comment_renderer.get('commentId')
@@ -2597,16 +3190,18 @@ def _extract_comment(self, comment_renderer, parent=None):
 
         text = self._get_text(comment_renderer, 'contentText')
 
-        # note: timestamp is an estimate calculated from the current time and time_text
-        timestamp, time_text = self._extract_time_text(comment_renderer, 'publishedTimeText')
+        # Timestamp is an estimate calculated from the current time and time_text
+        time_text = self._get_text(comment_renderer, 'publishedTimeText') or ''
+        timestamp = self._parse_time_text(time_text)
+
         author = self._get_text(comment_renderer, 'authorText')
         author_id = try_get(comment_renderer,
-                            lambda x: x['authorEndpoint']['browseEndpoint']['browseId'], compat_str)
+                            lambda x: x['authorEndpoint']['browseEndpoint']['browseId'], str)
 
         votes = parse_count(try_get(comment_renderer, (lambda x: x['voteCount']['simpleText'],
-                                                       lambda x: x['likeCount']), compat_str)) or 0
+                                                       lambda x: x['likeCount']), str)) or 0
         author_thumbnail = try_get(comment_renderer,
-                                   lambda x: x['authorThumbnail']['thumbnails'][-1]['url'], compat_str)
+                                   lambda x: x['authorThumbnail']['thumbnails'][-1]['url'], str)
 
         author_is_uploader = try_get(comment_renderer, lambda x: x['authorIsChannelOwner'], bool)
         is_favorited = 'creatorHeart' in (try_get(
@@ -2685,8 +3280,8 @@ def extract_thread(contents):
                     comment_entries_iter = self._comment_entries(
                         comment_replies_renderer, ytcfg, video_id,
                         parent=comment.get('id'), tracker=tracker)
-                    for reply_comment in itertools.islice(comment_entries_iter, min(max_replies_per_thread, max(0, max_replies - tracker['total_reply_comments']))):
-                        yield reply_comment
+                    yield from itertools.islice(comment_entries_iter, min(
+                        max_replies_per_thread, max(0, max_replies - tracker['total_reply_comments'])))
 
         # Keeps track of counts across recursive calls
         if not tracker:
@@ -2701,8 +3296,8 @@ def extract_thread(contents):
         # YouTube comments have a max depth of 2
         max_depth = int_or_none(get_single_config_arg('max_comment_depth'))
         if max_depth:
-            self._downloader.deprecation_warning(
-                '[youtube] max_comment_depth extractor argument is deprecated. Set max replies in the max-comments extractor argument instead.')
+            self._downloader.deprecated_feature('[youtube] max_comment_depth extractor argument is deprecated. '
+                                                'Set max replies in the max-comments extractor argument instead')
         if max_depth == 1 and parent:
             return
 
@@ -2710,12 +3305,17 @@ def extract_thread(contents):
             lambda p: int_or_none(p, default=sys.maxsize), self._configuration_arg('max_comments', ) + [''] * 4)
 
         continuation = self._extract_continuation(root_continuation_data)
-        message = self._get_text(root_continuation_data, ('contents', ..., 'messageRenderer', 'text'), max_runs=1)
-        if message and not parent:
-            self.report_warning(message, video_id=video_id)
 
         response = None
+        is_forced_continuation = False
         is_first_continuation = parent is None
+        if is_first_continuation and not continuation:
+            # Sometimes you can get comments by generating the continuation yourself,
+            # even if YouTube initially reports them being disabled - e.g. stories comments.
+            # Note: if the comment section is actually disabled, YouTube may return a response with
+            # required check_get_keys missing. So we will disable that check initially in this case.
+            continuation = self._build_api_continuation_query(self._generate_comment_continuation(video_id))
+            is_forced_continuation = True
 
         for page_num in itertools.count(0):
             if not continuation:
@@ -2732,12 +3332,22 @@ def extract_thread(contents):
                 note_prefix = '%sDownloading comment%s API JSON page %d %s' % (
                     '       ' if parent else '', ' replies' if parent else '',
                     page_num, comment_prog_str)
-
-            response = self._extract_response(
-                item_id=None, query=continuation,
-                ep='next', ytcfg=ytcfg, headers=headers, note=note_prefix,
-                check_get_keys='onResponseReceivedEndpoints')
-
+            try:
+                response = self._extract_response(
+                    item_id=None, query=continuation,
+                    ep='next', ytcfg=ytcfg, headers=headers, note=note_prefix,
+                    check_get_keys='onResponseReceivedEndpoints' if not is_forced_continuation else None)
+            except ExtractorError as e:
+                # Ignore incomplete data error for replies if retries didn't work.
+                # This is to allow any other parent comments and comment threads to be downloaded.
+                # See: https://github.com/yt-dlp/yt-dlp/issues/4669
+                if 'incomplete data' in str(e).lower() and parent and self.get_param('ignoreerrors') is True:
+                    self.report_warning(
+                        'Received incomplete data for a comment reply thread and retrying did not help. '
+                        'Ignoring to let other comments be downloaded.')
+                else:
+                    raise
+            is_forced_continuation = False
             continuation_contents = traverse_obj(
                 response, 'onResponseReceivedEndpoints', expected_type=list, default=[])
 
@@ -2762,6 +3372,19 @@ def extract_thread(contents):
                 if continuation:
                     break
 
+        message = self._get_text(root_continuation_data, ('contents', ..., 'messageRenderer', 'text'), max_runs=1)
+        if message and not parent and tracker['running_total'] == 0:
+            self.report_warning(f'Youtube said: {message}', video_id=video_id, only_once=True)
+            raise self.CommentsDisabled
+
+    @staticmethod
+    def _generate_comment_continuation(video_id):
+        """
+        Generates initial comment section continuation token from given video id
+        """
+        token = f'\x12\r\x12\x0b{video_id}\x18\x062\'"\x11"\x0b{video_id}0\x00x\x020\x00B\x10comments-section'
+        return base64.b64encode(token.encode()).decode()
+
     def _get_comments(self, ytcfg, video_id, contents, webpage):
         """Entry for comment extraction"""
         def _real_comment_extract(contents):
@@ -2807,7 +3430,9 @@ def _is_agegated(player_response):
     def _is_unplayable(player_response):
         return traverse_obj(player_response, ('playabilityStatus', 'status')) == 'UNPLAYABLE'
 
-    def _extract_player_response(self, client, video_id, master_ytcfg, player_ytcfg, player_url, initial_pr):
+    _STORY_PLAYER_PARAMS = '8AEB'
+
+    def _extract_player_response(self, client, video_id, master_ytcfg, player_ytcfg, player_url, initial_pr, smuggled_data):
 
         session_index = self._extract_session_index(player_ytcfg, master_ytcfg)
         syncid = self._extract_account_syncid(player_ytcfg, master_ytcfg, initial_pr)
@@ -2815,7 +3440,12 @@ def _extract_player_response(self, client, video_id, master_ytcfg, player_ytcfg,
         headers = self.generate_api_headers(
             ytcfg=player_ytcfg, account_syncid=syncid, session_index=session_index, default_client=client)
 
-        yt_query = {'videoId': video_id}
+        yt_query = {
+            'videoId': video_id,
+        }
+        if smuggled_data.get('is_story') or _split_innertube_client(client)[0] == 'android':
+            yt_query['params'] = self._STORY_PLAYER_PARAMS
+
         yt_query.update(self._generate_player_context(sts))
         return self._extract_response(
             item_id=video_id, ep='player', query=yt_query,
@@ -2828,7 +3458,7 @@ def _get_requested_clients(self, url, smuggled_data):
         requested_clients = []
         default = ['android', 'web']
         allowed_clients = sorted(
-            [client for client in INNERTUBE_CLIENTS.keys() if client[:1] != '_'],
+            (client for client in INNERTUBE_CLIENTS.keys() if client[:1] != '_'),
             key=lambda client: INNERTUBE_CLIENTS[client]['priority'], reverse=True)
         for client in self._configuration_arg('player_client'):
             if client in allowed_clients:
@@ -2848,30 +3478,25 @@ def _get_requested_clients(self, url, smuggled_data):
 
         return orderedSet(requested_clients)
 
-    def _extract_player_ytcfg(self, client, video_id):
-        url = {
-            'web_music': 'https://music.youtube.com',
-            'web_embedded': f'https://www.youtube.com/embed/{video_id}?html5=1'
-        }.get(client)
-        if not url:
-            return {}
-        webpage = self._download_webpage(url, video_id, fatal=False, note='Downloading %s config' % client.replace('_', ' ').strip())
-        return self.extract_ytcfg(video_id, webpage) or {}
-
-    def _extract_player_responses(self, clients, video_id, webpage, master_ytcfg):
+    def _extract_player_responses(self, clients, video_id, webpage, master_ytcfg, smuggled_data):
         initial_pr = None
         if webpage:
-            initial_pr = self._extract_yt_initial_variable(
-                webpage, self._YT_INITIAL_PLAYER_RESPONSE_RE,
-                video_id, 'initial player response')
+            initial_pr = self._search_json(
+                self._YT_INITIAL_PLAYER_RESPONSE_RE, webpage, 'initial player response', video_id, fatal=False)
 
-        original_clients = clients
+        all_clients = set(clients)
         clients = clients[::-1]
         prs = []
 
-        def append_client(client_name):
-            if client_name in INNERTUBE_CLIENTS and client_name not in original_clients:
-                clients.append(client_name)
+        def append_client(*client_names):
+            """ Append the first client name that exists but not already used """
+            for client_name in client_names:
+                actual_client = _split_innertube_client(client_name)[0]
+                if actual_client in INNERTUBE_CLIENTS:
+                    if actual_client not in all_clients:
+                        clients.append(client_name)
+                        all_clients.add(actual_client)
+                        return
 
         # Android player_response does not have microFormats which are needed for
         # extraction of some data. So we return the initial_pr with formats
@@ -2886,10 +3511,10 @@ def append_client(client_name):
         tried_iframe_fallback = False
         player_url = None
         while clients:
-            client = clients.pop()
+            client, base_client, variant = _split_innertube_client(clients.pop())
             player_ytcfg = master_ytcfg if client == 'web' else {}
-            if 'configs' not in self._configuration_arg('player_skip'):
-                player_ytcfg = self._extract_player_ytcfg(client, video_id) or player_ytcfg
+            if 'configs' not in self._configuration_arg('player_skip') and client != 'web':
+                player_ytcfg = self._download_ytcfg(client, video_id) or player_ytcfg
 
             player_url = player_url or self._extract_player_url(master_ytcfg, player_ytcfg, webpage=webpage)
             require_js_player = self._get_default_ytcfg(client).get('REQUIRE_JS_PLAYER')
@@ -2903,7 +3528,7 @@ def append_client(client_name):
 
             try:
                 pr = initial_pr if client == 'web' and initial_pr else self._extract_player_response(
-                    client, video_id, player_ytcfg or master_ytcfg, player_ytcfg, player_url if require_js_player else None, initial_pr)
+                    client, video_id, player_ytcfg or master_ytcfg, player_ytcfg, player_url if require_js_player else None, initial_pr, smuggled_data)
             except ExtractorError as e:
                 if last_error:
                     self.report_warning(last_error)
@@ -2911,13 +3536,23 @@ def append_client(client_name):
                 continue
 
             if pr:
-                prs.append(pr)
+                # YouTube may return a different video player response than expected.
+                # See: https://github.com/TeamNewPipe/NewPipe/issues/8713
+                pr_video_id = traverse_obj(pr, ('videoDetails', 'videoId'))
+                if pr_video_id and pr_video_id != video_id:
+                    self.report_warning(
+                        f'Skipping player response from {client} client (got player response for video "{pr_video_id}" instead of "{video_id}")' + bug_reports_message())
+                else:
+                    prs.append(pr)
 
             # creator clients can bypass AGE_VERIFICATION_REQUIRED if logged in
-            if client.endswith('_agegate') and self._is_unplayable(pr) and self.is_authenticated:
-                append_client(client.replace('_agegate', '_creator'))
+            if variant == 'embedded' and self._is_unplayable(pr) and self.is_authenticated:
+                append_client(f'{base_client}_creator')
             elif self._is_agegated(pr):
-                append_client(f'{client}_agegate')
+                if variant == 'tv_embedded':
+                    append_client(f'{base_client}_embedded')
+                elif not variant:
+                    append_client(f'tv_embedded.{base_client}', f'{base_client}_embedded')
 
         if last_error:
             if not len(prs):
@@ -2925,9 +3560,14 @@ def append_client(client_name):
             self.report_warning(last_error)
         return prs, player_url
 
-    def _extract_formats(self, streaming_data, video_id, player_url, is_live):
-        itags, stream_ids = {}, []
-        itag_qualities, res_qualities = {}, {}
+    def _needs_live_processing(self, live_status, duration):
+        if (live_status == 'is_live' and self.get_param('live_from_start')
+                or live_status == 'post_live' and (duration or 0) > 4 * 3600):
+            return live_status
+
+    def _extract_formats_and_subtitles(self, streaming_data, video_id, player_url, live_status, duration):
+        itags, stream_ids = collections.defaultdict(set), []
+        itag_qualities, res_qualities = {}, {0: None}
         q = qualities([
             # Normally tiny is the smallest video-only formats. But
             # audio-only formats with unknown quality may get tagged as tiny
@@ -2936,15 +3576,14 @@ def _extract_formats(self, streaming_data, video_id, player_url, is_live):
             'small', 'medium', 'large', 'hd720', 'hd1080', 'hd1440', 'hd2160', 'hd2880', 'highres'
         ])
         streaming_formats = traverse_obj(streaming_data, (..., ('formats', 'adaptiveFormats'), ...), default=[])
-        approx_duration = max(traverse_obj(streaming_formats, (..., 'approxDurationMs'), expected_type=float_or_none) or [0]) or None
 
         for fmt in streaming_formats:
-            if fmt.get('targetDurationSec') or fmt.get('drmFamilies'):
+            if fmt.get('targetDurationSec'):
                 continue
 
             itag = str_or_none(fmt.get('itag'))
             audio_track = fmt.get('audioTrack') or {}
-            stream_id = '%s.%s' % (itag or '', audio_track.get('id', ''))
+            stream_id = (itag, audio_track.get('id'), fmt.get('isDrc'))
             if stream_id in stream_ids:
                 continue
 
@@ -2969,61 +3608,86 @@ def _extract_formats(self, streaming_data, video_id, player_url, is_live):
 
             fmt_url = fmt.get('url')
             if not fmt_url:
-                sc = compat_parse_qs(fmt.get('signatureCipher'))
+                sc = urllib.parse.parse_qs(fmt.get('signatureCipher'))
                 fmt_url = url_or_none(try_get(sc, lambda x: x['url'][0]))
                 encrypted_sig = try_get(sc, lambda x: x['s'][0])
-                if not (sc and fmt_url and encrypted_sig):
+                if not all((sc, fmt_url, player_url, encrypted_sig)):
                     continue
-                if not player_url:
+                try:
+                    fmt_url += '&%s=%s' % (
+                        traverse_obj(sc, ('sp', -1)) or 'signature',
+                        self._decrypt_signature(encrypted_sig, video_id, player_url)
+                    )
+                except ExtractorError as e:
+                    self.report_warning('Signature extraction failed: Some formats may be missing',
+                                        video_id=video_id, only_once=True)
+                    self.write_debug(e, only_once=True)
                     continue
-                signature = self._decrypt_signature(sc['s'][0], video_id, player_url)
-                sp = try_get(sc, lambda x: x['sp'][0]) or 'signature'
-                fmt_url += '&' + sp + '=' + signature
 
             query = parse_qs(fmt_url)
             throttled = False
             if query.get('n'):
                 try:
+                    decrypt_nsig = self._cached(self._decrypt_nsig, 'nsig', query['n'][0])
                     fmt_url = update_url_query(fmt_url, {
-                        'n': self._decrypt_nsig(query['n'][0], video_id, player_url)})
+                        'n': decrypt_nsig(query['n'][0], video_id, player_url)
+                    })
                 except ExtractorError as e:
-                    self.report_warning(
-                        f'nsig extraction failed: You may experience throttling for some formats\n'
-                        f'n = {query["n"][0]} ; player = {player_url}\n{e}', only_once=True)
+                    phantomjs_hint = ''
+                    if isinstance(e, JSInterpreter.Exception):
+                        phantomjs_hint = (f'         Install {self._downloader._format_err("PhantomJS", self._downloader.Styles.EMPHASIS)} '
+                                          f'to workaround the issue. {PhantomJSwrapper.INSTALL_HINT}\n')
+                    if player_url:
+                        self.report_warning(
+                            f'nsig extraction failed: You may experience throttling for some formats\n{phantomjs_hint}'
+                            f'         n = {query["n"][0]} ; player = {player_url}', video_id=video_id, only_once=True)
+                        self.write_debug(e, only_once=True)
+                    else:
+                        self.report_warning(
+                            'Cannot decrypt nsig without player_url: You may experience throttling for some formats',
+                            video_id=video_id, only_once=True)
                     throttled = True
 
-            if itag:
-                itags[itag] = 'https'
-                stream_ids.append(stream_id)
-
             tbr = float_or_none(fmt.get('averageBitrate') or fmt.get('bitrate'), 1000)
             language_preference = (
                 10 if audio_track.get('audioIsDefault') and 10
                 else -10 if 'descriptive' in (audio_track.get('displayName') or '').lower() and -10
                 else -1)
             # Some formats may have much smaller duration than others (possibly damaged during encoding)
-            # Eg: 2-nOtRESiUc Ref: https://github.com/yt-dlp/yt-dlp/issues/2823
-            is_damaged = try_get(fmt, lambda x: float(x['approxDurationMs']) < approx_duration - 10000)
+            # E.g. 2-nOtRESiUc Ref: https://github.com/yt-dlp/yt-dlp/issues/2823
+            # Make sure to avoid false positives with small duration differences.
+            # E.g. __2ABJjxzNo, ySuUZEjARPY
+            is_damaged = try_get(fmt, lambda x: float(x['approxDurationMs']) / duration < 500)
+            if is_damaged:
+                self.report_warning(
+                    f'{video_id}: Some formats are possibly damaged. They will be deprioritized', only_once=True)
             dct = {
                 'asr': int_or_none(fmt.get('audioSampleRate')),
                 'filesize': int_or_none(fmt.get('contentLength')),
-                'format_id': itag,
+                'format_id': f'{itag}{"-drc" if fmt.get("isDrc") else ""}',
                 'format_note': join_nonempty(
                     '%s%s' % (audio_track.get('displayName') or '',
                               ' (default)' if language_preference > 0 else ''),
                     fmt.get('qualityLabel') or quality.replace('audio_quality_', ''),
+                    'DRC' if fmt.get('isDrc') else None,
+                    try_get(fmt, lambda x: x['projectionType'].replace('RECTANGULAR', '').lower()),
+                    try_get(fmt, lambda x: x['spatialAudioType'].replace('SPATIAL_AUDIO_TYPE_', '').lower()),
                     throttled and 'THROTTLED', is_damaged and 'DAMAGED', delim=', '),
-                'source_preference': -10 if throttled else -1,
+                # Format 22 is likely to be damaged. See https://github.com/yt-dlp/yt-dlp/issues/3372
+                'source_preference': -10 if throttled else -5 if itag == '22' else -1,
                 'fps': int_or_none(fmt.get('fps')) or None,
+                'audio_channels': fmt.get('audioChannels'),
                 'height': height,
-                'quality': q(quality),
+                'quality': q(quality) - bool(fmt.get('isDrc')) / 2,
+                'has_drm': bool(fmt.get('drmFamilies')),
                 'tbr': tbr,
                 'url': fmt_url,
                 'width': int_or_none(fmt.get('width')),
                 'language': join_nonempty(audio_track.get('id', '').split('.')[0],
-                                          'desc' if language_preference < -1 else ''),
+                                          'desc' if language_preference < -1 else '') or None,
                 'language_preference': language_preference,
-                'preference': -10 if is_damaged else None,
+                # Strictly de-prioritize damaged and 3gp formats
+                'preference': -10 if is_damaged else -2 if itag == '17' else None,
             }
             mime_mobj = re.match(
                 r'((?:[^/]+)/(?:[^;]+))(?:;\s*codecs="([^"]+)")?', fmt.get('mimeType') or '')
@@ -3043,49 +3707,70 @@ def _extract_formats(self, streaming_data, video_id, player_url, is_live):
                 }
                 if dct.get('ext'):
                     dct['container'] = dct['ext'] + '_dash'
+
+            if itag:
+                itags[itag].add(('https', dct.get('language')))
+                stream_ids.append(stream_id)
             yield dct
 
