[youtube] Fix error reporting of "Incomplete data"

[yt-dlp.git] / yt_dlp / YoutubeDL.py

diff --git a/yt_dlp/YoutubeDL.py b/yt_dlp/YoutubeDL.py
index 78345f87aa36b888b5b26150e5045c57207140de..7f6dc6027ba1d1dc36c67784613935d69b6dcbcd 100644 (file)
--- a/yt_dlp/YoutubeDL.py
+++ b/yt_dlp/YoutubeDL.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3

 import collections
 import contextlib
 import datetime
 import collections
 import contextlib
 import datetime


@@ -11,7 +10,6 @@
 import locale
 import operator
 import os
 import locale
 import operator
 import os

-import platform

 import random
 import re
 import shutil
 import random
 import re
 import shutil


@@ -26,20 +24,10 @@
 from string import ascii_letters
 
 from .cache import Cache
 from string import ascii_letters
 
 from .cache import Cache

-from .compat import (
-    compat_get_terminal_size,
-    compat_os_name,
-    compat_shlex_quote,
-    compat_str,
-    compat_urllib_error,
-    compat_urllib_request,
-    windows_enable_vt_mode,
-)
+from .compat import compat_os_name, compat_shlex_quote

 from .cookies import load_cookies
 from .downloader import FFmpegFD, get_suitable_downloader, shorten_protocol_name
 from .downloader.rtmp import rtmpdump_version
 from .cookies import load_cookies
 from .downloader import FFmpegFD, get_suitable_downloader, shorten_protocol_name
 from .downloader.rtmp import rtmpdump_version

-from .extractor import _LAZY_LOADER
-from .extractor import _PLUGIN_CLASSES as plugin_extractors

 from .extractor import gen_extractor_classes, get_info_extractor
 from .extractor.openload import PhantomJSwrapper
 from .minicurses import format_text
 from .extractor import gen_extractor_classes, get_info_extractor
 from .extractor.openload import PhantomJSwrapper
 from .minicurses import format_text


@@ -54,14 +42,19 @@
     FFmpegFixupTimestampPP,
     FFmpegMergerPP,
     FFmpegPostProcessor,
     FFmpegFixupTimestampPP,
     FFmpegMergerPP,
     FFmpegPostProcessor,

+    FFmpegVideoConvertorPP,

     MoveFilesAfterDownloadPP,
     get_postprocessor,
 )
     MoveFilesAfterDownloadPP,
     get_postprocessor,
 )

+from .postprocessor.ffmpeg import resolve_mapping as resolve_recode_mapping

 from .update import detect_variant
 from .utils import (
     DEFAULT_OUTTMPL,
 from .update import detect_variant
 from .utils import (
     DEFAULT_OUTTMPL,

+    IDENTITY,

     LINK_TEMPLATES,
     LINK_TEMPLATES,

+    MEDIA_EXTENSIONS,

     NO_DEFAULT,
     NO_DEFAULT,

+    NUMBER_RE,

     OUTTMPL_TYPES,
     POSTPROCESS_WHEN,
     STR_FORMAT_RE_TMPL,
     OUTTMPL_TYPES,
     POSTPROCESS_WHEN,
     STR_FORMAT_RE_TMPL,


@@ -75,30 +68,33 @@
     ExtractorError,
     GeoRestrictedError,
     HEADRequest,
     ExtractorError,
     GeoRestrictedError,
     HEADRequest,

-    InAdvancePagedList,

     ISO3166Utils,
     LazyList,
     MaxDownloadsReached,
     Namespace,
     PagedList,
     PerRequestProxyHandler,
     ISO3166Utils,
     LazyList,
     MaxDownloadsReached,
     Namespace,
     PagedList,
     PerRequestProxyHandler,

+    PlaylistEntries,

     Popen,
     PostProcessingError,
     ReExtractInfo,
     RejectedVideoReached,
     SameFileError,
     UnavailableVideoError,
     Popen,
     PostProcessingError,
     ReExtractInfo,
     RejectedVideoReached,
     SameFileError,
     UnavailableVideoError,

+    UserNotLive,

     YoutubeDLCookieProcessor,
     YoutubeDLHandler,
     YoutubeDLRedirectHandler,
     age_restricted,
     args_to_str,
     YoutubeDLCookieProcessor,
     YoutubeDLHandler,
     YoutubeDLRedirectHandler,
     age_restricted,
     args_to_str,

+    bug_reports_message,

     date_from_str,
     determine_ext,
     determine_protocol,
     encode_compat_str,
     encodeFilename,
     error_to_compat_str,
     date_from_str,
     determine_ext,
     determine_protocol,
     encode_compat_str,
     encodeFilename,
     error_to_compat_str,

+    escapeHTML,

     expand_path,
     filter_dict,
     float_or_none,
     expand_path,
     filter_dict,
     float_or_none,


@@ -106,11 +102,13 @@
     format_decimal_suffix,
     format_field,
     formatSeconds,
     format_decimal_suffix,
     format_field,
     formatSeconds,

+    get_compatible_ext,

     get_domain,
     int_or_none,
     iri_to_uri,
     join_nonempty,
     locked_file,
     get_domain,
     int_or_none,
     iri_to_uri,
     join_nonempty,
     locked_file,

+    make_archive_id,

     make_dir,
     make_HTTPS_handler,
     merge_headers,
     make_dir,
     make_HTTPS_handler,
     merge_headers,


@@ -118,7 +116,6 @@
     number_of_digits,
     orderedSet,
     parse_filesize,
     number_of_digits,
     orderedSet,
     parse_filesize,

-    platform_name,

     preferredencoding,
     prepend_extension,
     register_socks_protocols,
     preferredencoding,
     prepend_extension,
     register_socks_protocols,


@@ -134,17 +131,20 @@
     strftime_or_none,
     subtitles_filename,
     supports_terminal_sequences,
     strftime_or_none,
     subtitles_filename,
     supports_terminal_sequences,

+    system_identifier,

     timetuple_from_msec,
     to_high_limit_path,
     traverse_obj,
     timetuple_from_msec,
     to_high_limit_path,
     traverse_obj,

+    try_call,

     try_get,
     url_basename,
     variadic,
     version_tuple,
     try_get,
     url_basename,
     variadic,
     version_tuple,

+    windows_enable_vt_mode,

     write_json_file,
     write_string,
 )
     write_json_file,
     write_string,
 )

-from .version import RELEASE_GIT_HEAD, __version__
+from .version import RELEASE_GIT_HEAD, VARIANT, __version__

 
 if compat_os_name == 'nt':
     import ctypes
 
 if compat_os_name == 'nt':
     import ctypes


@@ -193,13 +193,6 @@ class YoutubeDL:
                        For compatibility, a single list is also accepted
     print_to_file:     A dict with keys WHEN (same as forceprint) mapped to
                        a list of tuples with (template, filename)
                        For compatibility, a single list is also accepted
     print_to_file:     A dict with keys WHEN (same as forceprint) mapped to
                        a list of tuples with (template, filename)

-    forceurl:          Force printing final URL. (Deprecated)
-    forcetitle:        Force printing title. (Deprecated)
-    forceid:           Force printing ID. (Deprecated)
-    forcethumbnail:    Force printing thumbnail URL. (Deprecated)
-    forcedescription:  Force printing description. (Deprecated)
-    forcefilename:     Force printing final filename. (Deprecated)
-    forceduration:     Force printing duration. (Deprecated)

     forcejson:         Force printing info_dict as JSON.
     dump_single_json:  Force printing the info_dict of the whole playlist
                        (or video) as a single JSON line.
     forcejson:         Force printing info_dict as JSON.
     dump_single_json:  Force printing the info_dict of the whole playlist
                        (or video) as a single JSON line.


@@ -249,11 +242,9 @@ class YoutubeDL:
                        and don't overwrite any file if False
                        For compatibility with youtube-dl,
                        "nooverwrites" may also be used instead
                        and don't overwrite any file if False
                        For compatibility with youtube-dl,
                        "nooverwrites" may also be used instead

-    playliststart:     Playlist item to start at.
-    playlistend:       Playlist item to end at.

     playlist_items:    Specific indices of playlist to download.
     playlist_items:    Specific indices of playlist to download.

-    playlistreverse:   Download playlist items in reverse order.

     playlistrandom:    Download playlist items in random order.
     playlistrandom:    Download playlist items in random order.

+    lazy_playlist:     Process playlist entries as they are received.

     matchtitle:        Download only matching titles.
     rejecttitle:       Reject downloads for matching titles.
     logger:            Log messages to a logging.Logger instance.
     matchtitle:        Download only matching titles.
     rejecttitle:       Reject downloads for matching titles.
     logger:            Log messages to a logging.Logger instance.


@@ -276,15 +267,12 @@ class YoutubeDL:
     writedesktoplink:  Write a Linux internet shortcut file (.desktop)
     writesubtitles:    Write the video subtitles to a file
     writeautomaticsub: Write the automatically generated subtitles to a file
     writedesktoplink:  Write a Linux internet shortcut file (.desktop)
     writesubtitles:    Write the video subtitles to a file
     writeautomaticsub: Write the automatically generated subtitles to a file

-    allsubtitles:      Deprecated - Use subtitleslangs = ['all']
-                       Downloads all the subtitles of the video
-                       (requires writesubtitles or writeautomaticsub)

     listsubtitles:     Lists all available subtitles for the video
     subtitlesformat:   The format code for subtitles
     subtitleslangs:    List of languages of the subtitles to download (can be regex).
                        The list may contain "all" to refer to all the available
                        subtitles. The language can be prefixed with a "-" to
     listsubtitles:     Lists all available subtitles for the video
     subtitlesformat:   The format code for subtitles
     subtitleslangs:    List of languages of the subtitles to download (can be regex).
                        The list may contain "all" to refer to all the available
                        subtitles. The language can be prefixed with a "-" to

-                       exclude it from the requested languages. Eg: ['all', '-live_chat']
+                       exclude it from the requested languages, e.g. ['all', '-live_chat']

     keepvideo:         Keep the video file after post-processing
     daterange:         A DateRange object, download only if the upload_date is in the range.
     skip_download:     Skip the actual download of the video file
     keepvideo:         Keep the video file after post-processing
     daterange:         A DateRange object, download only if the upload_date is in the range.
     skip_download:     Skip the actual download of the video file


@@ -311,15 +299,19 @@ class YoutubeDL:
                        has been filtered out.
     break_per_url:     Whether break_on_reject and break_on_existing
                        should act on each input URL as opposed to for the entire queue
                        has been filtered out.
     break_per_url:     Whether break_on_reject and break_on_existing
                        should act on each input URL as opposed to for the entire queue

-    cookiefile:        File name where cookies should be read from and dumped to
+    cookiefile:        File name or text stream from where cookies should be read and dumped to

     cookiesfrombrowser:  A tuple containing the name of the browser, the profile
     cookiesfrombrowser:  A tuple containing the name of the browser, the profile

-                       name/pathfrom where cookies are loaded, and the name of the
-                       keyring. Eg: ('chrome', ) or ('vivaldi', 'default', 'BASICTEXT')
+                       name/path from where cookies are loaded, and the name of the
+                       keyring, e.g. ('chrome', ) or ('vivaldi', 'default', 'BASICTEXT')

     legacyserverconnect: Explicitly allow HTTPS connection to servers that do not
                        support RFC 5746 secure renegotiation
     nocheckcertificate:  Do not verify SSL certificates
     legacyserverconnect: Explicitly allow HTTPS connection to servers that do not
                        support RFC 5746 secure renegotiation
     nocheckcertificate:  Do not verify SSL certificates

+    client_certificate:  Path to client certificate file in PEM format. May include the private key
+    client_certificate_key:  Path to private key file for client certificate
+    client_certificate_password:  Password for client certificate private key, if encrypted.
+                        If not provided and the key is encrypted, yt-dlp will ask interactively

     prefer_insecure:   Use HTTP instead of HTTPS to retrieve information.
     prefer_insecure:   Use HTTP instead of HTTPS to retrieve information.