-        live_from_start = is_live and self.get_param('live_from_start')
-        skip_manifests = self._configuration_arg('skip')
-        if not self.get_param('youtube_include_hls_manifest', True):
-            skip_manifests.append('hls')
-        get_dash = 'dash' not in skip_manifests and (
-            not is_live or live_from_start or self._configuration_arg('include_live_dash'))
-        get_hls = not live_from_start and 'hls' not in skip_manifests
+        needs_live_processing = self._needs_live_processing(live_status, duration)
+        skip_bad_formats = not self._configuration_arg('include_incomplete_formats')
+
+        skip_manifests = set(self._configuration_arg('skip'))
+        if (not self.get_param('youtube_include_hls_manifest', True)
+                or needs_live_processing == 'is_live'  # These will be filtered out by YoutubeDL anyway
+                or needs_live_processing and skip_bad_formats):
+            skip_manifests.add('hls')
+
+        if not self.get_param('youtube_include_dash_manifest', True):
+            skip_manifests.add('dash')
+        if self._configuration_arg('include_live_dash'):
+            self._downloader.deprecated_feature('[youtube] include_live_dash extractor argument is deprecated. '
+                                                'Use include_incomplete_formats extractor argument instead')
+        elif skip_bad_formats and live_status == 'is_live' and needs_live_processing != 'is_live':
+            skip_manifests.add('dash')
 
         def process_manifest_format(f, proto, itag):
-            if itag in itags:
-                if itags[itag] == proto or f'{itag}-{proto}' in itags:
-                    return False
-                itag = f'{itag}-{proto}'
-            if itag:
+            key = (proto, f.get('language'))
+            if key in itags[itag]:
+                return False
+            itags[itag].add(key)
+
+            if any(p != proto for p, _ in itags[itag]):
+                f['format_id'] = f'{itag}-{proto}'
+            elif itag:
                 f['format_id'] = itag
-                itags[itag] = proto
 
-            f['quality'] = next((
-                q(qdict[val])
-                for val, qdict in ((f.get('format_id', '').split('-')[0], itag_qualities), (f.get('height'), res_qualities))
-                if val in qdict), -1)
+            f['quality'] = q(itag_qualities.get(try_get(f, lambda f: f['format_id'].split('-')[0]), -1))
+            if f['quality'] == -1 and f.get('height'):
+                f['quality'] = q(res_qualities[min(res_qualities, key=lambda x: abs(x - f['height']))])
             return True
 
+        subtitles = {}
         for sd in streaming_data:
-            hls_manifest_url = get_hls and sd.get('hlsManifestUrl')
+            hls_manifest_url = 'hls' not in skip_manifests and sd.get('hlsManifestUrl')
             if hls_manifest_url:
-                for f in self._extract_m3u8_formats(hls_manifest_url, video_id, 'mp4', fatal=False):
+                fmts, subs = self._extract_m3u8_formats_and_subtitles(
+                    hls_manifest_url, video_id, 'mp4', fatal=False, live=live_status == 'is_live')
+                subtitles = self._merge_subtitles(subs, subtitles)
+                for f in fmts:
                     if process_manifest_format(f, 'hls', self._search_regex(
                             r'/itag/(\d+)', f['url'], 'itag', default=None)):
                         yield f
 
-            dash_manifest_url = get_dash and sd.get('dashManifestUrl')
+            dash_manifest_url = 'dash' not in skip_manifests and sd.get('dashManifestUrl')
             if dash_manifest_url:
-                for f in self._extract_mpd_formats(dash_manifest_url, video_id, fatal=False):
+                formats, subs = self._extract_mpd_formats_and_subtitles(dash_manifest_url, video_id, fatal=False)
+                subtitles = self._merge_subtitles(subs, subtitles)  # Prioritize HLS subs over DASH
+                for f in formats:
                     if process_manifest_format(f, 'dash', f['format_id']):
                         f['filesize'] = int_or_none(self._search_regex(
                             r'/clen/(\d+)', f.get('fragment_base_url') or f['url'], 'file size', default=None))
-                        if live_from_start:
+                        if needs_live_processing:
                             f['is_from_start'] = True
 
                         yield f
+        yield subtitles
 
     def _extract_storyboard(self, player_responses, duration):
         spec = get_first(
@@ -3116,8 +3801,11 @@ def _extract_storyboard(self, player_responses, duration):
                 'url': url,
                 'width': width,
                 'height': height,
+                'fps': frame_count / duration,
+                'rows': rows,
+                'columns': cols,
                 'fragments': [{
-                    'path': url.replace('$M', str(j)),
+                    'url': url.replace('$M', str(j)),
                     'duration': min(fragment_duration, duration - (j * fragment_duration)),
                 } for j in range(math.ceil(fragment_count))],
             }
@@ -3125,27 +3813,38 @@ def _extract_storyboard(self, player_responses, duration):
     def _download_player_responses(self, url, smuggled_data, video_id, webpage_url):
         webpage = None
         if 'webpage' not in self._configuration_arg('player_skip'):
+            query = {'bpctr': '9999999999', 'has_verified': '1'}
+            if smuggled_data.get('is_story'):
+                query['pp'] = self._STORY_PLAYER_PARAMS
             webpage = self._download_webpage(
-                webpage_url + '&bpctr=9999999999&has_verified=1', video_id, fatal=False)
+                webpage_url, video_id, fatal=False, query=query)
 
         master_ytcfg = self.extract_ytcfg(video_id, webpage) or self._get_default_ytcfg()
 
         player_responses, player_url = self._extract_player_responses(
             self._get_requested_clients(url, smuggled_data),
-            video_id, webpage, master_ytcfg)
+            video_id, webpage, master_ytcfg, smuggled_data)
 
         return webpage, master_ytcfg, player_responses, player_url
 
-    def _list_formats(self, video_id, microformats, video_details, player_responses, player_url):
+    def _list_formats(self, video_id, microformats, video_details, player_responses, player_url, duration=None):
         live_broadcast_details = traverse_obj(microformats, (..., 'liveBroadcastDetails'))
         is_live = get_first(video_details, 'isLive')
         if is_live is None:
             is_live = get_first(live_broadcast_details, 'isLiveNow')
-
+        live_content = get_first(video_details, 'isLiveContent')
+        is_upcoming = get_first(video_details, 'isUpcoming')
+        post_live = get_first(video_details, 'isPostLiveDvr')
+        live_status = ('post_live' if post_live
+                       else 'is_live' if is_live
+                       else 'is_upcoming' if is_upcoming
+                       else 'was_live' if live_content
+                       else 'not_live' if False in (is_live, live_content)
+                       else None)
         streaming_data = traverse_obj(player_responses, (..., 'streamingData'), default=[])
-        formats = list(self._extract_formats(streaming_data, video_id, player_url, is_live))
+        *formats, subtitles = self._extract_formats_and_subtitles(streaming_data, video_id, player_url, live_status, duration)
 
-        return live_broadcast_details, is_live, streaming_data, formats
+        return live_broadcast_details, live_status, streaming_data, formats, subtitles
 
     def _real_extract(self, url):
         url, smuggled_data = unsmuggle_url(url, {})
@@ -3175,11 +3874,19 @@ def _real_extract(self, url):
         microformats = traverse_obj(
             player_responses, (..., 'microformat', 'playerMicroformatRenderer'),
             expected_type=dict, default=[])
-        video_title = (
-            get_first(video_details, 'title')
-            or self._get_text(microformats, (..., 'title'))
-            or search_meta(['og:title', 'twitter:title', 'title']))
-        video_description = get_first(video_details, 'shortDescription')
+
+        translated_title = self._get_text(microformats, (..., 'title'))
+        video_title = (self._preferred_lang and translated_title
+                       or get_first(video_details, 'title')  # primary
+                       or translated_title
+                       or search_meta(['og:title', 'twitter:title', 'title']))
+        translated_description = self._get_text(microformats, (..., 'description'))
+        original_description = get_first(video_details, 'shortDescription')
+        video_description = (
+            self._preferred_lang and translated_description
+            # If original description is blank, it will be an empty string.
+            # Do not prefer translated description in this case.
+            or original_description if original_description is not None else translated_description)
 
         multifeed_metadata_list = get_first(
             player_responses,
@@ -3195,12 +3902,12 @@ def _real_extract(self, url):
                     # Unquote should take place before split on comma (,) since textual
                     # fields may contain comma as well (see
                     # https://github.com/ytdl-org/youtube-dl/issues/8536)
-                    feed_data = compat_parse_qs(
-                        compat_urllib_parse_unquote_plus(feed))
+                    feed_data = urllib.parse.parse_qs(
+                        urllib.parse.unquote_plus(feed))
 
                     def feed_entry(name):
                         return try_get(
-                            feed_data, lambda x: x[name][0], compat_str)
+                            feed_data, lambda x: x[name][0], str)
 
                     feed_id = feed_entry('id')
                     if not feed_id:
@@ -3224,7 +3931,14 @@ def feed_entry(name):
                 return self.playlist_result(
                     entries, video_id, video_title, video_description)
 
-        live_broadcast_details, is_live, streaming_data, formats = self._list_formats(video_id, microformats, video_details, player_responses, player_url)
+        duration = (int_or_none(get_first(video_details, 'lengthSeconds'))
+                    or int_or_none(get_first(microformats, 'lengthSeconds'))
+                    or parse_duration(search_meta('duration')) or None)
+
+        live_broadcast_details, live_status, streaming_data, formats, automatic_captions = \
+            self._list_formats(video_id, microformats, video_details, player_responses, player_url, duration)
+        if live_status == 'post_live':
+            self.write_debug(f'{video_id}: Video is in Post-Live Manifestless mode')
 
         if not formats:
             if not self.get_param('allow_unplayable_formats') and traverse_obj(streaming_data, (..., 'licenseInfos')):
@@ -3271,19 +3985,19 @@ def feed_entry(name):
         original_thumbnails = thumbnails.copy()
 
         # The best resolution thumbnails sometimes does not appear in the webpage
-        # See: https://github.com/ytdl-org/youtube-dl/issues/29049, https://github.com/yt-dlp/yt-dlp/issues/340
+        # See: https://github.com/yt-dlp/yt-dlp/issues/340
         # List of possible thumbnails - Ref: <https://stackoverflow.com/a/20542029>
         thumbnail_names = [
-            'maxresdefault', 'hq720', 'sddefault', 'sd1', 'sd2', 'sd3',
-            'hqdefault', 'hq1', 'hq2', 'hq3', '0',
-            'mqdefault', 'mq1', 'mq2', 'mq3',
-            'default', '1', '2', '3'
+            # While the *1,*2,*3 thumbnails are just below their corresponding "*default" variants
+            # in resolution, these are not the custom thumbnail. So de-prioritize them
+            'maxresdefault', 'hq720', 'sddefault', 'hqdefault', '0', 'mqdefault', 'default',
+            'sd1', 'sd2', 'sd3', 'hq1', 'hq2', 'hq3', 'mq1', 'mq2', 'mq3', '1', '2', '3'
         ]
         n_thumbnail_names = len(thumbnail_names)
         thumbnails.extend({
             'url': 'https://i.ytimg.com/vi{webp}/{video_id}/{name}{live}.{ext}'.format(
                 video_id=video_id, name=name, ext=ext,
-                webp='_webp' if ext == 'webp' else '', live='_live' if is_live else ''),
+                webp='_webp' if ext == 'webp' else '', live='_live' if live_status == 'is_live' else ''),
         } for name in thumbnail_names for ext in ('webp', 'jpg'))
         for thumb in thumbnails:
             i = next((i for i, t in enumerate(thumbnail_names) if f'/{video_id}/{t}' in thumb['url']), n_thumbnail_names)
@@ -3296,32 +4010,31 @@ def feed_entry(name):
             get_first(video_details, 'channelId')
             or get_first(microformats, 'externalChannelId')
             or search_meta('channelId'))
-        duration = int_or_none(
-            get_first(video_details, 'lengthSeconds')
-            or get_first(microformats, 'lengthSeconds')
-            or parse_duration(search_meta('duration'))) or None
         owner_profile_url = get_first(microformats, 'ownerProfileUrl')
 
-        live_content = get_first(video_details, 'isLiveContent')
-        is_upcoming = get_first(video_details, 'isUpcoming')
-        if is_live is None:
-            if is_upcoming or live_content is False:
-                is_live = False
-        if is_upcoming is None and (live_content or is_live):
-            is_upcoming = False
         live_start_time = parse_iso8601(get_first(live_broadcast_details, 'startTimestamp'))
         live_end_time = parse_iso8601(get_first(live_broadcast_details, 'endTimestamp'))
         if not duration and live_end_time and live_start_time:
             duration = live_end_time - live_start_time
 
-        if is_live and self.get_param('live_from_start'):
-            self._prepare_live_from_start_formats(formats, video_id, live_start_time, url, webpage_url, smuggled_data)
+        needs_live_processing = self._needs_live_processing(live_status, duration)
 
-        formats.extend(self._extract_storyboard(player_responses, duration))
+        def is_bad_format(fmt):
+            if needs_live_processing and not fmt.get('is_from_start'):
+                return True
+            elif (live_status == 'is_live' and needs_live_processing != 'is_live'
+                    and fmt.get('protocol') == 'http_dash_segments'):
+                return True
+
+        for fmt in filter(is_bad_format, formats):
+            fmt['preference'] = (fmt.get('preference') or -1) - 10
+            fmt['format_note'] = join_nonempty(fmt.get('format_note'), '(Last 4 hours)', delim=' ')
 
-        # Source is given priority since formats that throttle are given lower source_preference
-        # When throttling issue is fully fixed, remove this
-        self._sort_formats(formats, ('quality', 'res', 'fps', 'hdr:12', 'source', 'codec:vp9.2', 'lang', 'proto'))
+        if needs_live_processing:
+            self._prepare_live_from_start_formats(
+                formats, video_id, live_start_time, url, webpage_url, smuggled_data, live_status == 'is_live')
+
+        formats.extend(self._extract_storyboard(player_responses, duration))
 
         info = {
             'id': video_id,
@@ -3332,14 +4045,11 @@ def feed_entry(name):
             # URL checking if user don't care about getting the best possible thumbnail
             'thumbnail': traverse_obj(original_thumbnails, (-1, 'url')),
             'description': video_description,
-            'upload_date': unified_strdate(
-                get_first(microformats, 'uploadDate')
-                or search_meta('uploadDate')),
             'uploader': get_first(video_details, 'author'),
             'uploader_id': self._search_regex(r'/(?:channel|user)/([^/?&#]+)', owner_profile_url, 'uploader id') if owner_profile_url else None,
             'uploader_url': owner_profile_url,
             'channel_id': channel_id,
-            'channel_url': format_field(channel_id, template='https://www.youtube.com/channel/%s'),
+            'channel_url': format_field(channel_id, None, 'https://www.youtube.com/channel/%s'),
             'duration': duration,
             'view_count': int_or_none(
                 get_first((video_details, microformats), (..., 'viewCount'))
@@ -3353,14 +4063,13 @@ def feed_entry(name):
             'categories': [category] if category else None,
             'tags': keywords,
             'playable_in_embed': get_first(playability_statuses, 'playableInEmbed'),
-            'is_live': is_live,
-            'was_live': (False if is_live or is_upcoming or live_content is False
-                         else None if is_live is None or is_upcoming is None
-                         else live_content),
-            'live_status': 'is_upcoming' if is_upcoming else None,  # rest will be set by YoutubeDL
+            'live_status': live_status,
             'release_timestamp': live_start_time,
+            '_format_sort_fields': (  # source_preference is lower for throttled/potentially damaged formats
+                'quality', 'res', 'fps', 'hdr:12', 'source', 'vcodec:vp9.2', 'channels', 'acodec', 'lang', 'proto')
         }
 
+        subtitles = {}
         pctr = traverse_obj(player_responses, (..., 'captions', 'playerCaptionsTracklistRenderer'), expected_type=dict)
         if pctr:
             def get_lang_code(track):
@@ -3387,9 +4096,12 @@ def process_language(container, base_url, lang_code, sub_name, query):
                         'name': sub_name,
                     })
 
-            subtitles, automatic_captions = {}, {}
+            # NB: Constructing the full subtitle dictionary is slow
+            get_translated_subs = 'translated_subs' not in self._configuration_arg('skip') and (
+                self.get_param('writeautomaticsub', False) or self.get_param('listsubtitles'))
             for lang_code, caption_track in captions.items():
                 base_url = caption_track.get('baseUrl')
+                orig_lang = parse_qs(base_url).get('lang', [None])[-1]
                 if not base_url:
                     continue
                 lang_name = self._get_text(caption_track, 'name', max_runs=1)
@@ -3403,20 +4115,27 @@ def process_language(container, base_url, lang_code, sub_name, query):
                 for trans_code, trans_name in translation_languages.items():
                     if not trans_code:
                         continue
-                    if caption_track.get('kind') != 'asr':
+                    orig_trans_code = trans_code
+                    if caption_track.get('kind') != 'asr' and trans_code != 'und':
+                        if not get_translated_subs:
+                            continue
                         trans_code += f'-{lang_code}'
-                        trans_name += format_field(lang_name, template=' from %s')
-                    process_language(
-                        automatic_captions, base_url, trans_code, trans_name, {'tlang': trans_code})
-                    if lang_code == f'a-{trans_code}':
+                        trans_name += format_field(lang_name, None, ' from %s')
+                    # Add an "-orig" label to the original language so that it can be distinguished.
+                    # The subs are returned without "-orig" as well for compatibility
+                    if lang_code == f'a-{orig_trans_code}':
                         process_language(
-                            automatic_captions, base_url, f'{trans_code}-orig', f'{trans_name} (Original)', {'tlang': trans_code})
-            info['automatic_captions'] = automatic_captions
-            info['subtitles'] = subtitles
+                            automatic_captions, base_url, f'{trans_code}-orig', f'{trans_name} (Original)', {})
+                    # Setting tlang=lang returns damaged subtitles.
+                    process_language(automatic_captions, base_url, trans_code, trans_name,
+                                     {} if orig_lang == orig_trans_code else {'tlang': trans_code})
+
+        info['automatic_captions'] = automatic_captions
+        info['subtitles'] = subtitles
 