-                       At the moment, this is only supported by YouTube.
+                       (Only supported by some extractors)

     http_headers:      A dictionary of custom headers to be used for all requests
     proxy:             URL of the proxy server to use
     geo_verification_proxy:  URL of the proxy to use for IP address verification
     http_headers:      A dictionary of custom headers to be used for all requests
     proxy:             URL of the proxy server to use
     geo_verification_proxy:  URL of the proxy to use for IP address verification


@@ -328,13 +320,17 @@ class YoutubeDL:
     bidi_workaround:   Work around buggy terminals without bidirectional text
                        support, using fridibi
     debug_printtraffic:Print out sent and received HTTP traffic
     bidi_workaround:   Work around buggy terminals without bidirectional text
                        support, using fridibi
     debug_printtraffic:Print out sent and received HTTP traffic

-    include_ads:       Download ads as well (deprecated)

     default_search:    Prepend this string if an input url is not valid.
                        'auto' for elaborate guessing
     encoding:          Use this encoding instead of the system-specified.
     default_search:    Prepend this string if an input url is not valid.
                        'auto' for elaborate guessing
     encoding:          Use this encoding instead of the system-specified.

-    extract_flat:      Do not resolve URLs, return the immediate result.
-                       Pass in 'in_playlist' to only show this behavior for
-                       playlist items.
+    extract_flat:      Whether to resolve and process url_results further
+                       * False:     Always process (default)
+                       * True:      Never process
+                       * 'in_playlist': Do not process inside playlist/multi_video
+                       * 'discard': Always process, but don't return the result
+                                    from inside playlist/multi_video
+                       * 'discard_in_playlist': Same as "discard", but only for
+                                    playlists (not multi_video)

     wait_for_video:    If given, wait for scheduled streams to become available.
                        The value should be a tuple containing the range
                        (min_secs, max_secs) to wait between retries
     wait_for_video:    If given, wait for scheduled streams to become available.
                        The value should be a tuple containing the range
                        (min_secs, max_secs) to wait between retries


@@ -344,10 +340,6 @@ class YoutubeDL:
                        * when: When to run the postprocessor. Allowed values are
                                the entries of utils.POSTPROCESS_WHEN
                                Assumed to be 'post_process' if not given
                        * when: When to run the postprocessor. Allowed values are
                                the entries of utils.POSTPROCESS_WHEN
                                Assumed to be 'post_process' if not given

-    post_hooks:        Deprecated - Register a custom postprocessor instead
-                       A list of functions that get called as the final step
-                       for each video file, after all postprocessors have been
-                       called. The filename will be passed as the only argument.

     progress_hooks:    A list of functions that get called on download
                        progress, with a dictionary with the entries
                        * status: One of "downloading", "error", or "finished".
     progress_hooks:    A list of functions that get called on download
                        progress, with a dictionary with the entries
                        * status: One of "downloading", "error", or "finished".


@@ -382,7 +374,7 @@ class YoutubeDL:
 
                        Progress hooks are guaranteed to be called at least twice
                        (with status "started" and "finished") if the processing is successful.
 
                        Progress hooks are guaranteed to be called at least twice
                        (with status "started" and "finished") if the processing is successful.

-    merge_output_format: Extension to use when merging formats.
+    merge_output_format: "/" separated list of extensions to use when merging formats.

     final_ext:         Expected final extension; used to detect when the file was
                        already downloaded and converted
     fixup:             Automatically correct known faults of the file.
     final_ext:         Expected final extension; used to detect when the file was
                        already downloaded and converted
     fixup:             Automatically correct known faults of the file.


@@ -392,8 +384,6 @@ class YoutubeDL:
                        - "detect_or_warn": check whether we can do anything
                                            about it, warn otherwise (default)
     source_address:    Client-side IP address to bind to.
                        - "detect_or_warn": check whether we can do anything
                                            about it, warn otherwise (default)
     source_address:    Client-side IP address to bind to.

-    call_home:         Boolean, true iff we are allowed to contact the
-                       yt-dlp servers for debugging. (BROKEN)

     sleep_interval_requests: Number of seconds to sleep between requests
                        during extraction
     sleep_interval:    Number of seconds to sleep before each download when
     sleep_interval_requests: Number of seconds to sleep between requests
                        during extraction
     sleep_interval:    Number of seconds to sleep before each download when


@@ -409,12 +399,14 @@ class YoutubeDL:
     sleep_interval_subtitles: Number of seconds to sleep before each subtitle download
     listformats:       Print an overview of available video formats and exit.
     list_thumbnails:   Print a table of all thumbnails and exit.
     sleep_interval_subtitles: Number of seconds to sleep before each subtitle download
     listformats:       Print an overview of available video formats and exit.
     list_thumbnails:   Print a table of all thumbnails and exit.

-    match_filter:      A function that gets called with the info_dict of
-                       every video.
-                       If it returns a message, the video is ignored.
-                       If it returns None, the video is downloaded.
-                       If it returns utils.NO_DEFAULT, the user is interactively
-                       asked whether to download the video.
+    match_filter:      A function that gets called for every video with the signature
+                       (info_dict, *, incomplete: bool) -> Optional[str]
+                       For backward compatibility with youtube-dl, the signature
+                       (info_dict) -> Optional[str] is also allowed.
+                       - If it returns a message, the video is ignored.
+                       - If it returns None, the video is downloaded.
+                       - If it returns utils.NO_DEFAULT, the user is interactively
+                         asked whether to download the video.

                        match_filter_func in utils.py is one example for this.
     no_color:          Do not emit color codes in output.
     geo_bypass:        Bypass geographic restriction via faking X-Forwarded-For
                        match_filter_func in utils.py is one example for this.
     no_color:          Do not emit color codes in output.
     geo_bypass:        Bypass geographic restriction via faking X-Forwarded-For


@@ -426,17 +418,10 @@ class YoutubeDL:
     geo_bypass_ip_block:
                        IP range in CIDR notation that will be used similarly to
                        geo_bypass_country
     geo_bypass_ip_block:
                        IP range in CIDR notation that will be used similarly to
                        geo_bypass_country

-
-    The following options determine which downloader is picked:

     external_downloader: A dictionary of protocol keys and the executable of the
                        external downloader to use for it. The allowed protocols
                        are default|http|ftp|m3u8|dash|rtsp|rtmp|mms.
                        Set the value to 'native' to use the native downloader
     external_downloader: A dictionary of protocol keys and the executable of the
                        external downloader to use for it. The allowed protocols
                        are default|http|ftp|m3u8|dash|rtsp|rtmp|mms.
                        Set the value to 'native' to use the native downloader

-    hls_prefer_native: Deprecated - Use external_downloader = {'m3u8': 'native'}
-                       or {'m3u8': 'ffmpeg'} instead.
-                       Use the native HLS downloader instead of ffmpeg/avconv
-                       if True, otherwise use ffmpeg/avconv if False, otherwise
-                       use downloader suggested by extractor if None.

     compat_opts:       Compatibility options. See "Differences in default behavior".
                        The following options do not work when used through the API:
                        filename, abort-on-error, multistreams, no-live-chat, format-sort
     compat_opts:       Compatibility options. See "Differences in default behavior".
                        The following options do not work when used through the API:
                        filename, abort-on-error, multistreams, no-live-chat, format-sort


@@ -446,17 +431,28 @@ class YoutubeDL:
                        Allowed keys are 'download', 'postprocess',
                        'download-title' (console title) and 'postprocess-title'.
                        The template is mapped on a dictionary with keys 'progress' and 'info'
                        Allowed keys are 'download', 'postprocess',
                        'download-title' (console title) and 'postprocess-title'.
                        The template is mapped on a dictionary with keys 'progress' and 'info'

+    retry_sleep_functions: Dictionary of functions that takes the number of attempts
+                       as argument and returns the time to sleep in seconds.
+                       Allowed keys are 'http', 'fragment', 'file_access'
+    download_ranges:   A callback function that gets called for every video with
+                       the signature (info_dict, ydl) -> Iterable[Section].
+                       Only the returned sections will be downloaded.
+                       Each Section is a dict with the following keys:
+                       * start_time: Start time of the section in seconds
+                       * end_time: End time of the section in seconds
+                       * title: Section title (Optional)
+                       * index: Section number (Optional)
+    force_keyframes_at_cuts: Re-encode the video when downloading ranges to get precise cuts
+    noprogress:        Do not print the progress bar

 
     The following parameters are not used by YoutubeDL itself, they are used by
     the downloader (see yt_dlp/downloader/common.py):
     nopart, updatetime, buffersize, ratelimit, throttledratelimit, min_filesize,
     max_filesize, test, noresizebuffer, retries, file_access_retries, fragment_retries,
 
     The following parameters are not used by YoutubeDL itself, they are used by
     the downloader (see yt_dlp/downloader/common.py):
     nopart, updatetime, buffersize, ratelimit, throttledratelimit, min_filesize,
     max_filesize, test, noresizebuffer, retries, file_access_retries, fragment_retries,

-    continuedl, noprogress, xattr_set_filesize, hls_use_mpegts, http_chunk_size,
+    continuedl, xattr_set_filesize, hls_use_mpegts, http_chunk_size,

     external_downloader_args, concurrent_fragment_downloads.
 
     The following options are used by the post processors:
     external_downloader_args, concurrent_fragment_downloads.
 