-        parsed_url = compat_urllib_parse_urlparse(url)
+        parsed_url = urllib.parse.urlparse(url)
         for component in [parsed_url.fragment, parsed_url.query]:
-            query = compat_parse_qs(component)
+            query = urllib.parse.parse_qs(component)
             for k, v in query.items():
                 for d_k, s_ks in [('start', ('start', 't')), ('end', ('end',))]:
                     d_k += '_time'
@@ -3425,7 +4144,15 @@ def process_language(container, base_url, lang_code, sub_name, query):
 
         # Youtube Music Auto-generated description
         if video_description:
-            mobj = re.search(r'(?s)(?P<track>[^·\n]+)·(?P<artist>[^\n]+)\n+(?P<album>[^\n]+)(?:.+?℗\s*(?P<release_year>\d{4})(?!\d))?(?:.+?Released on\s*:\s*(?P<release_date>\d{4}-\d{2}-\d{2}))?(.+?\nArtist\s*:\s*(?P<clean_artist>[^\n]+))?.+\nAuto-generated by YouTube\.\s*$', video_description)
+            mobj = re.search(
+                r'''(?xs)
+                    (?P<track>[^·\n]+)·(?P<artist>[^\n]+)\n+
+                    (?P<album>[^\n]+)
+                    (?:.+?℗\s*(?P<release_year>\d{4})(?!\d))?
+                    (?:.+?Released on\s*:\s*(?P<release_date>\d{4}-\d{2}-\d{2}))?
+                    (.+?\nArtist\s*:\s*(?P<clean_artist>[^\n]+))?
+                    .+\nAuto-generated\ by\ YouTube\.\s*$
+                ''', video_description)
             if mobj:
                 release_year = mobj.group('release_year')
                 release_date = mobj.group('release_date')
@@ -3443,9 +4170,7 @@ def process_language(container, base_url, lang_code, sub_name, query):
 
         initial_data = None
         if webpage:
-            initial_data = self._extract_yt_initial_variable(
-                webpage, self._YT_INITIAL_DATA_RE, video_id,
-                'yt initial data')
+            initial_data = self.extract_yt_initial_data(video_id, webpage, fatal=False)
         if not initial_data:
             query = {'videoId': video_id}
             query.update(self._get_checkok_params())
@@ -3455,109 +4180,148 @@ def process_language(container, base_url, lang_code, sub_name, query):
                 headers=self.generate_api_headers(ytcfg=master_ytcfg),
                 note='Downloading initial data API JSON')
 
-        try:
-            # This will error if there is no livechat
+        info['comment_count'] = traverse_obj(initial_data, (
+            'contents', 'twoColumnWatchNextResults', 'results', 'results', 'contents', ..., 'itemSectionRenderer',
+            'contents', ..., 'commentsEntryPointHeaderRenderer', 'commentCount', 'simpleText'
+        ), (
+            'engagementPanels', lambda _, v: v['engagementPanelSectionListRenderer']['panelIdentifier'] == 'comment-item-section',
+            'engagementPanelSectionListRenderer', 'header', 'engagementPanelTitleHeaderRenderer', 'contextualInfo', 'runs', ..., 'text'
+        ), expected_type=int_or_none, get_all=False)
+
+        try:  # This will error if there is no livechat
             initial_data['contents']['twoColumnWatchNextResults']['conversationBar']['liveChatRenderer']['continuations'][0]['reloadContinuationData']['continuation']
+        except (KeyError, IndexError, TypeError):
+            pass
+        else:
             info.setdefault('subtitles', {})['live_chat'] = [{
-                'url': 'https://www.youtube.com/watch?v=%s' % video_id,  # url is needed to set cookies
+                # url is needed to set cookies
+                'url': f'https://www.youtube.com/watch?v={video_id}&bpctr=9999999999&has_verified=1',
                 'video_id': video_id,
                 'ext': 'json',
-                'protocol': 'youtube_live_chat' if is_live or is_upcoming else 'youtube_live_chat_replay',
+                'protocol': ('youtube_live_chat' if live_status in ('is_live', 'is_upcoming')
+                             else 'youtube_live_chat_replay'),
             }]
-        except (KeyError, IndexError, TypeError):
-            pass
 
         if initial_data:
             info['chapters'] = (
                 self._extract_chapters_from_json(initial_data, duration)
                 or self._extract_chapters_from_engagement_panel(initial_data, duration)
+                or self._extract_chapters_from_description(video_description, duration)
                 or None)
 
-            contents = try_get(
-                initial_data,
-                lambda x: x['contents']['twoColumnWatchNextResults']['results']['results']['contents'],
-                list) or []
-            for content in contents:
-                vpir = content.get('videoPrimaryInfoRenderer')
-                if vpir:
-                    stl = vpir.get('superTitleLink')
-                    if stl:
-                        stl = self._get_text(stl)
-                        if try_get(
-                                vpir,
-                                lambda x: x['superTitleIcon']['iconType']) == 'LOCATION_PIN':
-                            info['location'] = stl
-                        else:
-                            mobj = re.search(r'(.+?)\s*S(\d+)\s*•\s*E(\d+)', stl)
-                            if mobj:
-                                info.update({
-                                    'series': mobj.group(1),
-                                    'season_number': int(mobj.group(2)),
-                                    'episode_number': int(mobj.group(3)),
-                                })
-                    for tlb in (try_get(
-                            vpir,
-                            lambda x: x['videoActions']['menuRenderer']['topLevelButtons'],
-                            list) or []):
-                        tbr = tlb.get('toggleButtonRenderer') or {}
-                        for getter, regex in [(
-                                lambda x: x['defaultText']['accessibility']['accessibilityData'],
-                                r'(?P<count>[\d,]+)\s*(?P<type>(?:dis)?like)'), ([
-                                    lambda x: x['accessibility'],
-                                    lambda x: x['accessibilityData']['accessibilityData'],
-                                ], r'(?P<type>(?:dis)?like) this video along with (?P<count>[\d,]+) other people')]:
-                            label = (try_get(tbr, getter, dict) or {}).get('label')
-                            if label:
-                                mobj = re.match(regex, label)
-                                if mobj:
-                                    info[mobj.group('type') + '_count'] = str_to_int(mobj.group('count'))
-                                    break
-                    sbr_tooltip = try_get(
-                        vpir, lambda x: x['sentimentBar']['sentimentBarRenderer']['tooltip'])
-                    if sbr_tooltip:
-                        like_count, dislike_count = sbr_tooltip.split(' / ')
+        contents = traverse_obj(
+            initial_data, ('contents', 'twoColumnWatchNextResults', 'results', 'results', 'contents'),
+            expected_type=list, default=[])
+
+        vpir = get_first(contents, 'videoPrimaryInfoRenderer')
+        if vpir:
+            stl = vpir.get('superTitleLink')
+            if stl:
+                stl = self._get_text(stl)
+                if try_get(
+                        vpir,
+                        lambda x: x['superTitleIcon']['iconType']) == 'LOCATION_PIN':
+                    info['location'] = stl
+                else:
+                    mobj = re.search(r'(.+?)\s*S(\d+)\s*•?\s*E(\d+)', stl)
+                    if mobj:
                         info.update({
-                            'like_count': str_to_int(like_count),
-                            'dislike_count': str_to_int(dislike_count),
+                            'series': mobj.group(1),
+                            'season_number': int(mobj.group(2)),
+                            'episode_number': int(mobj.group(3)),
                         })
-                vsir = content.get('videoSecondaryInfoRenderer')
-                if vsir:
-                    vor = traverse_obj(vsir, ('owner', 'videoOwnerRenderer'))
-                    info.update({
-                        'channel': self._get_text(vor, 'title'),
-                        'channel_follower_count': self._get_count(vor, 'subscriberCountText')})
-
-                    rows = try_get(
-                        vsir,
-                        lambda x: x['metadataRowContainer']['metadataRowContainerRenderer']['rows'],
-                        list) or []
-                    multiple_songs = False
-                    for row in rows:
-                        if try_get(row, lambda x: x['metadataRowRenderer']['hasDividerLine']) is True:
-                            multiple_songs = True
-                            break
-                    for row in rows:
-                        mrr = row.get('metadataRowRenderer') or {}
-                        mrr_title = mrr.get('title')
-                        if not mrr_title:
-                            continue
-                        mrr_title = self._get_text(mrr, 'title')
-                        mrr_contents_text = self._get_text(mrr, ('contents', 0))
-                        if mrr_title == 'License':
-                            info['license'] = mrr_contents_text
-                        elif not multiple_songs:
-                            if mrr_title == 'Album':
-                                info['album'] = mrr_contents_text
-                            elif mrr_title == 'Artist':
-                                info['artist'] = mrr_contents_text
-                            elif mrr_title == 'Song':
-                                info['track'] = mrr_contents_text
+            for tlb in (try_get(
+                    vpir,
+                    lambda x: x['videoActions']['menuRenderer']['topLevelButtons'],
+                    list) or []):
+                tbrs = variadic(
+                    traverse_obj(
+                        tlb, 'toggleButtonRenderer',
+                        ('segmentedLikeDislikeButtonRenderer', ..., 'toggleButtonRenderer'),
+                        default=[]))
+                for tbr in tbrs:
+                    for getter, regex in [(
+                            lambda x: x['defaultText']['accessibility']['accessibilityData'],
+                            r'(?P<count>[\d,]+)\s*(?P<type>(?:dis)?like)'), ([
+                                lambda x: x['accessibility'],
+                                lambda x: x['accessibilityData']['accessibilityData'],
+                            ], r'(?P<type>(?:dis)?like) this video along with (?P<count>[\d,]+) other people')]:
+                        label = (try_get(tbr, getter, dict) or {}).get('label')
+                        if label:
+                            mobj = re.match(regex, label)
+                            if mobj:
+                                info[mobj.group('type') + '_count'] = str_to_int(mobj.group('count'))
+                                break
+            sbr_tooltip = try_get(
+                vpir, lambda x: x['sentimentBar']['sentimentBarRenderer']['tooltip'])
+            if sbr_tooltip:
+                like_count, dislike_count = sbr_tooltip.split(' / ')
+                info.update({
+                    'like_count': str_to_int(like_count),
+                    'dislike_count': str_to_int(dislike_count),
+                })
+            vcr = traverse_obj(vpir, ('viewCount', 'videoViewCountRenderer'))
+            if vcr:
+                vc = self._get_count(vcr, 'viewCount')
+                # Upcoming premieres with waiting count are treated as live here
+                if vcr.get('isLive'):
+                    info['concurrent_view_count'] = vc
+                elif info.get('view_count') is None:
+                    info['view_count'] = vc
+
+        vsir = get_first(contents, 'videoSecondaryInfoRenderer')
+        if vsir:
+            vor = traverse_obj(vsir, ('owner', 'videoOwnerRenderer'))
+            info.update({
+                'channel': self._get_text(vor, 'title'),
+                'channel_follower_count': self._get_count(vor, 'subscriberCountText')})
+
+            rows = try_get(
+                vsir,
+                lambda x: x['metadataRowContainer']['metadataRowContainerRenderer']['rows'],
+                list) or []
+            multiple_songs = False
+            for row in rows:
+                if try_get(row, lambda x: x['metadataRowRenderer']['hasDividerLine']) is True:
+                    multiple_songs = True
+                    break
+            for row in rows:
+                mrr = row.get('metadataRowRenderer') or {}
+                mrr_title = mrr.get('title')
+                if not mrr_title:
+                    continue
+                mrr_title = self._get_text(mrr, 'title')
+                mrr_contents_text = self._get_text(mrr, ('contents', 0))
+                if mrr_title == 'License':
+                    info['license'] = mrr_contents_text
+                elif not multiple_songs:
+                    if mrr_title == 'Album':
+                        info['album'] = mrr_contents_text
+                    elif mrr_title == 'Artist':
+                        info['artist'] = mrr_contents_text
+                    elif mrr_title == 'Song':
+                        info['track'] = mrr_contents_text
 
         fallbacks = {
             'channel': 'uploader',
             'channel_id': 'uploader_id',
             'channel_url': 'uploader_url',
         }
+
+        # The upload date for scheduled, live and past live streams / premieres in microformats
+        # may be different from the stream date. Although not in UTC, we will prefer it in this case.
+        # See: https://github.com/yt-dlp/yt-dlp/pull/2223#issuecomment-1008485139
+        upload_date = (
+            unified_strdate(get_first(microformats, 'uploadDate'))
+            or unified_strdate(search_meta('uploadDate')))
+        if not upload_date or (
+            live_status in ('not_live', None)
+            and 'no-youtube-prefer-utc-upload-date' not in self.get_param('compat_opts', [])
+        ):
+            upload_date = strftime_or_none(
+                self._parse_time_text(self._get_text(vpir, 'dateText')), '%Y%m%d') or upload_date
+        info['upload_date'] = upload_date
+
         for to, frm in fallbacks.items():
             if not info.get(to):
                 info[to] = info.get(frm)
@@ -3567,33 +4331,25 @@ def process_language(container, base_url, lang_code, sub_name, query):
             if v:
                 info[d_k] = v
 
-        is_private = get_first(video_details, 'isPrivate', expected_type=bool)
-        is_unlisted = get_first(microformats, 'isUnlisted', expected_type=bool)
-        is_membersonly = None
-        is_premium = None
-        if initial_data and is_private is not None:
-            is_membersonly = False
-            is_premium = False
-            contents = try_get(initial_data, lambda x: x['contents']['twoColumnWatchNextResults']['results']['results']['contents'], list) or []
-            badge_labels = set()
-            for content in contents:
-                if not isinstance(content, dict):
-                    continue
-                badge_labels.update(self._extract_badges(content.get('videoPrimaryInfoRenderer')))
-            for badge_label in badge_labels:
-                if badge_label.lower() == 'members only':
-                    is_membersonly = True
-                elif badge_label.lower() == 'premium':
-                    is_premium = True
-                elif badge_label.lower() == 'unlisted':
-                    is_unlisted = True
-
-        info['availability'] = self._availability(
-            is_private=is_private,
-            needs_premium=is_premium,
-            needs_subscription=is_membersonly,
-            needs_auth=info['age_limit'] >= 18,
-            is_unlisted=None if is_private is None else is_unlisted)
+        badges = self._extract_badges(traverse_obj(contents, (..., 'videoPrimaryInfoRenderer'), get_all=False))
+
+        is_private = (self._has_badge(badges, BadgeType.AVAILABILITY_PRIVATE)
+                      or get_first(video_details, 'isPrivate', expected_type=bool))
+
+        info['availability'] = (
+            'public' if self._has_badge(badges, BadgeType.AVAILABILITY_PUBLIC)
+            else self._availability(
+                is_private=is_private,
+                needs_premium=(
+                    self._has_badge(badges, BadgeType.AVAILABILITY_PREMIUM)
+                    or False if initial_data and is_private is not None else None),
+                needs_subscription=(
+                    self._has_badge(badges, BadgeType.AVAILABILITY_SUBSCRIPTION)
+                    or False if initial_data and is_private is not None else None),
+                needs_auth=info['age_limit'] >= 18,
+                is_unlisted=None if is_private is None else (
+                    self._has_badge(badges, BadgeType.AVAILABILITY_UNLISTED)
+                    or get_first(microformats, 'isUnlisted', expected_type=bool))))
 
         info['__post_extractor'] = self.extract_comments(master_ytcfg, video_id, contents, webpage)
 
@@ -3603,15 +4359,19 @@ def process_language(container, base_url, lang_code, sub_name, query):
 
 
 class YoutubeTabBaseInfoExtractor(YoutubeBaseInfoExtractor):
-
     @staticmethod
     def passthrough_smuggled_data(func):
-        def _smuggle(entries, smuggled_data):
-            for entry in entries:
-                # TODO: Convert URL to music.youtube instead.
-                # Do we need to passthrough any other smuggled_data?
-                entry['url'] = smuggle_url(entry['url'], smuggled_data)
-                yield entry
+        def _smuggle(info, smuggled_data):
+            if info.get('_type') not in ('url', 'url_transparent'):
+                return info
+            if smuggled_data.get('is_music_url'):
+                parsed_url = urllib.parse.urlparse(info['url'])
+                if parsed_url.netloc in ('www.youtube.com', 'music.youtube.com'):
+                    smuggled_data.pop('is_music_url')
+                    info['url'] = urllib.parse.urlunparse(parsed_url._replace(netloc='music.youtube.com'))
+            if smuggled_data:
+                info['url'] = smuggle_url(info['url'], smuggled_data)
+            return info
 
         @functools.wraps(func)
         def wrapper(self, url):
@@ -3619,8 +4379,10 @@ def wrapper(self, url):
             if self.is_music_url(url):
                 smuggled_data['is_music_url'] = True
             info_dict = func(self, url, smuggled_data)
-            if smuggled_data and info_dict.get('entries'):
-                info_dict['entries'] = _smuggle(info_dict['entries'], smuggled_data)
+            if smuggled_data:
+                _smuggle(info_dict, smuggled_data)
+                if info_dict.get('entries'):
+                    info_dict['entries'] = (_smuggle(i, smuggled_data.copy()) for i in info_dict['entries'])
             return info_dict
         return wrapper
 
@@ -3641,7 +4403,7 @@ def _extract_channel_id(self, webpage):
     def _extract_basic_item_renderer(item):
         # Modified from _extract_grid_item_renderer
         known_basic_renderers = (
-            'playlistRenderer', 'videoRenderer', 'channelRenderer', 'showRenderer'
+            'playlistRenderer', 'videoRenderer', 'channelRenderer', 'showRenderer', 'reelItemRenderer'
         )
         for key, renderer in item.items():
             if not isinstance(renderer, dict):
@@ -3651,6 +4413,25 @@ def _extract_basic_item_renderer(item):
             elif key.startswith('grid') and key.endswith('Renderer'):
                 return renderer
 
+    def _extract_channel_renderer(self, renderer):
+        channel_id = renderer['channelId']
+        title = self._get_text(renderer, 'title')
+        channel_url = f'https://www.youtube.com/channel/{channel_id}'
+        return {
+            '_type': 'url',
+            'url': channel_url,
+            'id': channel_id,
+            'ie_key': YoutubeTabIE.ie_key(),
+            'channel': title,
+            'channel_id': channel_id,
+            'channel_url': channel_url,
+            'title': title,
+            'channel_follower_count': self._get_count(renderer, 'subscriberCountText'),
+            'thumbnails': self._extract_thumbnails(renderer, 'thumbnail'),
+            'playlist_count': self._get_count(renderer, 'videoCountText'),
+            'description': self._get_text(renderer, 'descriptionSnippet'),
+        }
+
     def _grid_entries(self, grid_renderer):
         for item in grid_renderer['items']:
             if not isinstance(item, dict):
@@ -3676,14 +4457,12 @@ def _grid_entries(self, grid_renderer):
             # channel
             channel_id = renderer.get('channelId')
             if channel_id:
-                yield self.url_result(
-                    'https://www.youtube.com/channel/%s' % channel_id,
-                    ie=YoutubeTabIE.ie_key(), video_title=title)
+                yield self._extract_channel_renderer(renderer)
                 continue
             # generic endpoint URL support
             ep_url = urljoin('https://www.youtube.com/', try_get(
                 renderer, lambda x: x['navigationEndpoint']['commandMetadata']['webCommandMetadata']['url'],
-                compat_str))
+                str))
             if ep_url:
                 for ie in (YoutubeTabIE, YoutubePlaylistIE, YoutubeIE):
                     if ie.suitable(ep_url):
@@ -3718,8 +4497,7 @@ def _shelf_entries_from_content(self, shelf_renderer):
             # TODO: add support for nested playlists so each shelf is processed
             # as separate playlist
             # TODO: this includes only first N items
-            for entry in self._grid_entries(renderer):
-                yield entry
+            yield from self._grid_entries(renderer)
         renderer = content.get('horizontalListRenderer')
         if renderer:
             # TODO
@@ -3728,7 +4506,7 @@ def _shelf_entries_from_content(self, shelf_renderer):
     def _shelf_entries(self, shelf_renderer, skip_channels=False):
         ep = try_get(
             shelf_renderer, lambda x: x['endpoint']['commandMetadata']['webCommandMetadata']['url'],
-            compat_str)
+            str)
         shelf_url = urljoin('https://www.youtube.com', ep)
         if shelf_url:
             # Skipping links to another channels, note that checking for
@@ -3739,8 +4517,7 @@ def _shelf_entries(self, shelf_renderer, skip_channels=False):
             title = self._get_text(shelf_renderer, 'title')
             yield self.url_result(shelf_url, video_title=title)
         # Shelf may not contain shelf URL, fallback to extraction from content
-        for entry in self._shelf_entries_from_content(shelf_renderer):
-            yield entry
+        yield from self._shelf_entries_from_content(shelf_renderer)
 
     def _playlist_entries(self, video_list_renderer):
         for content in video_list_renderer['contents']:
@@ -3755,8 +4532,8 @@ def _playlist_entries(self, video_list_renderer):
             yield self._extract_video(renderer)
 
     def _rich_entries(self, rich_grid_renderer):
-        renderer = try_get(
-            rich_grid_renderer, lambda x: x['content']['videoRenderer'], dict) or {}
+        renderer = traverse_obj(
+            rich_grid_renderer, ('content', ('videoRenderer', 'reelItemRenderer')), get_all=False) or {}
         video_id = renderer.get('videoId')
         if not video_id:
             return
@@ -3767,6 +4544,13 @@ def _video_entry(self, video_renderer):
         if video_id:
             return self._extract_video(video_renderer)
 
+    def _hashtag_tile_entry(self, hashtag_tile_renderer):
+        url = urljoin('https://youtube.com', traverse_obj(
+            hashtag_tile_renderer, ('onTapCommand', 'commandMetadata', 'webCommandMetadata', 'url')))
+        if url:
+            return self.url_result(
+                url, ie=YoutubeTabIE.ie_key(), title=self._get_text(hashtag_tile_renderer, 'hashtag'))
+
     def _post_thread_entries(self, post_thread_renderer):
         post_renderer = try_get(
             post_thread_renderer, lambda x: x['post']['backstagePostRenderer'], dict)
@@ -3782,7 +4566,7 @@ def _post_thread_entries(self, post_thread_renderer):
                 yield entry
         # playlist attachment
         playlist_id = try_get(
-            post_renderer, lambda x: x['backstageAttachment']['playlistRenderer']['playlistId'], compat_str)
+            post_renderer, lambda x: x['backstageAttachment']['playlistRenderer']['playlistId'], str)
         if playlist_id:
             yield self.url_result(
                 'https://www.youtube.com/playlist?list=%s' % playlist_id,
@@ -3793,7 +4577,7 @@ def _post_thread_entries(self, post_thread_renderer):
             if not isinstance(run, dict):
                 continue
             ep_url = try_get(
-                run, lambda x: x['navigationEndpoint']['urlEndpoint']['url'], compat_str)
+                run, lambda x: x['navigationEndpoint']['urlEndpoint']['url'], str)
             if not ep_url:
                 continue
             if not YoutubeIE.suitable(ep_url):
@@ -3809,10 +4593,12 @@ def _post_thread_continuation_entries(self, post_thread_continuation):
             return
         for content in contents:
             renderer = content.get('backstagePostThreadRenderer')
-            if not isinstance(renderer, dict):
+            if isinstance(renderer, dict):
+                yield from self._post_thread_entries(renderer)
                 continue
-            for entry in self._post_thread_entries(renderer):
-                yield entry
+            renderer = content.get('videoRenderer')
+            if isinstance(renderer, dict):
+                yield self._video_entry(renderer)
 
     r''' # unused
     def _rich_grid_entries(self, contents):
@@ -3823,6 +4609,14 @@ def _rich_grid_entries(self, contents):
                 if entry:
                     yield entry
     '''
+
+    def _report_history_entries(self, renderer):
+        for url in traverse_obj(renderer, (
+                'rows', ..., 'reportHistoryTableRowRenderer', 'cells', ...,
+                'reportHistoryTableCellRenderer', 'cell', 'reportHistoryTableTextCellRenderer', 'text', 'runs', ...,
+                'navigationEndpoint', 'commandMetadata', 'webCommandMetadata', 'url')):
+            yield self.url_result(urljoin('https://www.youtube.com', url), YoutubeIE)
+
     def _extract_entries(self, parent_renderer, continuation_list):
         # continuation_list is modified in-place with continuation_list = [continuation_token]
         continuation_list[:] = [None]
@@ -3834,12 +4628,16 @@ def _extract_entries(self, parent_renderer, continuation_list):
                 content, 'itemSectionRenderer', 'musicShelfRenderer', 'musicShelfContinuation',
                 expected_type=dict)
             if not is_renderer:
-                renderer = content.get('richItemRenderer')
-                if renderer:
-                    for entry in self._rich_entries(renderer):
+                if content.get('richItemRenderer'):
+                    for entry in self._rich_entries(content['richItemRenderer']):
                         yield entry
                     continuation_list[0] = self._extract_continuation(parent_renderer)
+                elif content.get('reportHistorySectionRenderer'):  # https://www.youtube.com/reporthistory
+                    table = traverse_obj(content, ('reportHistorySectionRenderer', 'table', 'tableRenderer'))
+                    yield from self._report_history_entries(table)
+                    continuation_list[0] = self._extract_continuation(table)
                 continue
+
             isr_contents = try_get(is_renderer, lambda x: x['contents'], list) or []
             for isr_content in isr_contents:
                 if not isinstance(isr_content, dict):
@@ -3848,12 +4646,14 @@ def _extract_entries(self, parent_renderer, continuation_list):
                 known_renderers = {
                     'playlistVideoListRenderer': self._playlist_entries,
                     'gridRenderer': self._grid_entries,
-                    'shelfRenderer': lambda x: self._shelf_entries(x),
+                    'reelShelfRenderer': self._grid_entries,
+                    'shelfRenderer': self._shelf_entries,
                     'musicResponsiveListItemRenderer': lambda x: [self._music_reponsive_list_entry(x)],
                     'backstagePostThreadRenderer': self._post_thread_entries,
                     'videoRenderer': lambda x: [self._video_entry(x)],
                     'playlistRenderer': lambda x: self._grid_entries({'items': [{'playlistRenderer': x}]}),
                     'channelRenderer': lambda x: self._grid_entries({'items': [{'channelRenderer': x}]}),
+                    'hashtagTileRenderer': lambda x: [self._hashtag_tile_entry(x)]
                 }
                 for key, renderer in isr_content.items():
                     if key not in known_renderers:
@@ -3879,8 +4679,7 @@ def _entries(self, tab, item_id, ytcfg, account_syncid, visitor_data):
         parent_renderer = (
             try_get(tab_content, lambda x: x['sectionListRenderer'], dict)
             or try_get(tab_content, lambda x: x['richGridRenderer'], dict) or {})
-        for entry in extract_entries(parent_renderer):
-            yield entry
+        yield from extract_entries(parent_renderer)
         continuation = continuation_list[0]
 
         for page_num in itertools.count(1):
@@ -3889,7 +4688,7 @@ def _entries(self, tab, item_id, ytcfg, account_syncid, visitor_data):
             headers = self.generate_api_headers(
                 ytcfg=ytcfg, account_syncid=account_syncid, visitor_data=visitor_data)
             response = self._extract_response(
-                item_id='%s page %s' % (item_id, page_num),
+                item_id=f'{item_id} page {page_num}',
                 query=continuation, headers=headers, ytcfg=ytcfg,
                 check_get_keys=('continuationContents', 'onResponseReceivedActions', 'onResponseReceivedEndpoints'))
 
@@ -3899,106 +4698,89 @@ def _entries(self, tab, item_id, ytcfg, account_syncid, visitor_data):
             # See: https://github.com/ytdl-org/youtube-dl/issues/28702
             visitor_data = self._extract_visitor_data(response) or visitor_data
 
-            known_continuation_renderers = {
-                'playlistVideoListContinuation': self._playlist_entries,
-                'gridContinuation': self._grid_entries,
-                'itemSectionContinuation': self._post_thread_continuation_entries,
-                'sectionListContinuation': extract_entries,  # for feeds
-            }
-            continuation_contents = try_get(
-                response, lambda x: x['continuationContents'], dict) or {}
-            continuation_renderer = None
-            for key, value in continuation_contents.items():
-                if key not in known_continuation_renderers:
-                    continue
-                continuation_renderer = value
-                continuation_list = [None]
-                for entry in known_continuation_renderers[key](continuation_renderer):
-                    yield entry
-                continuation = continuation_list[0] or self._extract_continuation(continuation_renderer)
-                break
-            if continuation_renderer:
-                continue
-
             known_renderers = {
+                'videoRenderer': (self._grid_entries, 'items'),  # for membership tab
                 'gridPlaylistRenderer': (self._grid_entries, 'items'),
                 'gridVideoRenderer': (self._grid_entries, 'items'),
                 'gridChannelRenderer': (self._grid_entries, 'items'),
                 'playlistVideoRenderer': (self._playlist_entries, 'contents'),
                 'itemSectionRenderer': (extract_entries, 'contents'),  # for feeds
                 'richItemRenderer': (extract_entries, 'contents'),  # for hashtag
-                'backstagePostThreadRenderer': (self._post_thread_continuation_entries, 'contents')
+                'backstagePostThreadRenderer': (self._post_thread_continuation_entries, 'contents'),
+                'reportHistoryTableRowRenderer': (self._report_history_entries, 'rows'),
+                'playlistVideoListContinuation': (self._playlist_entries, None),
+                'gridContinuation': (self._grid_entries, None),
+                'itemSectionContinuation': (self._post_thread_continuation_entries, None),
+                'sectionListContinuation': (extract_entries, None),  # for feeds
             }
-            on_response_received = dict_get(response, ('onResponseReceivedActions', 'onResponseReceivedEndpoints'))
-            continuation_items = try_get(
-                on_response_received, lambda x: x[0]['appendContinuationItemsAction']['continuationItems'], list)
-            continuation_item = try_get(continuation_items, lambda x: x[0], dict) or {}
+
+            continuation_items = traverse_obj(response, (
+                ('onResponseReceivedActions', 'onResponseReceivedEndpoints'), ...,
+                'appendContinuationItemsAction', 'continuationItems'
+            ), 'continuationContents', get_all=False)
+            continuation_item = traverse_obj(continuation_items, 0, None, expected_type=dict, default={})
+
             video_items_renderer = None
-            for key, value in continuation_item.items():
+            for key in continuation_item.keys():
                 if key not in known_renderers:
                     continue
-                video_items_renderer = {known_renderers[key][1]: continuation_items}
+                func, parent_key = known_renderers[key]
+                video_items_renderer = {parent_key: continuation_items} if parent_key else continuation_items
                 continuation_list = [None]
-                for entry in known_renderers[key][0](video_items_renderer):
-                    yield entry
+                yield from func(video_items_renderer)
                 continuation = continuation_list[0] or self._extract_continuation(video_items_renderer)
+
+            if not video_items_renderer:
                 break
-            if video_items_renderer:
-                continue
-            break
 
     @staticmethod
-    def _extract_selected_tab(tabs):
-        for tab in tabs:
-            renderer = dict_get(tab, ('tabRenderer', 'expandableTabRenderer')) or {}
-            if renderer.get('selected') is True:
-                return renderer
-        else:
+    def _extract_selected_tab(tabs, fatal=True):
+        for tab_renderer in tabs:
+            if tab_renderer.get('selected'):
+                return tab_renderer
+        if fatal:
             raise ExtractorError('Unable to find selected tab')
 
-    @classmethod
-    def _extract_uploader(cls, data):
-        uploader = {}
-        renderer = cls._extract_sidebar_info_renderer(data, 'playlistSidebarSecondaryInfoRenderer') or {}
-        owner = try_get(
-            renderer, lambda x: x['videoOwner']['videoOwnerRenderer']['title']['runs'][0], dict)
-        if owner:
-            uploader['uploader'] = owner.get('text')
-            uploader['uploader_id'] = try_get(
-                owner, lambda x: x['navigationEndpoint']['browseEndpoint']['browseId'], compat_str)
-            uploader['uploader_url'] = urljoin(
-                'https://www.youtube.com/',
-                try_get(owner, lambda x: x['navigationEndpoint']['browseEndpoint']['canonicalBaseUrl'], compat_str))
-        return {k: v for k, v in uploader.items() if v is not None}
+    @staticmethod
+    def _extract_tab_renderers(response):
+        return traverse_obj(
+            response, ('contents', 'twoColumnBrowseResultsRenderer', 'tabs', ..., ('tabRenderer', 'expandableTabRenderer')), expected_type=dict)
 
     def _extract_from_tabs(self, item_id, ytcfg, data, tabs):
-        playlist_id = title = description = channel_url = channel_name = channel_id = None
-        tags = []
+        metadata = self._extract_metadata_from_tabs(item_id, data)
 
         selected_tab = self._extract_selected_tab(tabs)
-        primary_sidebar_renderer = self._extract_sidebar_info_renderer(data, 'playlistSidebarPrimaryInfoRenderer')
-        renderer = try_get(
-            data, lambda x: x['metadata']['channelMetadataRenderer'], dict)
-        if renderer:
-            channel_name = renderer.get('title')
-            channel_url = renderer.get('channelUrl')
-            channel_id = renderer.get('externalId')
-        else:
-            renderer = try_get(
-                data, lambda x: x['metadata']['playlistMetadataRenderer'], dict)
+        metadata['title'] += format_field(selected_tab, 'title', ' - %s')
+        metadata['title'] += format_field(selected_tab, 'expandedText', ' - %s')
 
-        if renderer:
-            title = renderer.get('title')
-            description = renderer.get('description', '')
-            playlist_id = channel_id
-            tags = renderer.get('keywords', '').split()
+        return self.playlist_result(
+            self._entries(
+                selected_tab, metadata['id'], ytcfg,
+                self._extract_account_syncid(ytcfg, data),
+                self._extract_visitor_data(data, ytcfg)),
+            **metadata)
+
+    def _extract_metadata_from_tabs(self, item_id, data):
+        info = {'id': item_id}
+
+        metadata_renderer = traverse_obj(data, ('metadata', 'channelMetadataRenderer'), expected_type=dict)
+        if metadata_renderer:
+            info.update({
+                'uploader': metadata_renderer.get('title'),
+                'uploader_id': metadata_renderer.get('externalId'),
+                'uploader_url': metadata_renderer.get('channelUrl'),
+            })
+            if info['uploader_id']:
+                info['id'] = info['uploader_id']
+        else:
+            metadata_renderer = traverse_obj(data, ('metadata', 'playlistMetadataRenderer'), expected_type=dict)
 
         # We can get the uncropped banner/avatar by replacing the crop params with '=s0'
         # See: https://github.com/yt-dlp/yt-dlp/issues/2237#issuecomment-1013694714
         def _get_uncropped(url):
             return url_or_none((url or '').split('=')[0] + '=s0')
 
-        avatar_thumbnails = self._extract_thumbnails(renderer, 'avatar')
+        avatar_thumbnails = self._extract_thumbnails(metadata_renderer, 'avatar')
         if avatar_thumbnails:
             uncropped_avatar = _get_uncropped(avatar_thumbnails[0]['url'])
             if uncropped_avatar:
@@ -4009,7 +4791,7 @@ def _get_uncropped(url):
                 })
 
         channel_banners = self._extract_thumbnails(
-            data, ('header', ..., ['banner', 'mobileBanner', 'tvBanner']))
+            data, ('header', ..., ('banner', 'mobileBanner', 'tvBanner')))
         for banner in channel_banners:
             banner['preference'] = -10
 
@@ -4022,48 +4804,66 @@ def _get_uncropped(url):
                     'preference': -5
                 })
 
+        # Deprecated - remove primary_sidebar_renderer when layout discontinued
+        primary_sidebar_renderer = self._extract_sidebar_info_renderer(data, 'playlistSidebarPrimaryInfoRenderer')
+        playlist_header_renderer = traverse_obj(data, ('header', 'playlistHeaderRenderer'), expected_type=dict)
+
         primary_thumbnails = self._extract_thumbnails(
-            primary_sidebar_renderer, ('thumbnailRenderer', 'playlistVideoThumbnailRenderer', 'thumbnail'))
-
-        if playlist_id is None:
-            playlist_id = item_id
-
-        playlist_stats = traverse_obj(primary_sidebar_renderer, 'stats')
-        last_updated_unix, _ = self._extract_time_text(playlist_stats, 2)
-        if title is None:
-            title = self._get_text(data, ('header', 'hashtagHeaderRenderer', 'hashtag')) or playlist_id
-        title += format_field(selected_tab, 'title', ' - %s')
-        title += format_field(selected_tab, 'expandedText', ' - %s')
-
-        metadata = {
-            'playlist_id': playlist_id,
-            'playlist_title': title,
-            'playlist_description': description,
-            'uploader': channel_name,
-            'uploader_id': channel_id,
-            'uploader_url': channel_url,
-            'thumbnails': primary_thumbnails + avatar_thumbnails + channel_banners,
-            'tags': tags,
-            'view_count': self._get_count(playlist_stats, 1),
+            primary_sidebar_renderer, ('thumbnailRenderer', ('playlistVideoThumbnailRenderer', 'playlistCustomThumbnailRenderer'), 'thumbnail'))
+        playlist_thumbnails = self._extract_thumbnails(
+            playlist_header_renderer, ('playlistHeaderBanner', 'heroPlaylistThumbnailRenderer', 'thumbnail'))
+
+        info.update({
+            'title': (traverse_obj(metadata_renderer, 'title')
+                      or self._get_text(data, ('header', 'hashtagHeaderRenderer', 'hashtag'))
+                      or info['id']),
             'availability': self._extract_availability(data),
-            'modified_date': strftime_or_none(last_updated_unix, '%Y%m%d'),
-            'playlist_count': self._get_count(playlist_stats, 0),
             'channel_follower_count': self._get_count(data, ('header', ..., 'subscriberCountText')),
-        }
-        if not channel_id:
-            metadata.update(self._extract_uploader(data))
-        metadata.update({
-            'channel': metadata['uploader'],
-            'channel_id': metadata['uploader_id'],
-            'channel_url': metadata['uploader_url']})
-        return self.playlist_result(
-            self._entries(
-                selected_tab, playlist_id, ytcfg,
-                self._extract_account_syncid(ytcfg, data),
-                self._extract_visitor_data(data, ytcfg)),
-            **metadata)
+            'description': try_get(metadata_renderer, lambda x: x.get('description', '')),
+            'tags': try_get(metadata_renderer or {}, lambda x: x.get('keywords', '').split()),
+            'thumbnails': (primary_thumbnails or playlist_thumbnails) + avatar_thumbnails + channel_banners,
+        })
 