     The following options are used by the post processors:

-    prefer_ffmpeg:     If False, use avconv instead of ffmpeg if both are available,
-                       otherwise prefer ffmpeg. (avconv support is deprecated)

     ffmpeg_location:   Location of the ffmpeg/avconv binary; either the path
                        to the binary or its containing directory.
     postprocessor_args: A dictionary of postprocessor/executable keys (in lower case)
     ffmpeg_location:   Location of the ffmpeg/avconv binary; either the path
                        to the binary or its containing directory.
     postprocessor_args: A dictionary of postprocessor/executable keys (in lower case)


@@ -474,14 +470,56 @@ class YoutubeDL:
                        discontinuities such as ad breaks (default: False)
     extractor_args:    A dictionary of arguments to be passed to the extractors.
                        See "EXTRACTOR ARGUMENTS" for details.
                        discontinuities such as ad breaks (default: False)
     extractor_args:    A dictionary of arguments to be passed to the extractors.
                        See "EXTRACTOR ARGUMENTS" for details.

-                       Eg: {'youtube': {'skip': ['dash', 'hls']}}
+                       E.g. {'youtube': {'skip': ['dash', 'hls']}}

     mark_watched:      Mark videos watched (even with --simulate). Only for YouTube
     mark_watched:      Mark videos watched (even with --simulate). Only for YouTube

-    youtube_include_dash_manifest: Deprecated - Use extractor_args instead.
+
+    The following options are deprecated and may be removed in the future:
+
+    playliststart:     - Use playlist_items
+                       Playlist item to start at.
+    playlistend:       - Use playlist_items
+                       Playlist item to end at.
+    playlistreverse:   - Use playlist_items
+                       Download playlist items in reverse order.
+    forceurl:          - Use forceprint
+                       Force printing final URL.
+    forcetitle:        - Use forceprint
+                       Force printing title.
+    forceid:           - Use forceprint
+                       Force printing ID.
+    forcethumbnail:    - Use forceprint
+                       Force printing thumbnail URL.
+    forcedescription:  - Use forceprint
+                       Force printing description.
+    forcefilename:     - Use forceprint
+                       Force printing final filename.
+    forceduration:     - Use forceprint
+                       Force printing duration.
+    allsubtitles:      - Use subtitleslangs = ['all']
+                       Downloads all the subtitles of the video
+                       (requires writesubtitles or writeautomaticsub)
+    include_ads:       - Doesn't work
+                       Download ads as well
+    call_home:         - Not implemented
+                       Boolean, true iff we are allowed to contact the
+                       yt-dlp servers for debugging.
+    post_hooks:        - Register a custom postprocessor
+                       A list of functions that get called as the final step
+                       for each video file, after all postprocessors have been
+                       called. The filename will be passed as the only argument.
+    hls_prefer_native: - Use external_downloader = {'m3u8': 'native'} or {'m3u8': 'ffmpeg'}.
+                       Use the native HLS downloader instead of ffmpeg/avconv
+                       if True, otherwise use ffmpeg/avconv if False, otherwise
+                       use downloader suggested by extractor if None.
+    prefer_ffmpeg:     - avconv support is deprecated
+                       If False, use avconv instead of ffmpeg if both are available,
+                       otherwise prefer ffmpeg.
+    youtube_include_dash_manifest: - Use extractor_args

                        If True (default), DASH manifests and related
                        data will be downloaded and processed by extractor.
                        You can reduce network I/O by disabling it if you don't
                        care about DASH. (only for youtube)
                        If True (default), DASH manifests and related
                        data will be downloaded and processed by extractor.
                        You can reduce network I/O by disabling it if you don't
                        care about DASH. (only for youtube)

-    youtube_include_hls_manifest: Deprecated - Use extractor_args instead.
+    youtube_include_hls_manifest: - Use extractor_args

                        If True (default), HLS manifests and related
                        data will be downloaded and processed by extractor.
                        You can reduce network I/O by disabling it if you don't
                        If True (default), HLS manifests and related
                        data will be downloaded and processed by extractor.
                        You can reduce network I/O by disabling it if you don't


@@ -489,7 +527,8 @@ class YoutubeDL:
     """
 
     _NUMERIC_FIELDS = {
     """
 
     _NUMERIC_FIELDS = {

-        'width', 'height', 'tbr', 'abr', 'asr', 'vbr', 'fps', 'filesize', 'filesize_approx',
+        'width', 'height', 'asr', 'audio_channels', 'fps',
+        'tbr', 'abr', 'vbr', 'filesize', 'filesize_approx',

         'timestamp', 'release_timestamp',
         'duration', 'view_count', 'like_count', 'dislike_count', 'repost_count',
         'average_rating', 'comment_count', 'age_limit',
         'timestamp', 'release_timestamp',
         'duration', 'view_count', 'like_count', 'dislike_count', 'repost_count',
         'average_rating', 'comment_count', 'age_limit',


@@ -501,7 +540,7 @@ class YoutubeDL:
     _format_fields = {
         # NB: Keep in sync with the docstring of extractor/common.py
         'url', 'manifest_url', 'manifest_stream_number', 'ext', 'format', 'format_id', 'format_note',
     _format_fields = {
         # NB: Keep in sync with the docstring of extractor/common.py
         'url', 'manifest_url', 'manifest_stream_number', 'ext', 'format', 'format_id', 'format_note',

-        'width', 'height', 'resolution', 'dynamic_range', 'tbr', 'abr', 'acodec', 'asr',
+        'width', 'height', 'resolution', 'dynamic_range', 'tbr', 'abr', 'acodec', 'asr', 'audio_channels',

         'vbr', 'fps', 'vcodec', 'container', 'filesize', 'filesize_approx',
         'player_url', 'protocol', 'fragment_base_url', 'fragments', 'is_from_start',
         'preference', 'language', 'language_preference', 'quality', 'source_preference',
         'vbr', 'fps', 'vcodec', 'container', 'filesize', 'filesize_approx',
         'player_url', 'protocol', 'fragment_base_url', 'fragments', 'is_from_start',
         'preference', 'language', 'language_preference', 'quality', 'source_preference',


@@ -509,9 +548,9 @@ class YoutubeDL:
         'page_url', 'app', 'play_path', 'tc_url', 'flash_version', 'rtmp_live', 'rtmp_conn', 'rtmp_protocol', 'rtmp_real_time'
     }
     _format_selection_exts = {
         'page_url', 'app', 'play_path', 'tc_url', 'flash_version', 'rtmp_live', 'rtmp_conn', 'rtmp_protocol', 'rtmp_real_time'
     }
     _format_selection_exts = {

-        'audio': {'m4a', 'mp3', 'ogg', 'aac'},
-        'video': {'mp4', 'flv', 'webm', '3gp'},
-        'storyboards': {'mhtml'},
+        'audio': set(MEDIA_EXTENSIONS.common_audio),
+        'video': set(MEDIA_EXTENSIONS.common_video + ('3gp', )),
+        'storyboards': set(MEDIA_EXTENSIONS.storyboards),

     }
 
     def __init__(self, params=None, auto_init=True):
     }
 
     def __init__(self, params=None, auto_init=True):


@@ -538,21 +577,30 @@ def __init__(self, params=None, auto_init=True):
         self.cache = Cache(self)
 
         windows_enable_vt_mode()
         self.cache = Cache(self)
 
         windows_enable_vt_mode()

-        self._out_files = {
-            'error': sys.stderr,
-            'print': sys.stderr if self.params.get('logtostderr') else sys.stdout,
-            'console': None if compat_os_name == 'nt' else next(
+        stdout = sys.stderr if self.params.get('logtostderr') else sys.stdout
+        self._out_files = Namespace(
+            out=stdout,
+            error=sys.stderr,
+            screen=sys.stderr if self.params.get('quiet') else stdout,
+            console=None if compat_os_name == 'nt' else next(

                 filter(supports_terminal_sequences, (sys.stderr, sys.stdout)), None)
                 filter(supports_terminal_sequences, (sys.stderr, sys.stdout)), None)

-        }
-        self._out_files['screen'] = sys.stderr if self.params.get('quiet') else self._out_files['print']
-        self._allow_colors = {
-            type_: not self.params.get('no_color') and supports_terminal_sequences(self._out_files[type_])
-            for type_ in ('screen', 'error')
-        }
-
-        if sys.version_info < (3, 6):
-            self.report_warning(
-                'Python version %d.%d is not supported! Please update to Python 3.6 or above' % sys.version_info[:2])
+        )
+        self._allow_colors = Namespace(**{
+            type_: not self.params.get('no_color') and supports_terminal_sequences(stream)
+            for type_, stream in self._out_files.items_ if type_ != 'console'
+        })
+
+        # The code is left like this to be reused for future deprecations
+        MIN_SUPPORTED, MIN_RECOMMENDED = (3, 7), (3, 7)
+        current_version = sys.version_info[:2]
+        if current_version < MIN_RECOMMENDED:
+            msg = ('Support for Python version %d.%d has been deprecated. '
+                   'See  https://github.com/yt-dlp/yt-dlp/issues/3764  for more details.'
+                   '\n                    You will no longer receive updates on this version')
+            if current_version < MIN_SUPPORTED:
+                msg = 'Python version %d.%d is no longer supported'
+            self.deprecation_warning(
+                f'{msg}! Please update to Python %d.%d or above' % (*current_version, *MIN_RECOMMENDED))

 
         if self.params.get('allow_unplayable_formats'):
             self.report_warning(
 
         if self.params.get('allow_unplayable_formats'):
             self.report_warning(


@@ -580,7 +628,8 @@ def check_deprecated(param, option, suggestion):
         for msg in self.params.get('_deprecation_warnings', []):
             self.deprecation_warning(msg)
 
         for msg in self.params.get('_deprecation_warnings', []):
             self.deprecation_warning(msg)
 

-        if 'list-formats' in self.params.get('compat_opts', []):
+        self.params['compat_opts'] = set(self.params.get('compat_opts', ()))
+        if 'list-formats' in self.params['compat_opts']:

             self.params['listformats_table'] = False
 
         if 'overwrites' not in self.params and self.params.get('nooverwrites') is not None:
             self.params['listformats_table'] = False
 
         if 'overwrites' not in self.params and self.params.get('nooverwrites') is not None:


@@ -604,15 +653,9 @@ def check_deprecated(param, option, suggestion):
             try:
                 import pty
                 master, slave = pty.openpty()
             try:
                 import pty
                 master, slave = pty.openpty()

-                width = compat_get_terminal_size().columns
-                if width is None:
-                    width_args = []
-                else:
-                    width_args = ['-w', str(width)]
-                sp_kwargs = dict(
-                    stdin=subprocess.PIPE,
-                    stdout=slave,
-                    stderr=self._out_files['error'])
+                width = shutil.get_terminal_size().columns
+                width_args = [] if width is None else ['-w', str(width)]
+                sp_kwargs = {'stdin': subprocess.PIPE, 'stdout': slave, 'stderr': self._out_files.error}

                 try:
                     self._output_process = Popen(['bidiv'] + width_args, **sp_kwargs)
                 except OSError:
                 try:
                     self._output_process = Popen(['bidiv'] + width_args, **sp_kwargs)
                 except OSError:


@@ -641,7 +684,7 @@ def check_deprecated(param, option, suggestion):
                 'Set the LC_ALL environment variable to fix this.')
             self.params['restrictfilenames'] = True
 
                 'Set the LC_ALL environment variable to fix this.')
             self.params['restrictfilenames'] = True
 

-        self.outtmpl_dict = self.parse_outtmpl()
+        self._parse_outtmpl()

 
         # Creating format selector here allows us to catch syntax errors before the extraction
         self.format_selector = (
 
         # Creating format selector here allows us to catch syntax errors before the extraction
         self.format_selector = (


@@ -741,6 +784,7 @@ def add_default_info_extractors(self):
 
     def add_post_processor(self, pp, when='post_process'):
         """Add a PostProcessor object to the end of the chain."""
 
     def add_post_processor(self, pp, when='post_process'):
         """Add a PostProcessor object to the end of the chain."""