-    def _extract_mix_playlist(self, playlist, playlist_id, data, ytcfg):
+        # Playlist stats is a text runs array containing [video count, view count, last updated].
+        # last updated or (view count and last updated) may be missing.
+        playlist_stats = get_first(
+            (primary_sidebar_renderer, playlist_header_renderer), (('stats', 'briefStats', 'numVideosText'), ))
+
+        last_updated_unix = self._parse_time_text(
+            self._get_text(playlist_stats, 2)  # deprecated, remove when old layout discontinued
+            or self._get_text(playlist_header_renderer, ('byline', 1, 'playlistBylineRenderer', 'text')))
+        info['modified_date'] = strftime_or_none(last_updated_unix, '%Y%m%d')
+
+        info['view_count'] = self._get_count(playlist_stats, 1)
+        if info['view_count'] is None:  # 0 is allowed
+            info['view_count'] = self._get_count(playlist_header_renderer, 'viewCountText')
+
+        info['playlist_count'] = self._get_count(playlist_stats, 0)
+        if info['playlist_count'] is None:  # 0 is allowed
+            info['playlist_count'] = self._get_count(playlist_header_renderer, ('byline', 0, 'playlistBylineRenderer', 'text'))
+
+        if not info.get('uploader_id'):
+            owner = traverse_obj(playlist_header_renderer, 'ownerText')
+            if not owner:  # Deprecated
+                owner = traverse_obj(
+                    self._extract_sidebar_info_renderer(data, 'playlistSidebarSecondaryInfoRenderer'),
+                    ('videoOwner', 'videoOwnerRenderer', 'title'))
+            owner_text = self._get_text(owner)
+            browse_ep = traverse_obj(owner, ('runs', 0, 'navigationEndpoint', 'browseEndpoint')) or {}
+            info.update({
+                'uploader': self._search_regex(r'^by (.+) and \d+ others?$', owner_text, 'uploader', default=owner_text),
+                'uploader_id': browse_ep.get('browseId'),
+                'uploader_url': urljoin('https://www.youtube.com', browse_ep.get('canonicalBaseUrl'))
+            })
+
+        info.update({
+            'channel': info['uploader'],
+            'channel_id': info['uploader_id'],
+            'channel_url': info['uploader_url']
+        })
+        return info
+
+    def _extract_inline_playlist(self, playlist, playlist_id, data, ytcfg):
         first_id = last_id = response = None
         for page_num in itertools.count(1):
             videos = list(self._playlist_entries(playlist))
@@ -4072,11 +4872,7 @@ def _extract_mix_playlist(self, playlist, playlist_id, data, ytcfg):
             start = next((i for i, v in enumerate(videos) if v['id'] == last_id), -1) + 1
             if start >= len(videos):
                 return
-            for video in videos[start:]:
-                if video['id'] == first_id:
-                    self.to_screen('First video %s found again; Assuming end of Mix' % first_id)
-                    return
-                yield video
+            yield from videos[start:]
             first_id = first_id or videos[0]['id']
             last_id = videos[-1]['id']
             watch_endpoint = try_get(
@@ -4100,20 +4896,25 @@ def _extract_mix_playlist(self, playlist, playlist_id, data, ytcfg):
 
     def _extract_from_playlist(self, item_id, url, data, playlist, ytcfg):
         title = playlist.get('title') or try_get(
-            data, lambda x: x['titleText']['simpleText'], compat_str)
+            data, lambda x: x['titleText']['simpleText'], str)
         playlist_id = playlist.get('playlistId') or item_id
 
         # Delegating everything except mix playlists to regular tab-based playlist URL
         playlist_url = urljoin(url, try_get(
             playlist, lambda x: x['endpoint']['commandMetadata']['webCommandMetadata']['url'],
-            compat_str))
-        if playlist_url and playlist_url != url:
+            str))
+
+        # Some playlists are unviewable but YouTube still provides a link to the (broken) playlist page [1]
+        # [1] MLCT, RLTDwFCb4jeqaKWnciAYM-ZVHg
+        is_known_unviewable = re.fullmatch(r'MLCT|RLTD[\w-]{22}', playlist_id)
+
+        if playlist_url and playlist_url != url and not is_known_unviewable:
             return self.url_result(
                 playlist_url, ie=YoutubeTabIE.ie_key(), video_id=playlist_id,
                 video_title=title)
 
         return self.playlist_result(
-            self._extract_mix_playlist(playlist, playlist_id, data, ytcfg),
+            self._extract_inline_playlist(playlist, playlist_id, data, ytcfg),
             playlist_id=playlist_id, playlist_title=title)
 
     def _extract_availability(self, data):
@@ -4122,31 +4923,40 @@ def _extract_availability(self, data):
         Note: Unless YouTube tells us explicitly, we do not assume it is public
         @param data: response
         """
-        is_private = is_unlisted = None
-        renderer = self._extract_sidebar_info_renderer(data, 'playlistSidebarPrimaryInfoRenderer') or {}
-        badge_labels = self._extract_badges(renderer)
+        sidebar_renderer = self._extract_sidebar_info_renderer(data, 'playlistSidebarPrimaryInfoRenderer') or {}
+        playlist_header_renderer = traverse_obj(data, ('header', 'playlistHeaderRenderer')) or {}
+        player_header_privacy = playlist_header_renderer.get('privacy')
+
+        badges = self._extract_badges(sidebar_renderer)
 
         # Personal playlists, when authenticated, have a dropdown visibility selector instead of a badge
-        privacy_dropdown_entries = try_get(
-            renderer, lambda x: x['privacyForm']['dropdownFormFieldRenderer']['dropdown']['dropdownRenderer']['entries'], list) or []
-        for renderer_dict in privacy_dropdown_entries:
-            is_selected = try_get(
-                renderer_dict, lambda x: x['privacyDropdownItemRenderer']['isSelected'], bool) or False
-            if not is_selected:
-                continue
-            label = self._get_text(renderer_dict, ('privacyDropdownItemRenderer', 'label'))
-            if label:
-                badge_labels.add(label.lower())
-                break
+        privacy_setting_icon = get_first(
+            (playlist_header_renderer, sidebar_renderer),
+            ('privacyForm', 'dropdownFormFieldRenderer', 'dropdown', 'dropdownRenderer', 'entries',
+             lambda _, v: v['privacyDropdownItemRenderer']['isSelected'], 'privacyDropdownItemRenderer', 'icon', 'iconType'),
+            expected_type=str)
 
-        for badge_label in badge_labels:
-            if badge_label == 'unlisted':
-                is_unlisted = True
-            elif badge_label == 'private':
-                is_private = True
-            elif badge_label == 'public':
-                is_unlisted = is_private = False
-        return self._availability(is_private, False, False, False, is_unlisted)
+        microformats_is_unlisted = traverse_obj(
+            data, ('microformat', 'microformatDataRenderer', 'unlisted'), expected_type=bool)
+
+        return (
+            'public' if (
+                self._has_badge(badges, BadgeType.AVAILABILITY_PUBLIC)
+                or player_header_privacy == 'PUBLIC'
+                or privacy_setting_icon == 'PRIVACY_PUBLIC')
+            else self._availability(
+                is_private=(
+                    self._has_badge(badges, BadgeType.AVAILABILITY_PRIVATE)
+                    or player_header_privacy == 'PRIVATE' if player_header_privacy is not None
+                    else privacy_setting_icon == 'PRIVACY_PRIVATE' if privacy_setting_icon is not None else None),
+                is_unlisted=(
+                    self._has_badge(badges, BadgeType.AVAILABILITY_UNLISTED)
+                    or player_header_privacy == 'UNLISTED' if player_header_privacy is not None
+                    else privacy_setting_icon == 'PRIVACY_UNLISTED' if privacy_setting_icon is not None
+                    else microformats_is_unlisted if microformats_is_unlisted is not None else None),
+                needs_subscription=self._has_badge(badges, BadgeType.AVAILABILITY_SUBSCRIPTION) or None,
+                needs_premium=self._has_badge(badges, BadgeType.AVAILABILITY_PREMIUM) or None,
+                needs_auth=False))
 
     @staticmethod
     def _extract_sidebar_info_renderer(data, info_renderer, expected_type=dict):
@@ -4159,94 +4969,75 @@ def _extract_sidebar_info_renderer(data, info_renderer, expected_type=dict):
 
     def _reload_with_unavailable_videos(self, item_id, data, ytcfg):
         """
-        Get playlist with unavailable videos if the 'show unavailable videos' button exists.
+        Reload playlists with unavailable videos (e.g. private videos, region blocked, etc.)
         """
-        browse_id = params = None
-        renderer = self._extract_sidebar_info_renderer(data, 'playlistSidebarPrimaryInfoRenderer')
-        if not renderer:
+        is_playlist = bool(traverse_obj(
+            data, ('metadata', 'playlistMetadataRenderer'), ('header', 'playlistHeaderRenderer')))
+        if not is_playlist:
             return
-        menu_renderer = try_get(
-            renderer, lambda x: x['menu']['menuRenderer']['items'], list) or []
-        for menu_item in menu_renderer:
-            if not isinstance(menu_item, dict):
-                continue
-            nav_item_renderer = menu_item.get('menuNavigationItemRenderer')
-            text = try_get(
-                nav_item_renderer, lambda x: x['text']['simpleText'], compat_str)
-            if not text or text.lower() != 'show unavailable videos':
-                continue
-            browse_endpoint = try_get(
-                nav_item_renderer, lambda x: x['navigationEndpoint']['browseEndpoint'], dict) or {}
-            browse_id = browse_endpoint.get('browseId')
-            params = browse_endpoint.get('params')
-            break
-
         headers = self.generate_api_headers(
             ytcfg=ytcfg, account_syncid=self._extract_account_syncid(ytcfg, data),
             visitor_data=self._extract_visitor_data(data, ytcfg))
         query = {
-            'params': params or 'wgYCCAA=',
-            'browseId': browse_id or 'VL%s' % item_id
+            'params': 'wgYCCAA=',
+            'browseId': f'VL{item_id}'
         }
         return self._extract_response(
             item_id=item_id, headers=headers, query=query,
             check_get_keys='contents', fatal=False, ytcfg=ytcfg,
-            note='Downloading API JSON with unavailable videos')
+            note='Redownloading playlist API JSON with unavailable videos')
+
+    @functools.cached_property
+    def skip_webpage(self):
+        return 'webpage' in self._configuration_arg('skip', ie_key=YoutubeTabIE.ie_key())
 
     def _extract_webpage(self, url, item_id, fatal=True):
-        retries = self.get_param('extractor_retries', 3)
-        count = -1
-        webpage = data = last_error = None
-        while count < retries:
-            count += 1
-            # Sometimes youtube returns a webpage with incomplete ytInitialData
-            # See: https://github.com/yt-dlp/yt-dlp/issues/116
-            if last_error:
-                self.report_warning('%s. Retrying ...' % last_error)
+        webpage, data = None, None
+        for retry in self.RetryManager(fatal=fatal):
             try:
-                webpage = self._download_webpage(
-                    url, item_id,
-                    note='Downloading webpage%s' % (' (retry #%d)' % count if count else '',))
+                webpage = self._download_webpage(url, item_id, note='Downloading webpage')
                 data = self.extract_yt_initial_data(item_id, webpage or '', fatal=fatal) or {}
             except ExtractorError as e:
                 if isinstance(e.cause, network_exceptions):
-                    if not isinstance(e.cause, compat_HTTPError) or e.cause.code not in (403, 429):
-                        last_error = error_to_compat_str(e.cause or e.msg)
-                        if count < retries:
-                            continue
-                if fatal:
-                    raise
-                self.report_warning(error_to_compat_str(e))
+                    if not isinstance(e.cause, urllib.error.HTTPError) or e.cause.code not in (403, 429):
+                        retry.error = e
+                        continue
+                self._error_or_warning(e, fatal=fatal)
                 break
-            else:
-                try:
-                    self._extract_and_report_alerts(data)
-                except ExtractorError as e:
-                    if fatal:
-                        raise
-                    self.report_warning(error_to_compat_str(e))
-                    break
 
-                if dict_get(data, ('contents', 'currentVideoEndpoint')):
-                    break
+            try:
+                self._extract_and_report_alerts(data)
+            except ExtractorError as e:
+                self._error_or_warning(e, fatal=fatal)
+                break
 
-                last_error = 'Incomplete yt initial data received'
-                if count >= retries:
-                    if fatal:
-                        raise ExtractorError(last_error)
-                    self.report_warning(last_error)
-                    break
+            # Sometimes youtube returns a webpage with incomplete ytInitialData
+            # See: https://github.com/yt-dlp/yt-dlp/issues/116
+            if not traverse_obj(data, 'contents', 'currentVideoEndpoint', 'onResponseReceivedActions'):
+                retry.error = ExtractorError('Incomplete yt initial data received')
+                continue
 
         return webpage, data
 
+    def _report_playlist_authcheck(self, ytcfg, fatal=True):
+        """Use if failed to extract ytcfg (and data) from initial webpage"""
+        if not ytcfg and self.is_authenticated:
+            msg = 'Playlists that require authentication may not extract correctly without a successful webpage download'
+            if 'authcheck' not in self._configuration_arg('skip', ie_key=YoutubeTabIE.ie_key()) and fatal:
+                raise ExtractorError(
+                    f'{msg}. If you are not downloading private content, or '
+                    'your cookies are only for the first account and channel,'
+                    ' pass "--extractor-args youtubetab:skip=authcheck" to skip this check',
+                    expected=True)
+            self.report_warning(msg, only_once=True)
+
     def _extract_data(self, url, item_id, ytcfg=None, fatal=True, webpage_fatal=False, default_client='web'):
         data = None
-        if 'webpage' not in self._configuration_arg('skip'):
+        if not self.skip_webpage:
             webpage, data = self._extract_webpage(url, item_id, fatal=webpage_fatal)
             ytcfg = ytcfg or self.extract_ytcfg(item_id, webpage)
             # Reject webpage data if redirected to home page without explicitly requesting
-            selected_tab = self._extract_selected_tab(traverse_obj(
-                data, ('contents', 'twoColumnBrowseResultsRenderer', 'tabs'), expected_type=list, default=[])) or {}
+            selected_tab = self._extract_selected_tab(self._extract_tab_renderers(data), fatal=False) or {}
             if (url != 'https://www.youtube.com/feed/recommended'
                     and selected_tab.get('tabIdentifier') == 'FEwhat_to_watch'  # Home page
                     and 'no-youtube-channel-redirect' not in self.get_param('compat_opts', [])):
@@ -4255,14 +5046,7 @@ def _extract_data(self, url, item_id, ytcfg=None, fatal=True, webpage_fatal=Fals
                     raise ExtractorError(msg, expected=True)
                 self.report_warning(msg, only_once=True)
         if not data:
-            if not ytcfg and self.is_authenticated:
-                msg = 'Playlists that require authentication may not extract correctly without a successful webpage download.'
-                if 'authcheck' not in self._configuration_arg('skip') and fatal:
-                    raise ExtractorError(
-                        msg + ' If you are not downloading private content, or your cookies are only for the first account and channel,'
-                              ' pass "--extractor-args youtubetab:skip=authcheck" to skip this check',
-                        expected=True)
-                self.report_warning(msg, only_once=True)
+            self._report_playlist_authcheck(ytcfg, fatal=fatal)
             data = self._extract_tab_endpoint(url, item_id, ytcfg, fatal=fatal, default_client=default_client)
         return data, ytcfg
 