+        assert when in POSTPROCESS_WHEN, f'Invalid when={when}'

         self._pps[when].append(pp)
         pp.set_downloader(self)
 
         self._pps[when].append(pp)
         pp.set_downloader(self)
 


@@ -764,11 +808,11 @@ def _bidi_workaround(self, message):
             return message
 
         assert hasattr(self, '_output_process')
             return message
 
         assert hasattr(self, '_output_process')

-        assert isinstance(message, compat_str)
+        assert isinstance(message, str)

         line_count = message.count('\n') + 1
         line_count = message.count('\n') + 1

-        self._output_process.stdin.write((message + '\n').encode('utf-8'))
+        self._output_process.stdin.write((message + '\n').encode())

         self._output_process.stdin.flush()
         self._output_process.stdin.flush()

-        res = ''.join(self._output_channel.readline().decode('utf-8')
+        res = ''.join(self._output_channel.readline().decode()

                       for _ in range(line_count))
         return res[:-len('\n')]
 
                       for _ in range(line_count))
         return res[:-len('\n')]
 


@@ -783,9 +827,9 @@ def to_stdout(self, message, skip_eol=False, quiet=None):
         """Print message to stdout"""
         if quiet is not None:
             self.deprecation_warning('"YoutubeDL.to_stdout" no longer accepts the argument quiet. Use "YoutubeDL.to_screen" instead')
         """Print message to stdout"""
         if quiet is not None:
             self.deprecation_warning('"YoutubeDL.to_stdout" no longer accepts the argument quiet. Use "YoutubeDL.to_screen" instead')

-        self._write_string(
-            '%s%s' % (self._bidi_workaround(message), ('' if skip_eol else '\n')),
-            self._out_files['print'])
+        if skip_eol is not False:
+            self.deprecation_warning('"YoutubeDL.to_stdout" no longer accepts the argument skip_eol. Use "YoutubeDL.to_screen" instead')
+        self._write_string(f'{self._bidi_workaround(message)}\n', self._out_files.out)

 
     def to_screen(self, message, skip_eol=False, quiet=None):
         """Print message to screen if not in quiet mode"""
 
     def to_screen(self, message, skip_eol=False, quiet=None):
         """Print message to screen if not in quiet mode"""


@@ -796,20 +840,20 @@ def to_screen(self, message, skip_eol=False, quiet=None):
             return
         self._write_string(
             '%s%s' % (self._bidi_workaround(message), ('' if skip_eol else '\n')),
             return
         self._write_string(
             '%s%s' % (self._bidi_workaround(message), ('' if skip_eol else '\n')),

-            self._out_files['screen'])
+            self._out_files.screen)

 
     def to_stderr(self, message, only_once=False):
         """Print message to stderr"""
 
     def to_stderr(self, message, only_once=False):
         """Print message to stderr"""

-        assert isinstance(message, compat_str)
+        assert isinstance(message, str)

         if self.params.get('logger'):
             self.params['logger'].error(message)
         else:
         if self.params.get('logger'):
             self.params['logger'].error(message)
         else:

-            self._write_string('%s\n' % self._bidi_workaround(message), self._out_files['error'], only_once=only_once)
+            self._write_string(f'{self._bidi_workaround(message)}\n', self._out_files.error, only_once=only_once)

 
     def _send_console_code(self, code):
 
     def _send_console_code(self, code):

-        if compat_os_name == 'nt' or not self._out_files['console']:
+        if compat_os_name == 'nt' or not self._out_files.console:

             return
             return

-        self._write_string(code, self._out_files['console'])
+        self._write_string(code, self._out_files.console)

 
     def to_console_title(self, message):
         if not self.params.get('consoletitle', False):
 
     def to_console_title(self, message):
         if not self.params.get('consoletitle', False):


@@ -899,13 +943,14 @@ def _format_text(self, handle, allow_colors, text, f, fallback=None, *, test_enc
                 text = fallback
         return format_text(text, f) if allow_colors else text if fallback is None else fallback
 
                 text = fallback
         return format_text(text, f) if allow_colors else text if fallback is None else fallback
 

+    def _format_out(self, *args, **kwargs):
+        return self._format_text(self._out_files.out, self._allow_colors.out, *args, **kwargs)
+

     def _format_screen(self, *args, **kwargs):
     def _format_screen(self, *args, **kwargs):

-        return self._format_text(
-            self._out_files['screen'], self._allow_colors['screen'], *args, **kwargs)
+        return self._format_text(self._out_files.screen, self._allow_colors.screen, *args, **kwargs)

 
     def _format_err(self, *args, **kwargs):
 
     def _format_err(self, *args, **kwargs):

-        return self._format_text(
-            self._out_files['error'], self._allow_colors['error'], *args, **kwargs)
+        return self._format_text(self._out_files.error, self._allow_colors.error, *args, **kwargs)

 
     def report_warning(self, message, only_once=False):
         '''
 
     def report_warning(self, message, only_once=False):
         '''


@@ -936,7 +981,7 @@ def write_debug(self, message, only_once=False):
         '''Log debug message or Print message to stderr'''
         if not self.params.get('verbose', False):
             return
         '''Log debug message or Print message to stderr'''
         if not self.params.get('verbose', False):
             return

-        message = '[debug] %s' % message
+        message = f'[debug] {message}'

         if self.params.get('logger'):
             self.params['logger'].debug(message)
         else:
         if self.params.get('logger'):
             self.params['logger'].debug(message)
         else:


@@ -967,21 +1012,19 @@ def raise_no_formats(self, info, forced=False, *, msg=None):
             self.report_warning(msg)
 
     def parse_outtmpl(self):
             self.report_warning(msg)
 
     def parse_outtmpl(self):

-        outtmpl_dict = self.params.get('outtmpl', {})
-        if not isinstance(outtmpl_dict, dict):
-            outtmpl_dict = {'default': outtmpl_dict}
-        # Remove spaces in the default template
-        if self.params.get('restrictfilenames'):
+        self.deprecation_warning('"YoutubeDL.parse_outtmpl" is deprecated and may be removed in a future version')
+        self._parse_outtmpl()
+        return self.params['outtmpl']
+
+    def _parse_outtmpl(self):
+        sanitize = IDENTITY
+        if self.params.get('restrictfilenames'):  # Remove spaces in the default template

             sanitize = lambda x: x.replace(' - ', ' ').replace(' ', '-')
             sanitize = lambda x: x.replace(' - ', ' ').replace(' ', '-')

-        else:
-            sanitize = lambda x: x
-        outtmpl_dict.update({
-            k: sanitize(v) for k, v in DEFAULT_OUTTMPL.items()
-            if outtmpl_dict.get(k) is None})
-        for _, val in outtmpl_dict.items():
-            if isinstance(val, bytes):
-                self.report_warning('Parameter outtmpl is bytes, but should be a unicode string')
-        return outtmpl_dict
+
+        outtmpl = self.params.setdefault('outtmpl', {})
+        if not isinstance(outtmpl, dict):
+            self.params['outtmpl'] = outtmpl = {'default': outtmpl}
+        outtmpl.update({k: sanitize(v) for k, v in DEFAULT_OUTTMPL.items() if outtmpl.get(k) is None})

 
     def get_output_path(self, dir_type='', filename=None):
         paths = self.params.get('paths', {})
 
     def get_output_path(self, dir_type='', filename=None):
         paths = self.params.get('paths', {})


@@ -1003,7 +1046,7 @@ def _outtmpl_expandpath(outtmpl):
 
         # outtmpl should be expand_path'ed before template dict substitution
         # because meta fields may contain env variables we don't want to
 
         # outtmpl should be expand_path'ed before template dict substitution
         # because meta fields may contain env variables we don't want to

-        # be expanded. For example, for outtmpl "%(title)s.%(ext)s" and
+        # be expanded. E.g. for outtmpl "%(title)s.%(ext)s" and

         # title "Hello $PATH", we don't want `$PATH` to be expanded.
         return expand_path(outtmpl).replace(sep, '')
 
         # title "Hello $PATH", we don't want `$PATH` to be expanded.
         return expand_path(outtmpl).replace(sep, '')
 


@@ -1019,7 +1062,7 @@ def escape_outtmpl(outtmpl):
     def validate_outtmpl(cls, outtmpl):
         ''' @return None or Exception object '''
         outtmpl = re.sub(
     def validate_outtmpl(cls, outtmpl):
         ''' @return None or Exception object '''
         outtmpl = re.sub(

-            STR_FORMAT_RE_TMPL.format('[^)]*', '[ljqBUDS]'),
+            STR_FORMAT_RE_TMPL.format('[^)]*', '[ljhqBUDS]'),

             lambda mobj: f'{mobj.group(0)[:-1]}s',
             cls._outtmpl_expandpath(outtmpl))
         try:
             lambda mobj: f'{mobj.group(0)[:-1]}s',
             cls._outtmpl_expandpath(outtmpl))
         try:


@@ -1032,6 +1075,7 @@ def validate_outtmpl(cls, outtmpl):
     def _copy_infodict(info_dict):
         info_dict = dict(info_dict)
         info_dict.pop('__postprocessors', None)
     def _copy_infodict(info_dict):
         info_dict = dict(info_dict)
         info_dict.pop('__postprocessors', None)

+        info_dict.pop('__pending_error', None)

         return info_dict
 
     def prepare_outtmpl(self, outtmpl, info_dict, sanitize=False):
         return info_dict
 
     def prepare_outtmpl(self, outtmpl, info_dict, sanitize=False):


@@ -1047,7 +1091,7 @@ def prepare_outtmpl(self, outtmpl, info_dict, sanitize=False):
             formatSeconds(info_dict['duration'], '-' if sanitize else ':')
             if info_dict.get('duration', None) is not None
             else None)
             formatSeconds(info_dict['duration'], '-' if sanitize else ':')
             if info_dict.get('duration', None) is not None
             else None)

-        info_dict['autonumber'] = self.params.get('autonumber_start', 1) - 1 + self._num_downloads
+        info_dict['autonumber'] = int(self.params.get('autonumber_start', 1) - 1 + self._num_downloads)

         info_dict['video_autonumber'] = self._num_videos
         if info_dict.get('resolution') is None:
             info_dict['resolution'] = self.format_resolution(info_dict, default=None)
         info_dict['video_autonumber'] = self._num_videos
         if info_dict.get('resolution') is None:
             info_dict['resolution'] = self.format_resolution(info_dict, default=None)


@@ -1061,7 +1105,7 @@ def prepare_outtmpl(self, outtmpl, info_dict, sanitize=False):
         }
 
         TMPL_DICT = {}
         }
 
         TMPL_DICT = {}

-        EXTERNAL_FORMAT_RE = re.compile(STR_FORMAT_RE_TMPL.format('[^)]*', f'[{STR_FORMAT_TYPES}ljqBUDS]'))
+        EXTERNAL_FORMAT_RE = re.compile(STR_FORMAT_RE_TMPL.format('[^)]*', f'[{STR_FORMAT_TYPES}ljhqBUDS]'))

         MATH_FUNCTIONS = {
             '+': float.__add__,
             '-': float.__sub__,
         MATH_FUNCTIONS = {
             '+': float.__add__,
             '-': float.__sub__,


@@ -1069,18 +1113,18 @@ def prepare_outtmpl(self, outtmpl, info_dict, sanitize=False):
         # Field is of the form key1.key2...
         # where keys (except first) can be string, int or slice
         FIELD_RE = r'\w*(?:\.(?:\w+|{num}|{num}?(?::{num}?){{1,2}}))*'.format(num=r'(?:-?\d+)')
         # Field is of the form key1.key2...
         # where keys (except first) can be string, int or slice
         FIELD_RE = r'\w*(?:\.(?:\w+|{num}|{num}?(?::{num}?){{1,2}}))*'.format(num=r'(?:-?\d+)')

-        MATH_FIELD_RE = r'''(?:{field}|{num})'''.format(field=FIELD_RE, num=r'-?\d+(?:.\d+)?')
+        MATH_FIELD_RE = rf'(?:{FIELD_RE}|-?{NUMBER_RE})'

         MATH_OPERATORS_RE = r'(?:%s)' % '|'.join(map(re.escape, MATH_FUNCTIONS.keys()))
         MATH_OPERATORS_RE = r'(?:%s)' % '|'.join(map(re.escape, MATH_FUNCTIONS.keys()))

-        INTERNAL_FORMAT_RE = re.compile(r'''(?x)
+        INTERNAL_FORMAT_RE = re.compile(rf'''(?x)

             (?P<negate>-)?
             (?P<negate>-)?

-            (?P<fields>{field})
-            (?P<maths>(?:{math_op}{math_field})*)
+            (?P<fields>{FIELD_RE})
+            (?P<maths>(?:{MATH_OPERATORS_RE}{MATH_FIELD_RE})*)

             (?:>(?P<strf_format>.+?))?
             (?P<remaining>
                 (?P<alternate>(?<!\\),[^|&)]+)?
                 (?:&(?P<replacement>.*?))?
                 (?:\|(?P<default>.*?))?
             (?:>(?P<strf_format>.+?))?
             (?P<remaining>
                 (?P<alternate>(?<!\\),[^|&)]+)?
                 (?:&(?P<replacement>.*?))?
                 (?:\|(?P<default>.*?))?

-            )$'''.format(field=FIELD_RE, math_op=MATH_OPERATORS_RE, math_field=MATH_FIELD_RE))
+            )$''')

 
         def _traverse_infodict(k):
             k = k.split('.')
 
         def _traverse_infodict(k):
             k = k.split('.')


@@ -1122,6 +1166,9 @@ def get_value(mdict):
             if mdict['strf_format']:
                 value = strftime_or_none(value, mdict['strf_format'].replace('\\,', ','))
 
             if mdict['strf_format']:
                 value = strftime_or_none(value, mdict['strf_format'].replace('\\,', ','))
 

+            # XXX: Workaround for https://github.com/yt-dlp/yt-dlp/issues/4485
+            if sanitize and value == '':
+                value = None

             return value
 
         na = self.params.get('outtmpl_na_placeholder', 'NA')
             return value
 
         na = self.params.get('outtmpl_na_placeholder', 'NA')


@@ -1129,7 +1176,7 @@ def get_value(mdict):
         def filename_sanitizer(key, value, restricted=self.params.get('restrictfilenames')):
             return sanitize_filename(str(value), restricted=restricted, is_id=(
                 bool(re.search(r'(^|[_.])id(\.|$)', key))
         def filename_sanitizer(key, value, restricted=self.params.get('restrictfilenames')):
             return sanitize_filename(str(value), restricted=restricted, is_id=(
                 bool(re.search(r'(^|[_.])id(\.|$)', key))

-                if 'filename-sanitization' in self.params.get('compat_opts', [])
+                if 'filename-sanitization' in self.params['compat_opts']

                 else NO_DEFAULT))
 
         sanitizer = sanitize if callable(sanitize) else filename_sanitizer
                 else NO_DEFAULT))
 
         sanitizer = sanitize if callable(sanitize) else filename_sanitizer


@@ -1170,11 +1217,13 @@ def create_key(outer_mobj):
                 value, fmt = delim.join(map(str, variadic(value, allowed_types=(str, bytes)))), str_fmt
             elif fmt[-1] == 'j':  # json
                 value, fmt = json.dumps(value, default=_dumpjson_default, indent=4 if '#' in flags else None), str_fmt
                 value, fmt = delim.join(map(str, variadic(value, allowed_types=(str, bytes)))), str_fmt
             elif fmt[-1] == 'j':  # json
                 value, fmt = json.dumps(value, default=_dumpjson_default, indent=4 if '#' in flags else None), str_fmt

+            elif fmt[-1] == 'h':  # html
+                value, fmt = escapeHTML(value), str_fmt

             elif fmt[-1] == 'q':  # quoted
                 value = map(str, variadic(value) if '#' in flags else [value])
                 value, fmt = ' '.join(map(compat_shlex_quote, value)), str_fmt
             elif fmt[-1] == 'B':  # bytes
             elif fmt[-1] == 'q':  # quoted
                 value = map(str, variadic(value) if '#' in flags else [value])
                 value, fmt = ' '.join(map(compat_shlex_quote, value)), str_fmt
             elif fmt[-1] == 'B':  # bytes

-                value = f'%{str_fmt}'.encode() % str(value).encode('utf-8')
+                value = f'%{str_fmt}'.encode() % str(value).encode()

                 value, fmt = value.decode('utf-8', 'ignore'), 's'
             elif fmt[-1] == 'U':  # unicode normalized
                 value, fmt = unicodedata.normalize(
                 value, fmt = value.decode('utf-8', 'ignore'), 's'
             elif fmt[-1] == 'U':  # unicode normalized
                 value, fmt = unicodedata.normalize(


@@ -1218,7 +1267,7 @@ def evaluate_outtmpl(self, outtmpl, info_dict, *args, **kwargs):
     def _prepare_filename(self, info_dict, *, outtmpl=None, tmpl_type=None):
         assert None in (outtmpl, tmpl_type), 'outtmpl and tmpl_type are mutually exclusive'
         if outtmpl is None:
     def _prepare_filename(self, info_dict, *, outtmpl=None, tmpl_type=None):
         assert None in (outtmpl, tmpl_type), 'outtmpl and tmpl_type are mutually exclusive'
         if outtmpl is None:

-            outtmpl = self.outtmpl_dict.get(tmpl_type or 'default', self.outtmpl_dict['default'])
+            outtmpl = self.params['outtmpl'].get(tmpl_type or 'default', self.params['outtmpl']['default'])

         try:
             outtmpl = self._outtmpl_expandpath(outtmpl)
             filename = self.evaluate_outtmpl(outtmpl, info_dict, True)
         try:
             outtmpl = self._outtmpl_expandpath(outtmpl)
             filename = self.evaluate_outtmpl(outtmpl, info_dict, True)


@@ -1269,7 +1318,7 @@ def prepare_filename(self, info_dict, dir_type='', *, outtmpl=None, warn=False):
     def _match_entry(self, info_dict, incomplete=False, silent=False):
         """ Returns None if the file should be downloaded """
 
     def _match_entry(self, info_dict, incomplete=False, silent=False):
         """ Returns None if the file should be downloaded """
 

-        video_title = info_dict.get('title', info_dict.get('id', 'video'))
+        video_title = info_dict.get('title', info_dict.get('id', 'entry'))

 
         def check_filter():
             if 'title' in info_dict:
 
         def check_filter():
             if 'title' in info_dict:


@@ -1315,7 +1364,6 @@ def check_filter():
                             return None
                         elif reply == 'n':
                             return f'Skipping {video_title}'
                             return None
                         elif reply == 'n':
                             return f'Skipping {video_title}'

-                    return True

                 elif ret is not None:
                     return ret
             return None
                 elif ret is not None:
                     return ret
             return None


@@ -1385,7 +1433,7 @@ def extract_info(self, url, download=True, ie_key=None, extra_info=None,
         else:
             self.report_error('no suitable InfoExtractor for URL %s' % url)
 
         else:
             self.report_error('no suitable InfoExtractor for URL %s' % url)
 

-    def __handle_extraction_exceptions(func):
+    def _handle_extraction_exceptions(func):

         @functools.wraps(func)
         def wrapper(self, *args, **kwargs):
             while True:
         @functools.wraps(func)
         def wrapper(self, *args, **kwargs):
             while True:


@@ -1417,7 +1465,7 @@ def wrapper(self, *args, **kwargs):
                 break
         return wrapper
 
                 break
         return wrapper
 

-    def _wait_for_video(self, ie_result):
+    def _wait_for_video(self, ie_result={}):

         if (not self.params.get('wait_for_video')
                 or ie_result.get('_type', 'video') != 'video'
                 or ie_result.get('formats') or ie_result.get('url')):
         if (not self.params.get('wait_for_video')
                 or ie_result.get('_type', 'video') != 'video'
                 or ie_result.get('formats') or ie_result.get('url')):


@@ -1428,7 +1476,12 @@ def _wait_for_video(self, ie_result):
 
         def progress(msg):
             nonlocal last_msg
 
         def progress(msg):
             nonlocal last_msg

-            self.to_screen(msg + ' ' * (len(last_msg) - len(msg)) + '\r', skip_eol=True)
+            full_msg = f'{msg}\n'
+            if not self.params.get('noprogress'):
+                full_msg = msg + ' ' * (len(last_msg) - len(msg)) + '\r'
+            elif last_msg:
+                return
+            self.to_screen(full_msg, skip_eol=True)

             last_msg = msg
 
         min_wait, max_wait = self.params.get('wait_for_video')
             last_msg = msg
 
         min_wait, max_wait = self.params.get('wait_for_video')