@@ -4278,7 +5062,7 @@ def _extract_tab_endpoint(self, url, item_id, ytcfg=None, fatal=True, default_cl
                 return self._extract_response(
                     item_id=item_id, query=params, ep=ep, headers=headers,
                     ytcfg=ytcfg, fatal=fatal, default_client=default_client,
-                    check_get_keys=('contents', 'currentVideoEndpoint'))
+                    check_get_keys=('contents', 'currentVideoEndpoint', 'onResponseReceivedActions'))
         err_note = 'Failed to resolve url (does the playlist exist?)'
         if fatal:
             raise ExtractorError(err_note, expected=True)
@@ -4300,14 +5084,20 @@ def _search_results(self, query, params=NO_DEFAULT, default_client='web'):
             ('contents', 'tabbedSearchResultsRenderer', 'tabs', 0, 'tabRenderer', 'content', 'sectionListRenderer', 'contents'),
             ('continuationContents', ),
         )
-        check_get_keys = tuple(set(keys[0] for keys in content_keys))
+        display_id = f'query "{query}"'
+        check_get_keys = tuple({keys[0] for keys in content_keys})
+        ytcfg = self._download_ytcfg(default_client, display_id) if not self.skip_webpage else {}
+        self._report_playlist_authcheck(ytcfg, fatal=False)
 
         continuation_list = [None]
+        search = None
         for page_num in itertools.count(1):
             data.update(continuation_list[0] or {})
+            headers = self.generate_api_headers(
+                ytcfg=ytcfg, visitor_data=self._extract_visitor_data(search), default_client=default_client)
             search = self._extract_response(
-                item_id='query "%s" page %s' % (query, page_num), ep='search', query=data,
-                default_client=default_client, check_get_keys=check_get_keys)
+                item_id=f'{display_id} page {page_num}', ep='search', query=data,
+                default_client=default_client, check_get_keys=check_get_keys, ytcfg=ytcfg, headers=headers)
             slr_contents = traverse_obj(search, *content_keys)
             yield from self._extract_entries({'contents': list(variadic(slr_contents))}, continuation_list)
             if not continuation_list[0]:
@@ -4425,6 +5215,7 @@ class YoutubeTabIE(YoutubeTabBaseInfoExtractor):
             'channel_id': 'UCmlqkdCBesrv2Lak1mF_MxA',
             'uploader_url': 'https://www.youtube.com/channel/UCmlqkdCBesrv2Lak1mF_MxA',
             'channel_url': 'https://www.youtube.com/channel/UCmlqkdCBesrv2Lak1mF_MxA',
+            'availability': 'public',
         },
         'playlist_count': 1,
     }, {
@@ -4442,6 +5233,7 @@ class YoutubeTabIE(YoutubeTabBaseInfoExtractor):
             'channel_id': 'UCmlqkdCBesrv2Lak1mF_MxA',
             'channel_url': 'https://www.youtube.com/channel/UCmlqkdCBesrv2Lak1mF_MxA',
             'uploader_url': 'https://www.youtube.com/channel/UCmlqkdCBesrv2Lak1mF_MxA',
+            'availability': 'public',
         },
         'playlist_count': 0,
     }, {
@@ -4588,6 +5380,7 @@ class YoutubeTabIE(YoutubeTabBaseInfoExtractor):
             'channel_id': 'UCEPzS1rYsrkqzSLNp76nrcg',
             'channel_url': 'https://www.youtube.com/c/ChRiStIaAn008',
             'channel': 'Christiaan008',
+            'availability': 'public',
         },
         'playlist_count': 96,
     }, {
@@ -4606,6 +5399,7 @@ class YoutubeTabIE(YoutubeTabBaseInfoExtractor):
             'view_count': int,
             'description': '',
             'channel_id': 'UCBABnxM4Ar9ten8Mdjj1j0Q',
+            'availability': 'public',
         },
         'playlist_mincount': 1123,
         'expected_warnings': [r'[Uu]navailable videos (are|will be) hidden'],
@@ -4629,6 +5423,7 @@ class YoutubeTabIE(YoutubeTabBaseInfoExtractor):
             'channel': 'Interstellar Movie',
             'description': '',
             'modified_date': r're:\d{8}',
+            'availability': 'public',
         },
         'playlist_mincount': 21,
     }, {
@@ -4647,6 +5442,7 @@ class YoutubeTabIE(YoutubeTabBaseInfoExtractor):
             'channel_url': 'https://www.youtube.com/channel/UCTYLiWFZy8xtPwxFwX9rV7Q',
             'channel_id': 'UCTYLiWFZy8xtPwxFwX9rV7Q',
             'modified_date': r're:\d{8}',
+            'availability': 'public',
         },
         'playlist_mincount': 200,
         'expected_warnings': [r'[Uu]navailable videos (are|will be) hidden'],
@@ -4666,6 +5462,7 @@ class YoutubeTabIE(YoutubeTabBaseInfoExtractor):
             'uploader_url': 'https://www.youtube.com/c/blanktv',
             'modified_date': r're:\d{8}',
             'description': '',
+            'availability': 'public',
         },
         'playlist_mincount': 1000,
         'expected_warnings': [r'[Uu]navailable videos (are|will be) hidden'],
@@ -4684,6 +5481,8 @@ class YoutubeTabIE(YoutubeTabBaseInfoExtractor):
             'channel_id': 'UC9-y-6csu5WGm29I7JiwpnA',
             'channel_url': 'https://www.youtube.com/user/Computerphile',
             'channel': 'Computerphile',
+            'availability': 'public',
+            'modified_date': '20190712',
         },
         'playlist_mincount': 11,
     }, {
@@ -4721,7 +5520,7 @@ class YoutubeTabIE(YoutubeTabBaseInfoExtractor):
     }, {
         'url': 'https://www.youtube.com/channel/UCoMdktPbSTixAyNGwb-UYkQ/live',
         'info_dict': {
-            'id': 'GgL890LIznQ',  # This will keep changing
+            'id': 'Wq15eF5vCbI',  # This will keep changing
             'ext': 'mp4',
             'title': str,
             'uploader': 'Sky News',
@@ -4732,18 +5531,19 @@ class YoutubeTabIE(YoutubeTabBaseInfoExtractor):
             'categories': ['News & Politics'],
             'tags': list,
             'like_count': int,
-            'release_timestamp': 1642502819,
+            'release_timestamp': int,
             'channel': 'Sky News',
             'channel_id': 'UCoMdktPbSTixAyNGwb-UYkQ',
             'age_limit': 0,
             'view_count': int,
-            'thumbnail': 'https://i.ytimg.com/vi/GgL890LIznQ/maxresdefault_live.jpg',
+            'thumbnail': r're:https?://i\.ytimg\.com/vi/[^/]+/maxresdefault(?:_live)?\.jpg',
             'playable_in_embed': True,
-            'release_date': '20220118',
+            'release_date': r're:\d+',
             'availability': 'public',
             'live_status': 'is_live',
             'channel_url': 'https://www.youtube.com/channel/UCoMdktPbSTixAyNGwb-UYkQ',
-            'channel_follower_count': int
+            'channel_follower_count': int,
+            'concurrent_view_count': int,
         },
         'params': {
             'skip_download': True,
@@ -4821,7 +5621,7 @@ class YoutubeTabIE(YoutubeTabBaseInfoExtractor):
             'title': '#cctv9',
             'tags': [],
         },
-        'playlist_mincount': 350,
+        'playlist_mincount': 300,  # not consistent but should be over 300
     }, {
         'url': 'https://www.youtube.com/watch?list=PLW4dVinRY435CBE_JD3t-0SRXKfnZHS1P&feature=youtu.be&v=M9cJMXmQ_ZU',
         'only_matching': True,
@@ -4841,7 +5641,7 @@ class YoutubeTabIE(YoutubeTabBaseInfoExtractor):
             'uploader': 'NoCopyrightSounds',
             'description': 'Providing you with copyright free / safe music for gaming, live streaming, studying and more!',
             'uploader_id': 'UC_aEa8K-EOJ3D6gOs7HcyNg',
-            'title': 'NCS Releases',
+            'title': 'NCS : All Releases 💿',
             'uploader_url': 'https://www.youtube.com/c/NoCopyrightSounds',
             'channel_url': 'https://www.youtube.com/c/NoCopyrightSounds',
             'modified_date': r're:\d{8}',
@@ -4849,6 +5649,7 @@ class YoutubeTabIE(YoutubeTabBaseInfoExtractor):
             'channel_id': 'UC_aEa8K-EOJ3D6gOs7HcyNg',
             'tags': [],
             'channel': 'NoCopyrightSounds',
+            'availability': 'public',
         },
         'playlist_mincount': 166,
         'expected_warnings': [r'[Uu]navailable videos (are|will be) hidden'],
@@ -4869,23 +5670,18 @@ class YoutubeTabIE(YoutubeTabBaseInfoExtractor):
             'modified_date': r're:\d{8}',
             'uploader_url': 'https://www.youtube.com/channel/UC9ALqqC4aIeG5iDs7i90Bfw',
             'description': '',
+            'availability': 'public',
         },
-        'expected_warnings': [
-            'The URL does not have a videos tab',
-            r'[Uu]navailable videos (are|will be) hidden',
-        ],
         'playlist_mincount': 101,
     }, {
-        'note': 'Topic without a UU playlist',
+        # Destination channel with only a hidden self tab (tab id is UCtFRv9O2AHqOZjjynzrv-xg)
+        # Treat as a general feed
         'url': 'https://www.youtube.com/channel/UCtFRv9O2AHqOZjjynzrv-xg',
         'info_dict': {
             'id': 'UCtFRv9O2AHqOZjjynzrv-xg',
             'title': 'UCtFRv9O2AHqOZjjynzrv-xg',
             'tags': [],
         },
-        'expected_warnings': [
-            'the playlist redirect gave error',
-        ],
         'playlist_mincount': 9,
     }, {
         'note': 'Youtube music Album',
@@ -4910,7 +5706,7 @@ class YoutubeTabIE(YoutubeTabBaseInfoExtractor):
             'title': 'yt-dlp unlisted playlist test',
             'availability': 'unlisted',
             'tags': [],
-            'modified_date': '20211208',
+            'modified_date': '20220418',
             'channel': 'colethedj',
             'view_count': int,
             'description': '',
@@ -4953,6 +5749,7 @@ class YoutubeTabIE(YoutubeTabBaseInfoExtractor):
             'skip_download': True,
             'extractor_args': {'youtubetab': {'skip': ['webpage']}}
         },
+        'skip': 'Query for sorting no longer works',
     }, {
         'note': 'API Fallback: Topic, should redirect to playlist?list=UU...',
         'url': 'https://music.youtube.com/browse/UC9ALqqC4aIeG5iDs7i90Bfw',
@@ -4969,130 +5766,470 @@ class YoutubeTabIE(YoutubeTabBaseInfoExtractor):
             'channel': 'Royalty Free Music - Topic',
             'view_count': int,
             'uploader_url': 'https://www.youtube.com/channel/UC9ALqqC4aIeG5iDs7i90Bfw',
+            'availability': 'public',
         },
-        'expected_warnings': [
-            'does not have a videos tab',
-            r'[Uu]navailable videos (are|will be) hidden',
-        ],
         'playlist_mincount': 101,
         'params': {
             'skip_download': True,
             'extractor_args': {'youtubetab': {'skip': ['webpage']}}
         },
+    }, {
+        'note': 'non-standard redirect to regional channel',
+        'url': 'https://www.youtube.com/channel/UCwVVpHQ2Cs9iGJfpdFngePQ',
+        'only_matching': True
+    }, {
+        'note': 'collaborative playlist (uploader name in the form "by <uploader> and x other(s)")',
+        'url': 'https://www.youtube.com/playlist?list=PLx-_-Kk4c89oOHEDQAojOXzEzemXxoqx6',
+        'info_dict': {
+            'id': 'PLx-_-Kk4c89oOHEDQAojOXzEzemXxoqx6',
+            'modified_date': '20220407',
+            'channel_url': 'https://www.youtube.com/channel/UCKcqXmCcyqnhgpA5P0oHH_Q',
+            'tags': [],
+            'uploader_id': 'UCKcqXmCcyqnhgpA5P0oHH_Q',
+            'uploader': 'pukkandan',
+            'availability': 'unlisted',
+            'channel_id': 'UCKcqXmCcyqnhgpA5P0oHH_Q',
+            'channel': 'pukkandan',
+            'description': 'Test for collaborative playlist',
+            'title': 'yt-dlp test - collaborative playlist',
+            'view_count': int,
+            'uploader_url': 'https://www.youtube.com/channel/UCKcqXmCcyqnhgpA5P0oHH_Q',
+        },
+        'playlist_mincount': 2
+    }, {
+        'note': 'translated tab name',
+        'url': 'https://www.youtube.com/channel/UCiu-3thuViMebBjw_5nWYrA/playlists',
+        'info_dict': {
+            'id': 'UCiu-3thuViMebBjw_5nWYrA',
+            'tags': [],
+            'uploader_id': 'UCiu-3thuViMebBjw_5nWYrA',
+            'channel_url': 'https://www.youtube.com/channel/UCiu-3thuViMebBjw_5nWYrA',
+            'description': 'test description',
+            'title': 'cole-dlp-test-acc - 再生リスト',
+            'uploader_url': 'https://www.youtube.com/channel/UCiu-3thuViMebBjw_5nWYrA',
+            'uploader': 'cole-dlp-test-acc',
+            'channel_id': 'UCiu-3thuViMebBjw_5nWYrA',
+            'channel': 'cole-dlp-test-acc',
+        },
+        'playlist_mincount': 1,
+        'params': {'extractor_args': {'youtube': {'lang': ['ja']}}},
+        'expected_warnings': ['Preferring "ja"'],
+    }, {
+        # XXX: this should really check flat playlist entries, but the test suite doesn't support that
+        'note': 'preferred lang set with playlist with translated video titles',
+        'url': 'https://www.youtube.com/playlist?list=PLt5yu3-wZAlQAaPZ5Z-rJoTdbT-45Q7c0',
+        'info_dict': {
+            'id': 'PLt5yu3-wZAlQAaPZ5Z-rJoTdbT-45Q7c0',
+            'tags': [],
+            'view_count': int,
+            'channel_url': 'https://www.youtube.com/channel/UCiu-3thuViMebBjw_5nWYrA',
+            'uploader': 'cole-dlp-test-acc',
+            'uploader_id': 'UCiu-3thuViMebBjw_5nWYrA',
+            'channel': 'cole-dlp-test-acc',
+            'channel_id': 'UCiu-3thuViMebBjw_5nWYrA',
+            'description': 'test',
+            'uploader_url': 'https://www.youtube.com/channel/UCiu-3thuViMebBjw_5nWYrA',
+            'title': 'dlp test playlist',
+            'availability': 'public',
+        },
+        'playlist_mincount': 1,
+        'params': {'extractor_args': {'youtube': {'lang': ['ja']}}},
+        'expected_warnings': ['Preferring "ja"'],
+    }, {
+        # shorts audio pivot for 2GtVksBMYFM.
+        'url': 'https://www.youtube.com/feed/sfv_audio_pivot?bp=8gUrCikSJwoLMkd0VmtzQk1ZRk0SCzJHdFZrc0JNWUZNGgsyR3RWa3NCTVlGTQ==',
+        'info_dict': {
+            'id': 'sfv_audio_pivot',
+            'title': 'sfv_audio_pivot',
+            'tags': [],
+        },
+        'playlist_mincount': 50,
+
+    }, {
+        # Channel with a real live tab (not to be mistaken with streams tab)
+        # Do not treat like it should redirect to live stream
+        'url': 'https://www.youtube.com/channel/UCEH7P7kyJIkS_gJf93VYbmg/live',
+        'info_dict': {
+            'id': 'UCEH7P7kyJIkS_gJf93VYbmg',
+            'title': 'UCEH7P7kyJIkS_gJf93VYbmg - Live',
+            'tags': [],
+        },
+        'playlist_mincount': 20,
+    }, {
+        # Tab name is not the same as tab id
+        'url': 'https://www.youtube.com/channel/UCQvWX73GQygcwXOTSf_VDVg/letsplay',
+        'info_dict': {
+            'id': 'UCQvWX73GQygcwXOTSf_VDVg',
+            'title': 'UCQvWX73GQygcwXOTSf_VDVg - Let\'s play',
+            'tags': [],
+        },
+        'playlist_mincount': 8,
+    }, {
+        # Home tab id is literally home. Not to get mistaken with featured
+        'url': 'https://www.youtube.com/channel/UCQvWX73GQygcwXOTSf_VDVg/home',
+        'info_dict': {
+            'id': 'UCQvWX73GQygcwXOTSf_VDVg',
+            'title': 'UCQvWX73GQygcwXOTSf_VDVg - Home',
+            'tags': [],
+        },
+        'playlist_mincount': 8,
+    }, {
+        # Should get three playlists for videos, shorts and streams tabs
+        'url': 'https://www.youtube.com/channel/UCK9V2B22uJYu3N7eR_BT9QA',
+        'info_dict': {
+            'id': 'UCK9V2B22uJYu3N7eR_BT9QA',
+            'title': 'Polka Ch. 尾丸ポルカ',
+            'channel_follower_count': int,
+            'channel_id': 'UCK9V2B22uJYu3N7eR_BT9QA',
+            'channel_url': 'https://www.youtube.com/channel/UCK9V2B22uJYu3N7eR_BT9QA',
+            'uploader': 'Polka Ch. 尾丸ポルカ',
+            'description': 'md5:3b8df1ac5af337aa206e37ee3d181ec9',
+            'channel': 'Polka Ch. 尾丸ポルカ',
+            'tags': 'count:35',
+            'uploader_url': 'https://www.youtube.com/channel/UCK9V2B22uJYu3N7eR_BT9QA',
+            'uploader_id': 'UCK9V2B22uJYu3N7eR_BT9QA',
+        },
+        'playlist_count': 3,
+    }, {
+        # Shorts tab with channel with handle
+        'url': 'https://www.youtube.com/@NotJustBikes/shorts',
+        'info_dict': {
+            'id': 'UC0intLFzLaudFG-xAvUEO-A',
+            'title': 'Not Just Bikes - Shorts',
+            'tags': 'count:12',
+            'uploader': 'Not Just Bikes',
+            'channel_url': 'https://www.youtube.com/channel/UC0intLFzLaudFG-xAvUEO-A',
+            'description': 'md5:7513148b1f02b924783157d84c4ea555',
+            'channel_follower_count': int,
+            'uploader_id': 'UC0intLFzLaudFG-xAvUEO-A',
+            'channel_id': 'UC0intLFzLaudFG-xAvUEO-A',
+            'uploader_url': 'https://www.youtube.com/channel/UC0intLFzLaudFG-xAvUEO-A',
+            'channel': 'Not Just Bikes',
+        },
+        'playlist_mincount': 10,
+    }, {
+        # Streams tab
+        'url': 'https://www.youtube.com/channel/UC3eYAvjCVwNHgkaGbXX3sig/streams',
+        'info_dict': {
+            'id': 'UC3eYAvjCVwNHgkaGbXX3sig',
+            'title': '中村悠一 - Live',
+            'tags': 'count:7',
+            'channel_id': 'UC3eYAvjCVwNHgkaGbXX3sig',
+            'channel_url': 'https://www.youtube.com/channel/UC3eYAvjCVwNHgkaGbXX3sig',
+            'uploader_id': 'UC3eYAvjCVwNHgkaGbXX3sig',
+            'channel': '中村悠一',
+            'uploader_url': 'https://www.youtube.com/channel/UC3eYAvjCVwNHgkaGbXX3sig',
+            'channel_follower_count': int,
+            'uploader': '中村悠一',
+            'description': 'md5:e744f6c93dafa7a03c0c6deecb157300',
+        },
+        'playlist_mincount': 60,
+    }, {
+        # Channel with no uploads and hence no videos, streams, shorts tabs or uploads playlist. This should fail.
+        # See test_youtube_lists
+        'url': 'https://www.youtube.com/channel/UC2yXPzFejc422buOIzn_0CA',
+        'only_matching': True,
+    }, {
+        # No uploads and no UCID given. Should fail with no uploads error
+        # See test_youtube_lists
+        'url': 'https://www.youtube.com/news',
+        'only_matching': True
+    }, {
+        # No videos tab but has a shorts tab
+        'url': 'https://www.youtube.com/c/TKFShorts',
+        'info_dict': {
+            'id': 'UCgJ5_1F6yJhYLnyMszUdmUg',
+            'title': 'Shorts Break - Shorts',
+            'tags': 'count:32',
+            'channel_id': 'UCgJ5_1F6yJhYLnyMszUdmUg',
+            'channel': 'Shorts Break',
+            'description': 'md5:a6c234cf3d50d878ef8721e34457cd11',
+            'uploader': 'Shorts Break',
+            'channel_follower_count': int,
+            'uploader_id': 'UCgJ5_1F6yJhYLnyMszUdmUg',
+            'uploader_url': 'https://www.youtube.com/channel/UCgJ5_1F6yJhYLnyMszUdmUg',
+            'channel_url': 'https://www.youtube.com/channel/UCgJ5_1F6yJhYLnyMszUdmUg',
+        },
+        'playlist_mincount': 30,
+    }, {
+        # Trending Now Tab. tab id is empty
+        'url': 'https://www.youtube.com/feed/trending',
+        'info_dict': {
+            'id': 'trending',
+            'title': 'trending - Now',
+            'tags': [],
+        },
+        'playlist_mincount': 30,
+    }, {
+        # Trending Gaming Tab. tab id is empty
+        'url': 'https://www.youtube.com/feed/trending?bp=4gIcGhpnYW1pbmdfY29ycHVzX21vc3RfcG9wdWxhcg%3D%3D',
+        'info_dict': {
+            'id': 'trending',
+            'title': 'trending - Gaming',
+            'tags': [],
+        },
+        'playlist_mincount': 30,
+    }, {
+        # Shorts url result in shorts tab
+        'url': 'https://www.youtube.com/channel/UCiu-3thuViMebBjw_5nWYrA/shorts',
+        'info_dict': {
+            'id': 'UCiu-3thuViMebBjw_5nWYrA',
+            'title': 'cole-dlp-test-acc - Shorts',
+            'uploader_id': 'UCiu-3thuViMebBjw_5nWYrA',
+            'channel': 'cole-dlp-test-acc',
+            'description': 'test description',
+            'channel_id': 'UCiu-3thuViMebBjw_5nWYrA',
+            'channel_url': 'https://www.youtube.com/channel/UCiu-3thuViMebBjw_5nWYrA',
+            'tags': [],
+            'uploader': 'cole-dlp-test-acc',
+            'uploader_url': 'https://www.youtube.com/channel/UCiu-3thuViMebBjw_5nWYrA',
+
+        },
+        'playlist': [{
+            'info_dict': {
+                '_type': 'url',
+                'ie_key': 'Youtube',
+                'url': 'https://www.youtube.com/shorts/sSM9J5YH_60',
+                'id': 'sSM9J5YH_60',
+                'channel_id': 'UCiu-3thuViMebBjw_5nWYrA',
+                'title': 'SHORT short',
+                'channel': 'cole-dlp-test-acc',
+                'channel_url': 'https://www.youtube.com/channel/UCiu-3thuViMebBjw_5nWYrA',
+                'view_count': int,
+                'thumbnails': list,
+            }
+        }],
+        'params': {'extract_flat': True},
+    }, {
+        # Live video status should be extracted
+        'url': 'https://www.youtube.com/channel/UCQvWX73GQygcwXOTSf_VDVg/live',
+        'info_dict': {
+            'id': 'UCQvWX73GQygcwXOTSf_VDVg',
+            'title': 'UCQvWX73GQygcwXOTSf_VDVg - Live',  # TODO, should be Minecraft - Live or Minecraft - Topic - Live
+            'tags': []
+        },
+        'playlist': [{
+            'info_dict': {
+                '_type': 'url',
+                'ie_key': 'Youtube',
+                'url': 'startswith:https://www.youtube.com/watch?v=',
+                'id': str,
+                'title': str,
+                'live_status': 'is_live',
+                'channel_id': str,
+                'channel_url': str,
+                'concurrent_view_count': int,
+                'channel': str,
+            }
+        }],
+        'params': {'extract_flat': True, 'playlist_items': '1'},
+        'playlist_mincount': 1
+    }, {
+        # Channel renderer metadata. Contains number of videos on the channel
+        'url': 'https://www.youtube.com/channel/UCiu-3thuViMebBjw_5nWYrA/channels',
+        'info_dict': {
+            'id': 'UCiu-3thuViMebBjw_5nWYrA',
+            'title': 'cole-dlp-test-acc - Channels',
+            'uploader_id': 'UCiu-3thuViMebBjw_5nWYrA',
+            'channel': 'cole-dlp-test-acc',
+            'description': 'test description',
+            'channel_id': 'UCiu-3thuViMebBjw_5nWYrA',
+            'channel_url': 'https://www.youtube.com/channel/UCiu-3thuViMebBjw_5nWYrA',
+            'tags': [],
+            'uploader': 'cole-dlp-test-acc',
+            'uploader_url': 'https://www.youtube.com/channel/UCiu-3thuViMebBjw_5nWYrA',
+
+        },
+        'playlist': [{
+            'info_dict': {
+                '_type': 'url',
+                'ie_key': 'YoutubeTab',
+                'url': 'https://www.youtube.com/channel/UC-lHJZR3Gqxm24_Vd_AJ5Yw',
+                'id': 'UC-lHJZR3Gqxm24_Vd_AJ5Yw',
+                'channel_id': 'UC-lHJZR3Gqxm24_Vd_AJ5Yw',
+                'title': 'PewDiePie',
+                'channel': 'PewDiePie',
+                'channel_url': 'https://www.youtube.com/channel/UC-lHJZR3Gqxm24_Vd_AJ5Yw',
+                'thumbnails': list,
+                'channel_follower_count': int,
+                'playlist_count': int
+            }
+        }],
+        'params': {'extract_flat': True},
     }]
 