@@ -1436,7 +1489,7 @@ def progress(msg):
         if diff is None and ie_result.get('live_status') == 'is_upcoming':
             diff = round(random.uniform(min_wait, max_wait) if (max_wait and min_wait) else (max_wait or min_wait), 0)
             self.report_warning('Release time of video is not known')
         if diff is None and ie_result.get('live_status') == 'is_upcoming':
             diff = round(random.uniform(min_wait, max_wait) if (max_wait and min_wait) else (max_wait or min_wait), 0)
             self.report_warning('Release time of video is not known')

-        elif (diff or 0) <= 0:
+        elif ie_result and (diff or 0) <= 0:

             self.report_warning('Video should already be available according to extracted info')
         diff = min(max(diff or 0, min_wait or 0), max_wait or float('inf'))
         self.to_screen(f'[wait] Waiting for {format_dur(diff)} - Press Ctrl+C to try now')
             self.report_warning('Video should already be available according to extracted info')
         diff = min(max(diff or 0, min_wait or 0), max_wait or float('inf'))
         self.to_screen(f'[wait] Waiting for {format_dur(diff)} - Press Ctrl+C to try now')


@@ -1458,10 +1511,18 @@ def progress(msg):
                 self.to_screen('')
             raise
 
                 self.to_screen('')
             raise
 

-    @__handle_extraction_exceptions
+    @_handle_extraction_exceptions

     def __extract_info(self, url, ie, download, extra_info, process):
     def __extract_info(self, url, ie, download, extra_info, process):

-        ie_result = ie.extract(url)
+        try:
+            ie_result = ie.extract(url)
+        except UserNotLive as e:
+            if process:
+                if self.params.get('wait_for_video'):
+                    self.report_warning(e)
+                self._wait_for_video()
+            raise

         if ie_result is None:  # Finished already (backwards compatibility; listformats and friends should be moved here)
         if ie_result is None:  # Finished already (backwards compatibility; listformats and friends should be moved here)

+            self.report_warning(f'Extractor {ie.IE_NAME} returned nothing{bug_reports_message()}')

             return
         if isinstance(ie_result, list):
             # Backwards compatibility: old IE result format
             return
         if isinstance(ie_result, list):
             # Backwards compatibility: old IE result format


@@ -1509,7 +1570,8 @@ def process_ie_result(self, ie_result, download=True, extra_info=None):
         result_type = ie_result.get('_type', 'video')
 
         if result_type in ('url', 'url_transparent'):
         result_type = ie_result.get('_type', 'video')
 
         if result_type in ('url', 'url_transparent'):

-            ie_result['url'] = sanitize_url(ie_result['url'])
+            ie_result['url'] = sanitize_url(
+                ie_result['url'], scheme='http' if self.params.get('prefer_insecure') else 'https')

             if ie_result.get('original_url'):
                 extra_info.setdefault('original_url', ie_result['original_url'])
 
             if ie_result.get('original_url'):
                 extra_info.setdefault('original_url', ie_result['original_url'])
 


@@ -1524,6 +1586,7 @@ def process_ie_result(self, ie_result, download=True, extra_info=None):
                 self.add_extra_info(info_copy, extra_info)
                 info_copy, _ = self.pre_process(info_copy)
                 self.__forced_printings(info_copy, self.prepare_filename(info_copy), incomplete=True)
                 self.add_extra_info(info_copy, extra_info)
                 info_copy, _ = self.pre_process(info_copy)
                 self.__forced_printings(info_copy, self.prepare_filename(info_copy), incomplete=True)

+                self._raise_pending_errors(info_copy)

                 if self.params.get('force_write_download_archive', False):
                     self.record_download_archive(info_copy)
                 return ie_result
                 if self.params.get('force_write_download_archive', False):
                     self.record_download_archive(info_copy)
                 return ie_result


@@ -1531,10 +1594,11 @@ def process_ie_result(self, ie_result, download=True, extra_info=None):
         if result_type == 'video':
             self.add_extra_info(ie_result, extra_info)
             ie_result = self.process_video_result(ie_result, download=download)
         if result_type == 'video':
             self.add_extra_info(ie_result, extra_info)
             ie_result = self.process_video_result(ie_result, download=download)

+            self._raise_pending_errors(ie_result)

             additional_urls = (ie_result or {}).get('additional_urls')
             if additional_urls:
                 # TODO: Improve MetadataParserPP to allow setting a list
             additional_urls = (ie_result or {}).get('additional_urls')
             if additional_urls:
                 # TODO: Improve MetadataParserPP to allow setting a list

-                if isinstance(additional_urls, compat_str):
+                if isinstance(additional_urls, str):

                     additional_urls = [additional_urls]
                 self.to_screen(
                     '[info] %s: %d additional URL(s) requested' % (ie_result['id'], len(additional_urls)))
                     additional_urls = [additional_urls]
                 self.to_screen(
                     '[info] %s: %d additional URL(s) requested' % (ie_result['id'], len(additional_urls)))


@@ -1565,9 +1629,13 @@ def process_ie_result(self, ie_result, download=True, extra_info=None):
             if not info:
                 return info
 
             if not info:
                 return info
 

+            exempted_fields = {'_type', 'url', 'ie_key'}
+            if not ie_result.get('section_end') and ie_result.get('section_start') is None:
+                # For video clips, the id etc of the clip extractor should be used
+                exempted_fields |= {'id', 'extractor', 'extractor_key'}
+

             new_result = info.copy()
             new_result = info.copy()

-            new_result.update(filter_dict(ie_result, lambda k, v: (
-                v is not None and k not in {'_type', 'url', 'id', 'extractor', 'extractor_key', 'ie_key'})))
+            new_result.update(filter_dict(ie_result, lambda k, v: v is not None and k not in exempted_fields))

 
             # Extracted info may not be a video result (i.e.
             # info.get('_type', 'video') != video) but rather an url or
 
             # Extracted info may not be a video result (i.e.
             # info.get('_type', 'video') != video) but rather an url or


@@ -1626,125 +1694,62 @@ def _ensure_dir_exists(self, path):
         return make_dir(path, self.report_error)
 
     @staticmethod
         return make_dir(path, self.report_error)
 
     @staticmethod

-    def _playlist_infodict(ie_result, **kwargs):
-        return {
-            **ie_result,
+    def _playlist_infodict(ie_result, strict=False, **kwargs):
+        info = {
+            'playlist_count': ie_result.get('playlist_count'),

             'playlist': ie_result.get('title') or ie_result.get('id'),
             'playlist_id': ie_result.get('id'),
             'playlist_title': ie_result.get('title'),
             'playlist_uploader': ie_result.get('uploader'),
             'playlist_uploader_id': ie_result.get('uploader_id'),
             'playlist': ie_result.get('title') or ie_result.get('id'),
             'playlist_id': ie_result.get('id'),
             'playlist_title': ie_result.get('title'),
             'playlist_uploader': ie_result.get('uploader'),
             'playlist_uploader_id': ie_result.get('uploader_id'),

-            'playlist_index': 0,

             **kwargs,
         }
             **kwargs,
         }

+        if strict:
+            return info
+        return {
+            **info,
+            'playlist_index': 0,
+            '__last_playlist_index': max(ie_result['requested_entries'] or (0, 0)),
+            'extractor': ie_result['extractor'],
+            'webpage_url': ie_result['webpage_url'],
+            'webpage_url_basename': url_basename(ie_result['webpage_url']),
+            'webpage_url_domain': get_domain(ie_result['webpage_url']),
+            'extractor_key': ie_result['extractor_key'],
+        }

 
     def __process_playlist(self, ie_result, download):
 
     def __process_playlist(self, ie_result, download):

-        # We process each entry in the playlist
-        playlist = ie_result.get('title') or ie_result.get('id')
-        self.to_screen('[download] Downloading playlist: %s' % playlist)
-
-        if 'entries' not in ie_result:
-            raise EntryNotInPlaylist('There are no entries')
-
-        MissingEntry = object()
-        incomplete_entries = bool(ie_result.get('requested_entries'))
-        if incomplete_entries:
-            def fill_missing_entries(entries, indices):
-                ret = [MissingEntry] * max(indices)
-                for i, entry in zip(indices, entries):
-                    ret[i - 1] = entry
-                return ret
-            ie_result['entries'] = fill_missing_entries(ie_result['entries'], ie_result['requested_entries'])
-
-        playlist_results = []
-
-        playliststart = self.params.get('playliststart', 1)
-        playlistend = self.params.get('playlistend')
-        # For backwards compatibility, interpret -1 as whole list
-        if playlistend == -1:
-            playlistend = None
-
-        playlistitems_str = self.params.get('playlist_items')
-        playlistitems = None
-        if playlistitems_str is not None:
-            def iter_playlistitems(format):
-                for string_segment in format.split(','):
-                    if '-' in string_segment:
-                        start, end = string_segment.split('-')
-                        for item in range(int(start), int(end) + 1):
-                            yield int(item)
-                    else:
-                        yield int(string_segment)
-            playlistitems = orderedSet(iter_playlistitems(playlistitems_str))
-
-        ie_entries = ie_result['entries']
-        if isinstance(ie_entries, list):
-            playlist_count = len(ie_entries)
-            msg = f'Collected {playlist_count} videos; downloading %d of them'
-            ie_result['playlist_count'] = ie_result.get('playlist_count') or playlist_count
+        """Process each entry in the playlist"""
+        assert ie_result['_type'] in ('playlist', 'multi_video')

 
 

-            def get_entry(i):
-                return ie_entries[i - 1]
-        else:
-            msg = 'Downloading %d videos'
-            if not isinstance(ie_entries, (PagedList, LazyList)):
-                ie_entries = LazyList(ie_entries)
-            elif isinstance(ie_entries, InAdvancePagedList):
-                if ie_entries._pagesize == 1:
-                    playlist_count = ie_entries._pagecount
-
-            def get_entry(i):
-                return YoutubeDL.__handle_extraction_exceptions(
-                    lambda self, i: ie_entries[i - 1]
-                )(self, i)
-
-        entries, broken = [], False
-        items = playlistitems if playlistitems is not None else itertools.count(playliststart)
-        for i in items:
-            if i == 0:
-                continue
-            if playlistitems is None and playlistend is not None and playlistend < i:
-                break
-            entry = None
-            try:
-                entry = get_entry(i)
-                if entry is MissingEntry:
-                    raise EntryNotInPlaylist()
-            except (IndexError, EntryNotInPlaylist):
-                if incomplete_entries:
-                    raise EntryNotInPlaylist(f'Entry {i} cannot be found')
-                elif not playlistitems:
-                    break
-            entries.append(entry)
-            try:
-                if entry is not None:
-                    # TODO: Add auto-generated fields
-                    self._match_entry(entry, incomplete=True, silent=True)
-            except (ExistingVideoReached, RejectedVideoReached):
-                broken = True
-                break
-        ie_result['entries'] = entries
+        common_info = self._playlist_infodict(ie_result, strict=True)
+        title = common_info.get('playlist') or '<Untitled>'
+        if self._match_entry(common_info, incomplete=True) is not None:
+            return
+        self.to_screen(f'[download] Downloading {ie_result["_type"]}: {title}')