     @classmethod
     def suitable(cls, url):
-        return False if YoutubeIE.suitable(url) else super(
-            YoutubeTabIE, cls).suitable(url)
+        return False if YoutubeIE.suitable(url) else super().suitable(url)
+
+    _URL_RE = re.compile(rf'(?P<pre>{_VALID_URL})(?(not_channel)|(?P<tab>/[^?#/]+))?(?P<post>.*)$')
+
+    def _get_url_mobj(self, url):
+        mobj = self._URL_RE.match(url).groupdict()
+        mobj.update((k, '') for k, v in mobj.items() if v is None)
+        return mobj
+
+    def _extract_tab_id_and_name(self, tab, base_url='https://www.youtube.com'):
+        tab_name = (tab.get('title') or '').lower()
+        tab_url = urljoin(base_url, traverse_obj(
+            tab, ('endpoint', 'commandMetadata', 'webCommandMetadata', 'url')))
+
+        tab_id = (tab_url and self._get_url_mobj(tab_url)['tab'][1:]
+                  or traverse_obj(tab, 'tabIdentifier', expected_type=str))
+        if tab_id:
+            return {
+                'TAB_ID_SPONSORSHIPS': 'membership',
+            }.get(tab_id, tab_id), tab_name
+
+        # Fallback to tab name if we cannot get the tab id.
+        # XXX: should we strip non-ascii letters? e.g. in case of 'let's play' tab example on special gaming channel
+        # Note that in the case of translated tab name this may result in an empty string, which we don't want.
+        if tab_name:
+            self.write_debug(f'Falling back to selected tab name: {tab_name}')
+        return {
+            'home': 'featured',
+            'live': 'streams',
+        }.get(tab_name, tab_name), tab_name
 
-    _URL_RE = re.compile(rf'(?P<pre>{_VALID_URL})(?(not_channel)|(?P<tab>/\w+))?(?P<post>.*)$')
+    def _has_tab(self, tabs, tab_id):
+        return any(self._extract_tab_id_and_name(tab)[0] == tab_id for tab in tabs)
 
     @YoutubeTabBaseInfoExtractor.passthrough_smuggled_data
     def _real_extract(self, url, smuggled_data):
         item_id = self._match_id(url)
-        url = compat_urlparse.urlunparse(
-            compat_urlparse.urlparse(url)._replace(netloc='www.youtube.com'))
+        url = urllib.parse.urlunparse(
+            urllib.parse.urlparse(url)._replace(netloc='www.youtube.com'))
         compat_opts = self.get_param('compat_opts', [])
 
-        def get_mobj(url):
-            mobj = self._URL_RE.match(url).groupdict()
-            mobj.update((k, '') for k, v in mobj.items() if v is None)
-            return mobj
-
-        mobj, redirect_warning = get_mobj(url), None
-        # Youtube returns incomplete data if tabname is not lower case
-        pre, tab, post, is_channel = mobj['pre'], mobj['tab'].lower(), mobj['post'], not mobj['not_channel']
-        if is_channel:
-            if smuggled_data.get('is_music_url'):
-                if item_id[:2] == 'VL':  # Youtube music VL channels have an equivalent playlist
-                    item_id = item_id[2:]
-                    pre, tab, post, is_channel = f'https://www.youtube.com/playlist?list={item_id}', '', '', False
-                elif item_id[:2] == 'MP':  # Resolve albums (/[channel/browse]/MP...) to their equivalent playlist
-                    mdata = self._extract_tab_endpoint(
-                        f'https://music.youtube.com/channel/{item_id}', item_id, default_client='web_music')
-                    murl = traverse_obj(mdata, ('microformat', 'microformatDataRenderer', 'urlCanonical'),
-                                        get_all=False, expected_type=compat_str)
-                    if not murl:
-                        raise ExtractorError('Failed to resolve album to playlist')
-                    return self.url_result(murl, ie=YoutubeTabIE.ie_key())
-                elif mobj['channel_type'] == 'browse':  # Youtube music /browse/ should be changed to /channel/
-                    pre = f'https://www.youtube.com/channel/{item_id}'
-
-        original_tab_name = tab
+        mobj = self._get_url_mobj(url)
+        pre, tab, post, is_channel = mobj['pre'], mobj['tab'], mobj['post'], not mobj['not_channel']
+        if is_channel and smuggled_data.get('is_music_url'):
+            if item_id[:2] == 'VL':  # Youtube music VL channels have an equivalent playlist
+                return self.url_result(
+                    f'https://music.youtube.com/playlist?list={item_id[2:]}', YoutubeTabIE, item_id[2:])
+            elif item_id[:2] == 'MP':  # Resolve albums (/[channel/browse]/MP...) to their equivalent playlist
+                mdata = self._extract_tab_endpoint(
+                    f'https://music.youtube.com/channel/{item_id}', item_id, default_client='web_music')
+                murl = traverse_obj(mdata, ('microformat', 'microformatDataRenderer', 'urlCanonical'),
+                                    get_all=False, expected_type=str)
+                if not murl:
+                    raise ExtractorError('Failed to resolve album to playlist')
+                return self.url_result(murl, YoutubeTabIE)
+            elif mobj['channel_type'] == 'browse':  # Youtube music /browse/ should be changed to /channel/
+                return self.url_result(
+                    f'https://music.youtube.com/channel/{item_id}{tab}{post}', YoutubeTabIE, item_id)
+
+        original_tab_id, display_id = tab[1:], f'{item_id}{tab}'
         if is_channel and not tab and 'no-youtube-channel-redirect' not in compat_opts:
-            # Home URLs should redirect to /videos/
-            redirect_warning = ('A channel/user page was given. All the channel\'s videos will be downloaded. '
-                                'To download only the videos in the home page, add a "/featured" to the URL')
-            tab = '/videos'
-
-        url = ''.join((pre, tab, post))
-        mobj = get_mobj(url)
+            url = f'{pre}/videos{post}'
 
         # Handle both video/playlist URLs
         qs = parse_qs(url)
-        video_id, playlist_id = [qs.get(key, [None])[0] for key in ('v', 'list')]
-
+        video_id, playlist_id = [traverse_obj(qs, (key, 0)) for key in ('v', 'list')]
         if not video_id and mobj['not_channel'].startswith('watch'):
             if not playlist_id:
                 # If there is neither video or playlist ids, youtube redirects to home page, which is undesirable
-                raise ExtractorError('Unable to recognize tab page')
+                raise ExtractorError('A video URL was given without video ID', expected=True)
             # Common mistake: https://www.youtube.com/watch?list=playlist_id
             self.report_warning(f'A video URL was given without video ID. Trying to download playlist {playlist_id}')
-            url = f'https://www.youtube.com/playlist?list={playlist_id}'
-            mobj = get_mobj(url)
+            return self.url_result(
+                f'https://www.youtube.com/playlist?list={playlist_id}', YoutubeTabIE, playlist_id)
 
-        if video_id and playlist_id:
-            if self.get_param('noplaylist'):
-                self.to_screen(f'Downloading just video {video_id} because of --no-playlist')
-                return self.url_result(f'https://www.youtube.com/watch?v={video_id}',
-                                       ie=YoutubeIE.ie_key(), video_id=video_id)
-            self.to_screen(f'Downloading playlist {playlist_id}; add --no-playlist to just download video {video_id}')
+        if not self._yes_playlist(playlist_id, video_id):
+            return self.url_result(
+                f'https://www.youtube.com/watch?v={video_id}', YoutubeIE, video_id)
+
+        data, ytcfg = self._extract_data(url, display_id)
+
+        # YouTube may provide a non-standard redirect to the regional channel
+        # See: https://github.com/yt-dlp/yt-dlp/issues/2694
+        # https://support.google.com/youtube/answer/2976814#zippy=,conditional-redirects
+        redirect_url = traverse_obj(
+            data, ('onResponseReceivedActions', ..., 'navigateAction', 'endpoint', 'commandMetadata', 'webCommandMetadata', 'url'), get_all=False)
+        if redirect_url and 'no-youtube-channel-redirect' not in compat_opts:
+            redirect_url = ''.join((urljoin('https://www.youtube.com', redirect_url), tab, post))
+            self.to_screen(f'This playlist is likely not available in your region. Following conditional redirect to {redirect_url}')
+            return self.url_result(redirect_url, YoutubeTabIE)
+
+        tabs, extra_tabs = self._extract_tab_renderers(data), []
+        if is_channel and tabs and 'no-youtube-channel-redirect' not in compat_opts:
+            selected_tab = self._extract_selected_tab(tabs)
+            selected_tab_id, selected_tab_name = self._extract_tab_id_and_name(selected_tab, url)  # NB: Name may be translated
+            self.write_debug(f'Selected tab: {selected_tab_id!r} ({selected_tab_name}), Requested tab: {original_tab_id!r}')
+
+            if not original_tab_id and selected_tab_name:
+                self.to_screen('Downloading all uploads of the channel. '
+                               'To download only the videos in a specific tab, pass the tab\'s URL')
+                if self._has_tab(tabs, 'streams'):
+                    extra_tabs.append(''.join((pre, '/streams', post)))
+                if self._has_tab(tabs, 'shorts'):
+                    extra_tabs.append(''.join((pre, '/shorts', post)))
+                # XXX: Members-only tab should also be extracted
+
+                if not extra_tabs and selected_tab_id != 'videos':
+                    # Channel does not have streams, shorts or videos tabs
+                    if item_id[:2] != 'UC':
+                        raise ExtractorError('This channel has no uploads', expected=True)
+
+                    # Topic channels don't have /videos. Use the equivalent playlist instead
+                    pl_id = f'UU{item_id[2:]}'
+                    pl_url = f'https://www.youtube.com/playlist?list={pl_id}'
+                    try:
+                        data, ytcfg = self._extract_data(pl_url, pl_id, ytcfg=ytcfg, fatal=True, webpage_fatal=True)
+                    except ExtractorError:
+                        raise ExtractorError('This channel has no uploads', expected=True)
+                    else:
+                        item_id, url = pl_id, pl_url
+                        self.to_screen(
+                            f'The channel does not have a videos, shorts, or live tab. Redirecting to playlist {pl_id} instead')
 
-        data, ytcfg = self._extract_data(url, item_id)
+                elif extra_tabs and selected_tab_id != 'videos':
+                    # When there are shorts/live tabs but not videos tab
+                    url, data = f'{pre}{post}', None
 
-        tabs = traverse_obj(data, ('contents', 'twoColumnBrowseResultsRenderer', 'tabs'), expected_type=list)
-        if tabs:
-            selected_tab = self._extract_selected_tab(tabs)
-            selected_tab_name = selected_tab.get('title', '').lower()
-            if selected_tab_name == 'home':
-                selected_tab_name = 'featured'
-            requested_tab_name = mobj['tab'][1:]
-            if 'no-youtube-channel-redirect' not in compat_opts:
-                if requested_tab_name == 'live':
+            elif (original_tab_id or 'videos') != selected_tab_id:
+                if original_tab_id == 'live':
                     # Live tab should have redirected to the video
-                    raise ExtractorError('The channel is not currently live', expected=True)
-                if requested_tab_name not in ('', selected_tab_name):
-                    redirect_warning = f'The channel does not have a {requested_tab_name} tab'
-                    if not original_tab_name:
-                        if item_id[:2] == 'UC':
-                            # Topic channels don't have /videos. Use the equivalent playlist instead
-                            pl_id = f'UU{item_id[2:]}'
-                            pl_url = f'https://www.youtube.com/playlist?list={pl_id}'
-                            try:
-                                data, ytcfg = self._extract_data(pl_url, pl_id, ytcfg=ytcfg, fatal=True, webpage_fatal=True)
-                            except ExtractorError:
-                                redirect_warning += ' and the playlist redirect gave error'
-                            else:
-                                item_id, url, selected_tab_name = pl_id, pl_url, requested_tab_name
-                                redirect_warning += f'. Redirecting to playlist {pl_id} instead'
-                        if selected_tab_name and selected_tab_name != requested_tab_name:
-                            redirect_warning += f'. {selected_tab_name} tab is being downloaded instead'
-                    else:
-                        raise ExtractorError(redirect_warning, expected=True)
+                    # Except in the case the channel has an actual live tab
+                    # Example: https://www.youtube.com/channel/UCEH7P7kyJIkS_gJf93VYbmg/live
+                    raise UserNotLive(video_id=item_id)
+                elif selected_tab_name:
+                    raise ExtractorError(f'This channel does not have a {original_tab_id} tab', expected=True)
 
-        if redirect_warning:
-            self.to_screen(redirect_warning)
-        self.write_debug(f'Final URL: {url}')
+                # For channels such as https://www.youtube.com/channel/UCtFRv9O2AHqOZjjynzrv-xg
+                url = f'{pre}{post}'
 
         # YouTube sometimes provides a button to reload playlist with unavailable videos.
         if 'no-youtube-unavailable-videos' not in compat_opts:
-            data = self._reload_with_unavailable_videos(item_id, data, ytcfg) or data
+            data = self._reload_with_unavailable_videos(display_id, data, ytcfg) or data
         self._extract_and_report_alerts(data, only_once=True)
-        tabs = traverse_obj(data, ('contents', 'twoColumnBrowseResultsRenderer', 'tabs'), expected_type=list)
-        if tabs:
-            return self._extract_from_tabs(item_id, ytcfg, data, tabs)
 
+        tabs, entries = self._extract_tab_renderers(data), []
+        if tabs:
+            entries = [self._extract_from_tabs(item_id, ytcfg, data, tabs)]
+            entries[0].update({
+                'extractor_key': YoutubeTabIE.ie_key(),
+                'extractor': YoutubeTabIE.IE_NAME,
+                'webpage_url': url,
+            })
+        if self.get_param('playlist_items') == '0':
+            entries.extend(self.url_result(u, YoutubeTabIE) for u in extra_tabs)
+        else:  # Users expect to get all `video_id`s even with `--flat-playlist`. So don't return `url_result`
+            entries.extend(map(self._real_extract, extra_tabs))
+
+        if len(entries) == 1:
+            return entries[0]
+        elif entries:
+            metadata = self._extract_metadata_from_tabs(item_id, data)
+            uploads_url = 'the Uploads (UU) playlist URL'
+            if try_get(metadata, lambda x: x['channel_id'].startswith('UC')):
+                uploads_url = f'https://www.youtube.com/playlist?list=UU{metadata["channel_id"][2:]}'
+            self.to_screen(
+                'Downloading as multiple playlists, separated by tabs. '
+                f'To download as a single playlist instead, pass {uploads_url}')
+            return self.playlist_result(entries, item_id, **metadata)
+
+        # Inline playlist
         playlist = traverse_obj(
             data, ('contents', 'twoColumnWatchNextResults', 'playlist', 'playlist'), expected_type=dict)
         if playlist:
@@ -5101,10 +6238,9 @@ def get_mobj(url):
         video_id = traverse_obj(
             data, ('currentVideoEndpoint', 'watchEndpoint', 'videoId'), expected_type=str) or video_id
         if video_id:
-            if mobj['tab'] != '/live':  # live tab is expected to redirect to video
+            if tab != '/live':  # live tab is expected to redirect to video
                 self.report_warning(f'Unable to recognize playlist. Downloading just video {video_id}')
-            return self.url_result(f'https://www.youtube.com/watch?v={video_id}',
-                                   ie=YoutubeIE.ie_key(), video_id=video_id)
+            return self.url_result(f'https://www.youtube.com/watch?v={video_id}', YoutubeIE, video_id)
 
         raise ExtractorError('Unable to recognize tab page')
 
@@ -5137,12 +6273,13 @@ class YoutubePlaylistIE(InfoExtractor):
             'uploader_id': 'UCKSpbfbl5kRQpTdL7kMc-1Q',
             'description': 'md5:8fa6f52abb47a9552002fa3ddfc57fc2',
             'view_count': int,
-            'uploader_url': 'https://www.youtube.com/user/Wickydoo',
+            'uploader_url': 'https://www.youtube.com/c/WickmanVT',
             'modified_date': r're:\d{8}',
             'channel_id': 'UCKSpbfbl5kRQpTdL7kMc-1Q',
             'channel': 'Wickman',
             'tags': [],
-            'channel_url': 'https://www.youtube.com/user/Wickydoo',
+            'channel_url': 'https://www.youtube.com/c/WickmanVT',
+            'availability': 'public',
         },
         'playlist_mincount': 29,
     }, {
@@ -5170,11 +6307,12 @@ class YoutubePlaylistIE(InfoExtractor):
             'channel': 'milan',
             'channel_id': 'UCEI1-PVPcYXjB73Hfelbmaw',
             'uploader_url': 'https://www.youtube.com/channel/UCEI1-PVPcYXjB73Hfelbmaw',
+            'availability': 'public',
         },
-        'expected_warnings': [r'[Uu]navailable videos (are|will be) hidden'],
+        'expected_warnings': [r'[Uu]navailable videos? (is|are|will be) hidden'],
     }, {
         'url': 'http://www.youtube.com/embed/_xDOZElKyNU?list=PLsyOSbh5bs16vubvKePAQ1x3PhKavfBIl',
-        'playlist_mincount': 654,
+        'playlist_mincount': 455,
         'info_dict': {
             'title': '2018 Chinese New Singles (11/6 updated)',
             'id': 'PLsyOSbh5bs16vubvKePAQ1x3PhKavfBIl',
@@ -5188,6 +6326,7 @@ class YoutubePlaylistIE(InfoExtractor):
             'uploader_url': 'https://www.youtube.com/c/愛低音的國王',
             'channel_id': 'UC21nz3_MesPLqtDqwdvnoxA',
             'modified_date': r're:\d{8}',
+            'availability': 'public',
         },
         'expected_warnings': [r'[Uu]navailable videos (are|will be) hidden'],
     }, {
@@ -5207,7 +6346,7 @@ def suitable(cls, url):
         qs = parse_qs(url)
         if qs.get('v', [None])[0]:
             return False
-        return super(YoutubePlaylistIE, cls).suitable(url)
+        return super().suitable(url)
 
     def _real_extract(self, url):
         playlist_id = self._match_id(url)
@@ -5247,6 +6386,8 @@ class YoutubeYtBeIE(InfoExtractor):
             'channel_url': 'https://www.youtube.com/channel/UCEfMCQ9bs3tjvjy1s451zaw',
             'availability': 'public',
             'duration': 59,
+            'comment_count': int,
+            'channel_follower_count': int
         },
         'params': {
             'noplaylist': True,
@@ -5295,9 +6436,7 @@ class YoutubeYtUserIE(InfoExtractor):
 
     def _real_extract(self, url):
         user_id = self._match_id(url)
-        return self.url_result(
-            'https://www.youtube.com/user/%s/videos' % user_id,
-            ie=YoutubeTabIE.ie_key(), video_id=user_id)
+        return self.url_result(f'https://www.youtube.com/user/{user_id}', YoutubeTabIE, user_id)
 
 
 class YoutubeFavouritesIE(YoutubeBaseInfoExtractor):
@@ -5319,6 +6458,97 @@ def _real_extract(self, url):
             ie=YoutubeTabIE.ie_key())
 
 
+class YoutubeNotificationsIE(YoutubeTabBaseInfoExtractor):
+    IE_NAME = 'youtube:notif'
+    IE_DESC = 'YouTube notifications; ":ytnotif" keyword (requires cookies)'
+    _VALID_URL = r':ytnotif(?:ication)?s?'
+    _LOGIN_REQUIRED = True
+    _TESTS = [{
+        'url': ':ytnotif',
+        'only_matching': True,
+    }, {
+        'url': ':ytnotifications',
+        'only_matching': True,
+    }]
+
+    def _extract_notification_menu(self, response, continuation_list):
+        notification_list = traverse_obj(
+            response,
+            ('actions', 0, 'openPopupAction', 'popup', 'multiPageMenuRenderer', 'sections', 0, 'multiPageMenuNotificationSectionRenderer', 'items'),
+            ('actions', 0, 'appendContinuationItemsAction', 'continuationItems'),
+            expected_type=list) or []
+        continuation_list[0] = None
+        for item in notification_list:
+            entry = self._extract_notification_renderer(item.get('notificationRenderer'))
+            if entry:
+                yield entry
+            continuation = item.get('continuationItemRenderer')
+            if continuation:
+                continuation_list[0] = continuation
+
+    def _extract_notification_renderer(self, notification):
+        video_id = traverse_obj(
+            notification, ('navigationEndpoint', 'watchEndpoint', 'videoId'), expected_type=str)
+        url = f'https://www.youtube.com/watch?v={video_id}'
+        channel_id = None
+        if not video_id:
+            browse_ep = traverse_obj(
+                notification, ('navigationEndpoint', 'browseEndpoint'), expected_type=dict)
+            channel_id = traverse_obj(browse_ep, 'browseId', expected_type=str)
+            post_id = self._search_regex(
+                r'/post/(.+)', traverse_obj(browse_ep, 'canonicalBaseUrl', expected_type=str),
+                'post id', default=None)
+            if not channel_id or not post_id:
+                return
+            # The direct /post url redirects to this in the browser
+            url = f'https://www.youtube.com/channel/{channel_id}/community?lb={post_id}'
+
+        channel = traverse_obj(
+            notification, ('contextualMenu', 'menuRenderer', 'items', 1, 'menuServiceItemRenderer', 'text', 'runs', 1, 'text'),
+            expected_type=str)
+        notification_title = self._get_text(notification, 'shortMessage')
+        if notification_title:
+            notification_title = notification_title.replace('\xad', '')  # remove soft hyphens
+        # TODO: handle recommended videos
+        title = self._search_regex(
+            rf'{re.escape(channel or "")}[^:]+: (.+)', notification_title,
+            'video title', default=None)
+        timestamp = (self._parse_time_text(self._get_text(notification, 'sentTimeText'))
+                     if self._configuration_arg('approximate_date', ie_key=YoutubeTabIE)
+                     else None)
+        return {
+            '_type': 'url',
+            'url': url,
+            'ie_key': (YoutubeIE if video_id else YoutubeTabIE).ie_key(),
+            'video_id': video_id,
+            'title': title,
+            'channel_id': channel_id,
+            'channel': channel,
+            'thumbnails': self._extract_thumbnails(notification, 'videoThumbnail'),
+            'timestamp': timestamp,
+        }
+
+    def _notification_menu_entries(self, ytcfg):
+        continuation_list = [None]
+        response = None
+        for page in itertools.count(1):
+            ctoken = traverse_obj(
+                continuation_list, (0, 'continuationEndpoint', 'getNotificationMenuEndpoint', 'ctoken'), expected_type=str)
+            response = self._extract_response(
+                item_id=f'page {page}', query={'ctoken': ctoken} if ctoken else {}, ytcfg=ytcfg,
+                ep='notification/get_notification_menu', check_get_keys='actions',
+                headers=self.generate_api_headers(ytcfg=ytcfg, visitor_data=self._extract_visitor_data(response)))
+            yield from self._extract_notification_menu(response, continuation_list)
+            if not continuation_list[0]:
+                break
+
+    def _real_extract(self, url):
+        display_id = 'notifications'
+        ytcfg = self._download_ytcfg('web', display_id) if not self.skip_webpage else {}
+        self._report_playlist_authcheck(ytcfg)
+        return self.playlist_result(self._notification_menu_entries(ytcfg), display_id, display_id)
+
+
 class YoutubeSearchIE(YoutubeTabBaseInfoExtractor, SearchInfoExtractor):
     IE_DESC = 'YouTube search'
     IE_NAME = 'youtube:search'
@@ -5367,7 +6597,42 @@ class YoutubeSearchURLIE(YoutubeTabBaseInfoExtractor):
             'id': 'python',
             'title': 'python',
         }
-
+    }, {
+        'url': 'https://www.youtube.com/results?search_query=%23cats',
+        'playlist_mincount': 1,
+        'info_dict': {
+            'id': '#cats',
+            'title': '#cats',
+            # The test suite does not have support for nested playlists
+            # 'entries': [{
+            #     'url': r're:https://(www\.)?youtube\.com/hashtag/cats',
+            #     'title': '#cats',
+            # }],
+        },
+    }, {
+        # Channel results
+        'url': 'https://www.youtube.com/results?search_query=kurzgesagt&sp=EgIQAg%253D%253D',
+        'info_dict': {
+            'id': 'kurzgesagt',
+            'title': 'kurzgesagt',
+        },
+        'playlist': [{
+            'info_dict': {
+                '_type': 'url',
+                'id': 'UCsXVk37bltHxD1rDPwtNM8Q',
+                'url': 'https://www.youtube.com/channel/UCsXVk37bltHxD1rDPwtNM8Q',
+                'ie_key': 'YoutubeTab',
+                'channel': 'Kurzgesagt – In a Nutshell',
+                'description': 'md5:4ae48dfa9505ffc307dad26342d06bfc',
+                'title': 'Kurzgesagt – In a Nutshell',
+                'channel_id': 'UCsXVk37bltHxD1rDPwtNM8Q',
+                'playlist_count': int,  # XXX: should have a way of saying > 1
+                'channel_url': 'https://www.youtube.com/channel/UCsXVk37bltHxD1rDPwtNM8Q',
+                'thumbnails': list
+            }
+        }],
+        'params': {'extract_flat': True, 'playlist_items': '1'},
+        'playlist_mincount': 1,
     }, {
         'url': 'https://www.youtube.com/results?q=test&sp=EgQIBBgB',
         'only_matching': True,
@@ -5380,7 +6645,7 @@ def _real_extract(self, url):
 
 
 class YoutubeMusicSearchURLIE(YoutubeTabBaseInfoExtractor):
-    IE_DESC = 'YouTube music search URLs with selectable sections (Eg: #songs)'
+    IE_DESC = 'YouTube music search URLs with selectable sections, e.g. #songs'
     IE_NAME = 'youtube:music:search_url'
     _VALID_URL = r'https?://music\.youtube\.com/search\?([^#]+&)?(?:search_query|q)=(?:[^&]+)(?:[&#]|$)'
     _TESTS = [{
@@ -5424,7 +6689,7 @@ def _real_extract(self, url):
         if params:
             section = next((k for k, v in self._SECTIONS.items() if v == params), params)
         else:
-            section = compat_urllib_parse_unquote_plus((url.split('#') + [''])[1]).lower()
+            section = urllib.parse.unquote_plus((url.split('#') + [''])[1]).lower()
             params = self._SECTIONS.get(section)
             if not params:
                 section = None
@@ -5435,14 +6700,17 @@ def _real_extract(self, url):
 class YoutubeFeedsInfoExtractor(InfoExtractor):
     """
     Base class for feed extractors
-    Subclasses must define the _FEED_NAME property.
+    Subclasses must re-define the _FEED_NAME property.
     """
     _LOGIN_REQUIRED = True
-    _TESTS = []
+    _FEED_NAME = 'feeds'
 
-    @property
+    def _real_initialize(self):
+        YoutubeBaseInfoExtractor._check_login_required(self)
+
+    @classproperty
     def IE_NAME(self):
-        return 'youtube:%s' % self._FEED_NAME
+        return f'youtube:{self._FEED_NAME}'
 
     def _real_extract(self, url):
         return self.url_result(
@@ -5503,6 +6771,46 @@ class YoutubeHistoryIE(YoutubeFeedsInfoExtractor):
     }]
 
 
+class YoutubeStoriesIE(InfoExtractor):
+    IE_DESC = 'YouTube channel stories; "ytstories:" prefix'
+    IE_NAME = 'youtube:stories'
+    _VALID_URL = r'ytstories:UC(?P<id>[A-Za-z0-9_-]{21}[AQgw])$'
+    _TESTS = [{
+        'url': 'ytstories:UCwFCb4jeqaKWnciAYM-ZVHg',
+        'only_matching': True,
+    }]
+
+    def _real_extract(self, url):
+        playlist_id = f'RLTD{self._match_id(url)}'
+        return self.url_result(
+            smuggle_url(f'https://www.youtube.com/playlist?list={playlist_id}&playnext=1', {'is_story': True}),
+            ie=YoutubeTabIE, video_id=playlist_id)
+
+
+class YoutubeShortsAudioPivotIE(InfoExtractor):
+    IE_DESC = 'YouTube Shorts audio pivot (Shorts using audio of a given video)'
+    IE_NAME = 'youtube:shorts:pivot:audio'
+    _VALID_URL = r'https?://(?:www\.)?youtube\.com/source/(?P<id>[\w-]{11})/shorts'
+    _TESTS = [{
+        'url': 'https://www.youtube.com/source/Lyj-MZSAA9o/shorts',
+        'only_matching': True,
+    }]
+
+    @staticmethod
+    def _generate_audio_pivot_params(video_id):
+        """
+        Generates sfv_audio_pivot browse params for this video id
+        """
+        pb_params = b'\xf2\x05+\n)\x12\'\n\x0b%b\x12\x0b%b\x1a\x0b%b' % ((video_id.encode(),) * 3)
+        return urllib.parse.quote(base64.b64encode(pb_params).decode())
+
+    def _real_extract(self, url):
+        video_id = self._match_id(url)
+        return self.url_result(
+            f'https://www.youtube.com/feed/sfv_audio_pivot?bp={self._generate_audio_pivot_params(video_id)}',
+            ie=YoutubeTabIE)
+
+
 class YoutubeTruncatedURLIE(InfoExtractor):
     IE_NAME = 'youtube:truncated_url'
     IE_DESC = False  # Do not list
@@ -5552,14 +6860,62 @@ def _real_extract(self, url):
             expected=True)
 
 
-class YoutubeClipIE(InfoExtractor):
+class YoutubeClipIE(YoutubeTabBaseInfoExtractor):
     IE_NAME = 'youtube:clip'
-    IE_DESC = False  # Do not list
-    _VALID_URL = r'https?://(?:www\.)?youtube\.com/clip/'
+    _VALID_URL = r'https?://(?:www\.)?youtube\.com/clip/(?P<id>[^/?#]+)'
+    _TESTS = [{
+        # FIXME: Other metadata should be extracted from the clip, not from the base video
+        'url': 'https://www.youtube.com/clip/UgytZKpehg-hEMBSn3F4AaABCQ',
+        'info_dict': {
+            'id': 'UgytZKpehg-hEMBSn3F4AaABCQ',
+            'ext': 'mp4',
+            'section_start': 29.0,
+            'section_end': 39.7,
+            'duration': 10.7,
+            'age_limit': 0,
+            'availability': 'public',
+            'categories': ['Gaming'],
+            'channel': 'Scott The Woz',
+            'channel_id': 'UC4rqhyiTs7XyuODcECvuiiQ',
+            'channel_url': 'https://www.youtube.com/channel/UC4rqhyiTs7XyuODcECvuiiQ',
+            'description': 'md5:7a4517a17ea9b4bd98996399d8bb36e7',
+            'like_count': int,
+            'playable_in_embed': True,
+            'tags': 'count:17',
+            'thumbnail': 'https://i.ytimg.com/vi_webp/ScPX26pdQik/maxresdefault.webp',
+            'title': 'Mobile Games on Console - Scott The Woz',
+            'upload_date': '20210920',
+            'uploader': 'Scott The Woz',
+            'uploader_id': 'scottthewoz',
+            'uploader_url': 'http://www.youtube.com/user/scottthewoz',
+            'view_count': int,
+            'live_status': 'not_live',
+            'channel_follower_count': int
+        }
+    }]
 
     def _real_extract(self, url):
-        self.report_warning('YouTube clips are not currently supported. The entire video will be downloaded instead')
-        return self.url_result(url, 'Generic')
+        clip_id = self._match_id(url)
+        _, data = self._extract_webpage(url, clip_id)
+
+        video_id = traverse_obj(data, ('currentVideoEndpoint', 'watchEndpoint', 'videoId'))
+        if not video_id:
+            raise ExtractorError('Unable to find video ID')
+
+        clip_data = traverse_obj(data, (
+            'engagementPanels', ..., 'engagementPanelSectionListRenderer', 'content', 'clipSectionRenderer',
+            'contents', ..., 'clipAttributionRenderer', 'onScrubExit', 'commandExecutorCommand', 'commands', ...,
+            'openPopupAction', 'popup', 'notificationActionRenderer', 'actionButton', 'buttonRenderer', 'command',
+            'commandExecutorCommand', 'commands', ..., 'loopCommand'), get_all=False)
+
+        return {
+            '_type': 'url_transparent',
+            'url': f'https://www.youtube.com/watch?v={video_id}',
+            'ie_key': YoutubeIE.ie_key(),
+            'id': clip_id,
+            'section_start': int(clip_data['startTimeMs']) / 1000,
+            'section_end': int(clip_data['endTimeMs']) / 1000,
+        }
 
 
 class YoutubeTruncatedIDIE(InfoExtractor):
@@ -5575,5 +6931,5 @@ class YoutubeTruncatedIDIE(InfoExtractor):
     def _real_extract(self, url):
         video_id = self._match_id(url)
         raise ExtractorError(
-            'Incomplete YouTube ID %s. URL %s looks truncated.' % (video_id, url),
+            f'Incomplete YouTube ID {video_id}. URL {url} looks truncated.',
             expected=True)