 
 

-        # Save playlist_index before re-ordering
-        entries = [
-            ((playlistitems[i - 1] if playlistitems else i + playliststart - 1), entry)
-            for i, entry in enumerate(entries, 1)
-            if entry is not None]
-        n_entries = len(entries)
+        all_entries = PlaylistEntries(self, ie_result)
+        entries = orderedSet(all_entries.get_requested_items(), lazy=True)

 
 

-        if not (ie_result.get('playlist_count') or broken or playlistitems or playlistend):
-            ie_result['playlist_count'] = n_entries
+        lazy = self.params.get('lazy_playlist')
+        if lazy:
+            resolved_entries, n_entries = [], 'N/A'
+            ie_result['requested_entries'], ie_result['entries'] = None, None
+        else:
+            entries = resolved_entries = list(entries)
+            n_entries = len(resolved_entries)
+            ie_result['requested_entries'], ie_result['entries'] = tuple(zip(*resolved_entries)) or ([], [])
+        if not ie_result.get('playlist_count'):
+            # Better to do this after potentially exhausting entries
+            ie_result['playlist_count'] = all_entries.get_full_count()

 
 

-        if not playlistitems and (playliststart != 1 or playlistend):
-            playlistitems = list(range(playliststart, playliststart + n_entries))
-        ie_result['requested_entries'] = playlistitems
+        extra = self._playlist_infodict(ie_result, n_entries=int_or_none(n_entries))
+        ie_copy = collections.ChainMap(ie_result, extra)

 
         _infojson_written = False
         write_playlist_files = self.params.get('allow_playlist_files', True)
         if write_playlist_files and self.params.get('list_thumbnails'):
             self.list_thumbnails(ie_result)
         if write_playlist_files and not self.params.get('simulate'):
 
         _infojson_written = False
         write_playlist_files = self.params.get('allow_playlist_files', True)
         if write_playlist_files and self.params.get('list_thumbnails'):
             self.list_thumbnails(ie_result)
         if write_playlist_files and not self.params.get('simulate'):

-            ie_copy = self._playlist_infodict(ie_result, n_entries=n_entries)

             _infojson_written = self._write_info_json(
                 'playlist', ie_result, self.prepare_filename(ie_copy, 'pl_infojson'))
             if _infojson_written is None:
             _infojson_written = self._write_info_json(
                 'playlist', ie_result, self.prepare_filename(ie_copy, 'pl_infojson'))
             if _infojson_written is None:


@@ -1753,58 +1758,69 @@ def get_entry(i):
                                        self.prepare_filename(ie_copy, 'pl_description')) is None:
                 return
             # TODO: This should be passed to ThumbnailsConvertor if necessary
                                        self.prepare_filename(ie_copy, 'pl_description')) is None:
                 return
             # TODO: This should be passed to ThumbnailsConvertor if necessary

-            self._write_thumbnails('playlist', ie_copy, self.prepare_filename(ie_copy, 'pl_thumbnail'))
-
-        if self.params.get('playlistreverse', False):
-            entries = entries[::-1]
-        if self.params.get('playlistrandom', False):
+            self._write_thumbnails('playlist', ie_result, self.prepare_filename(ie_copy, 'pl_thumbnail'))
+
+        if lazy:
+            if self.params.get('playlistreverse') or self.params.get('playlistrandom'):
+                self.report_warning('playlistreverse and playlistrandom are not supported with lazy_playlist', only_once=True)
+        elif self.params.get('playlistreverse'):
+            entries.reverse()
+        elif self.params.get('playlistrandom'):

             random.shuffle(entries)
 
             random.shuffle(entries)
 

-        x_forwarded_for = ie_result.get('__x_forwarded_for_ip')
+        self.to_screen(f'[{ie_result["extractor"]}] Playlist {title}: Downloading {n_entries} videos'
+                       f'{format_field(ie_result, "playlist_count", " of %s")}')
+
+        keep_resolved_entries = self.params.get('extract_flat') != 'discard'
+        if self.params.get('extract_flat') == 'discard_in_playlist':
+            keep_resolved_entries = ie_result['_type'] != 'playlist'
+        if keep_resolved_entries:
+            self.write_debug('The information of all playlist entries will be held in memory')

 
 

-        self.to_screen(f'[{ie_result["extractor"]}] playlist {playlist}: {msg % n_entries}')

         failures = 0
         max_failures = self.params.get('skip_playlist_after_errors') or float('inf')
         failures = 0
         max_failures = self.params.get('skip_playlist_after_errors') or float('inf')

-        for i, entry_tuple in enumerate(entries, 1):
-            playlist_index, entry = entry_tuple
-            if 'playlist-index' in self.params.get('compat_opts', []):
-                playlist_index = playlistitems[i - 1] if playlistitems else i + playliststart - 1
-            self.to_screen('[download] Downloading video %s of %s' % (
-                self._format_screen(i, self.Styles.ID), self._format_screen(n_entries, self.Styles.EMPHASIS)))
-            # This __x_forwarded_for_ip thing is a bit ugly but requires
-            # minimal changes
-            if x_forwarded_for:
-                entry['__x_forwarded_for_ip'] = x_forwarded_for
-            extra = {
-                'n_entries': n_entries,
-                '__last_playlist_index': max(playlistitems) if playlistitems else (playlistend or n_entries),
-                'playlist_count': ie_result.get('playlist_count'),
+        for i, (playlist_index, entry) in enumerate(entries):
+            if lazy:
+                resolved_entries.append((playlist_index, entry))
+            if not entry:
+                continue
+
+            entry['__x_forwarded_for_ip'] = ie_result.get('__x_forwarded_for_ip')
+            if not lazy and 'playlist-index' in self.params.get('compat_opts', []):
+                playlist_index = ie_result['requested_entries'][i]
+
+            entry_copy = collections.ChainMap(entry, {
+                **common_info,
+                'n_entries': int_or_none(n_entries),

                 'playlist_index': playlist_index,
                 'playlist_index': playlist_index,

-                'playlist_autonumber': i,
-                'playlist': playlist,
-                'playlist_id': ie_result.get('id'),
-                'playlist_title': ie_result.get('title'),
-                'playlist_uploader': ie_result.get('uploader'),
-                'playlist_uploader_id': ie_result.get('uploader_id'),
-                'extractor': ie_result['extractor'],
-                'webpage_url': ie_result['webpage_url'],
-                'webpage_url_basename': url_basename(ie_result['webpage_url']),
-                'webpage_url_domain': get_domain(ie_result['webpage_url']),
-                'extractor_key': ie_result['extractor_key'],
-            }
+                'playlist_autonumber': i + 1,
+            })

 
 

-            if self._match_entry(entry, incomplete=True) is not None:
+            if self._match_entry(entry_copy, incomplete=True) is not None:
+                # For compatabilty with youtube-dl. See https://github.com/yt-dlp/yt-dlp/issues/4369
+                resolved_entries[i] = (playlist_index, NO_DEFAULT)

                 continue
 
                 continue
 

+            self.to_screen('[download] Downloading video %s of %s' % (
+                self._format_screen(i + 1, self.Styles.ID), self._format_screen(n_entries, self.Styles.EMPHASIS)))
+
+            extra.update({
+                'playlist_index': playlist_index,
+                'playlist_autonumber': i + 1,
+            })

             entry_result = self.__process_iterable_entry(entry, download, extra)
             if not entry_result:
                 failures += 1
             if failures >= max_failures:
                 self.report_error(
             entry_result = self.__process_iterable_entry(entry, download, extra)
             if not entry_result:
                 failures += 1
             if failures >= max_failures:
                 self.report_error(

-                    'Skipping the remaining entries in playlist "%s" since %d items failed extraction' % (playlist, failures))
+                    f'Skipping the remaining entries in playlist "{title}" since {failures} items failed extraction')

                 break
                 break

-            playlist_results.append(entry_result)
-        ie_result['entries'] = playlist_results
+            if keep_resolved_entries:
+                resolved_entries[i] = (playlist_index, entry_result)
+
+        # Update with processed data
+        ie_result['requested_entries'] = [i for i, e in resolved_entries if e is not NO_DEFAULT]
+        ie_result['entries'] = [e for _, e in resolved_entries if e is not NO_DEFAULT]

 
         # Write the updated info to json
         if _infojson_written is True and self._write_info_json(
 
         # Write the updated info to json
         if _infojson_written is True and self._write_info_json(


@@ -1813,10 +1829,10 @@ def get_entry(i):
             return
 
         ie_result = self.run_all_pps('playlist', ie_result)
             return
 
         ie_result = self.run_all_pps('playlist', ie_result)

-        self.to_screen(f'[download] Finished downloading playlist: {playlist}')
+        self.to_screen(f'[download] Finished downloading playlist: {title}')

         return ie_result
 
         return ie_result
 

-    @__handle_extraction_exceptions
+    @_handle_extraction_exceptions

     def __process_iterable_entry(self, entry, download, extra_info):
         return self.process_ie_result(
             entry, download=download, extra_info=extra_info)
     def __process_iterable_entry(self, entry, download, extra_info):
         return self.process_ie_result(
             entry, download=download, extra_info=extra_info)


@@ -1898,7 +1914,7 @@ def _check_formats(self, formats):
             temp_file.close()
             try:
                 success, _ = self.dl(temp_file.name, f, test=True)
             temp_file.close()
             try:
                 success, _ = self.dl(temp_file.name, f, test=True)

-            except (DownloadError, IOError, OSError, ValueError) + network_exceptions:
+            except (DownloadError, OSError, ValueError) + network_exceptions:

                 success = False
             finally:
                 if os.path.exists(temp_file.name):
                 success = False
             finally:
                 if os.path.exists(temp_file.name):


@@ -1922,12 +1938,12 @@ def can_merge():
             and download
             and (
                 not can_merge()
             and download
             and (
                 not can_merge()

-                or info_dict.get('is_live', False)
-                or self.outtmpl_dict['default'] == '-'))
+                or info_dict.get('is_live') and not self.params.get('live_from_start')
+                or self.params['outtmpl']['default'] == '-'))

         compat = (
             prefer_best
             or self.params.get('allow_multiple_audio_streams', False)
         compat = (
             prefer_best
             or self.params.get('allow_multiple_audio_streams', False)

-            or 'format-spec' in self.params.get('compat_opts', []))
+            or 'format-spec' in self.params['compat_opts'])

 
         return (
             'best/bestvideo+bestaudio' if prefer_best
 
         return (
             'best/bestvideo+bestaudio' if prefer_best


@@ -1961,8 +1977,8 @@ def _parse_filter(tokens):
                     filter_parts.append(string)
 
         def _remove_unused_ops(tokens):
                     filter_parts.append(string)
 
         def _remove_unused_ops(tokens):

-            # Remove operators that we don't use and join them with the surrounding strings
-            # for example: 'mp4' '-' 'baseline' '-' '16x9' is converted to 'mp4-baseline-16x9'
+            # Remove operators that we don't use and join them with the surrounding strings.
+            # E.g. 'mp4' '-' 'baseline' '-' '16x9' is converted to 'mp4-baseline-16x9'

             ALLOWED_OPS = ('/', '+', ',', '(', ')')
             last_string, last_start, last_end, last_line = None, None, None, None
             for type, string, start, end, line in tokens:
             ALLOWED_OPS = ('/', '+', ',', '(', ')')
             last_string, last_start, last_end, last_line = None, None, None, None
             for type, string, start, end, line in tokens:


@@ -2078,14 +2094,13 @@ def _merge(formats_pair):
             the_only_video = video_fmts[0] if len(video_fmts) == 1 else None
             the_only_audio = audio_fmts[0] if len(audio_fmts) == 1 else None
 
             the_only_video = video_fmts[0] if len(video_fmts) == 1 else None
             the_only_audio = audio_fmts[0] if len(audio_fmts) == 1 else None
 

-            output_ext = self.params.get('merge_output_format')
-            if not output_ext:
-                if the_only_video:
-                    output_ext = the_only_video['ext']
-                elif the_only_audio and not video_fmts:
-                    output_ext = the_only_audio['ext']
-                else:
-                    output_ext = 'mkv'
+            output_ext = get_compatible_ext(
+                vcodecs=[f.get('vcodec') for f in video_fmts],
+                acodecs=[f.get('acodec') for f in audio_fmts],
+                vexts=[f['ext'] for f in video_fmts],
+                aexts=[f['ext'] for f in audio_fmts],
+                preferences=(try_call(lambda: self.params['merge_output_format'].split('/'))
+                             or self.params.get('prefer_free_formats') and ('webm', 'mkv')))

 
             filtered = lambda *keys: filter(None, (traverse_obj(fmt, *keys) for fmt in formats_info))
 
 
             filtered = lambda *keys: filter(None, (traverse_obj(fmt, *keys) for fmt in formats_info))
 


@@ -2118,6 +2133,7 @@ def _merge(formats_pair):
                     'acodec': the_only_audio.get('acodec'),
                     'abr': the_only_audio.get('abr'),
                     'asr': the_only_audio.get('asr'),
                     'acodec': the_only_audio.get('acodec'),
                     'abr': the_only_audio.get('abr'),
                     'asr': the_only_audio.get('asr'),

+                    'audio_channels': the_only_audio.get('audio_channels')

                 })
 
             return new_dict
                 })
 
             return new_dict


@@ -2236,7 +2252,7 @@ def final_selector(ctx):
                 return selector_function(ctx_copy)
             return final_selector
 
                 return selector_function(ctx_copy)
             return final_selector
 

-        stream = io.BytesIO(format_spec.encode('utf-8'))
+        stream = io.BytesIO(format_spec.encode())

         try:
             tokens = list(_remove_unused_ops(tokenize.tokenize(stream.readline)))
         except tokenize.TokenError:
         try:
             tokens = list(_remove_unused_ops(tokenize.tokenize(stream.readline)))
         except tokenize.TokenError:


@@ -2268,7 +2284,7 @@ def restore_last_token(self):
     def _calc_headers(self, info_dict):
         res = merge_headers(self.params['http_headers'], info_dict.get('http_headers') or {})
 
     def _calc_headers(self, info_dict):
         res = merge_headers(self.params['http_headers'], info_dict.get('http_headers') or {})
 

-        cookies = self._calc_cookies(info_dict)
+        cookies = self._calc_cookies(info_dict['url'])

         if cookies:
             res['Cookie'] = cookies
 
         if cookies:
             res['Cookie'] = cookies
 


@@ -2279,8 +2295,8 @@ def _calc_headers(self, info_dict):
 
         return res
 
 
         return res
 

-    def _calc_cookies(self, info_dict):
-        pr = sanitized_Request(info_dict['url'])
+    def _calc_cookies(self, url):
+        pr = sanitized_Request(url)

         self.cookiejar.add_cookie_header(pr)
         return pr.get_header('Cookie')
 
         self.cookiejar.add_cookie_header(pr)
         return pr.get_header('Cookie')
 


@@ -2328,13 +2344,17 @@ def _fill_common_fields(self, info_dict, is_video=True):
         # TODO: move sanitization here
         if is_video:
             # playlists are allowed to lack "title"
         # TODO: move sanitization here
         if is_video:
             # playlists are allowed to lack "title"

-            info_dict['fulltitle'] = info_dict.get('title')
-            if 'title' not in info_dict:
+            title = info_dict.get('title', NO_DEFAULT)
+            if title is NO_DEFAULT:

                 raise ExtractorError('Missing "title" field in extractor result',
                                      video_id=info_dict['id'], ie=info_dict['extractor'])
                 raise ExtractorError('Missing "title" field in extractor result',
                                      video_id=info_dict['id'], ie=info_dict['extractor'])

-            elif not info_dict.get('title'):
-                self.report_warning('Extractor failed to obtain "title". Creating a generic title instead')
-                info_dict['title'] = f'{info_dict["extractor"]} video #{info_dict["id"]}'
+            info_dict['fulltitle'] = title
+            if not title:
+                if title == '':
+                    self.write_debug('Extractor gave empty title. Creating a generic title')
+                else:
+                    self.report_warning('Extractor failed to obtain "title". Creating a generic title instead')
+                info_dict['title'] = f'{info_dict["extractor"].replace(":", "-")} video #{info_dict["id"]}'

 
         if info_dict.get('duration') is not None:
             info_dict['duration_string'] = formatSeconds(info_dict['duration'])
 
         if info_dict.get('duration') is not None:
             info_dict['duration_string'] = formatSeconds(info_dict['duration'])


@@ -2374,6 +2394,11 @@ def _fill_common_fields(self, info_dict, is_video=True):
             if info_dict.get('%s_number' % field) is not None and not info_dict.get(field):
                 info_dict[field] = '%s %d' % (field.capitalize(), info_dict['%s_number' % field])
 
             if info_dict.get('%s_number' % field) is not None and not info_dict.get(field):
                 info_dict[field] = '%s %d' % (field.capitalize(), info_dict['%s_number' % field])
 

+    def _raise_pending_errors(self, info):
+        err = info.pop('__pending_error', None)
+        if err:
+            self.report_error(err, tb=False)
+

     def process_video_result(self, info_dict, download=True):
         assert info_dict.get('_type', 'video') == 'video'
         self._num_videos += 1
     def process_video_result(self, info_dict, download=True):
         assert info_dict.get('_type', 'video') == 'video'
         self._num_videos += 1


@@ -2390,10 +2415,10 @@ def report_force_conversion(field, field_not, conversion):
 
         def sanitize_string_field(info, string_field):
             field = info.get(string_field)
 
         def sanitize_string_field(info, string_field):
             field = info.get(string_field)

-            if field is None or isinstance(field, compat_str):
+            if field is None or isinstance(field, str):

                 return
             report_force_conversion(string_field, 'a string', 'string')
                 return
             report_force_conversion(string_field, 'a string', 'string')

-            info[string_field] = compat_str(field)
+            info[string_field] = str(field)

 
         def sanitize_numeric_fields(info):
             for numeric_field in self._NUMERIC_FIELDS:
 
         def sanitize_numeric_fields(info):
             for numeric_field in self._NUMERIC_FIELDS:


@@ -2405,9 +2430,25 @@ def sanitize_numeric_fields(info):
 
         sanitize_string_field(info_dict, 'id')
         sanitize_numeric_fields(info_dict)
 
         sanitize_string_field(info_dict, 'id')
         sanitize_numeric_fields(info_dict)

+        if info_dict.get('section_end') and info_dict.get('section_start') is not None:
+            info_dict['duration'] = round(info_dict['section_end'] - info_dict['section_start'], 3)

         if (info_dict.get('duration') or 0) <= 0 and info_dict.pop('duration', None):
             self.report_warning('"duration" field is negative, there is an error in extractor')
 
         if (info_dict.get('duration') or 0) <= 0 and info_dict.pop('duration', None):
             self.report_warning('"duration" field is negative, there is an error in extractor')
 

+        chapters = info_dict.get('chapters') or []
+        if chapters and chapters[0].get('start_time'):
+            chapters.insert(0, {'start_time': 0})
+
+        dummy_chapter = {'end_time': 0, 'start_time': info_dict.get('duration')}
+        for idx, (prev, current, next_) in enumerate(zip(
+                (dummy_chapter, *chapters), chapters, (*chapters[1:], dummy_chapter)), 1):
+            if current.get('start_time') is None:
+                current['start_time'] = prev.get('end_time')
+            if not current.get('end_time'):
+                current['end_time'] = next_.get('start_time')
+            if not current.get('title'):
+                current['title'] = f'<Untitled Chapter {idx}>'
+

         if 'playlist' not in info_dict:
             # It isn't part of a playlist
             info_dict['playlist'] = None
         if 'playlist' not in info_dict:
             # It isn't part of a playlist
             info_dict['playlist'] = None


@@ -2453,7 +2494,7 @@ def sanitize_numeric_fields(info):
         info_dict['_has_drm'] = any(f.get('has_drm') for f in formats) or None
         if not self.params.get('allow_unplayable_formats'):
             formats = [f for f in formats if not f.get('has_drm')]
         info_dict['_has_drm'] = any(f.get('has_drm') for f in formats) or None
         if not self.params.get('allow_unplayable_formats'):
             formats = [f for f in formats if not f.get('has_drm')]

-            if info_dict['_has_drm'] and all(
+            if info_dict['_has_drm'] and formats and all(

                     f.get('acodec') == f.get('vcodec') == 'none' for f in formats):
                 self.report_warning(
                     'This video is DRM protected and only images are available for download. '
                     f.get('acodec') == f.get('vcodec') == 'none' for f in formats):
                 self.report_warning(
                     'This video is DRM protected and only images are available for download. '


@@ -2494,7 +2535,7 @@ def is_wellformed(f):
             sanitize_numeric_fields(format)
             format['url'] = sanitize_url(format['url'])
             if not format.get('format_id'):
             sanitize_numeric_fields(format)
             format['url'] = sanitize_url(format['url'])
             if not format.get('format_id'):

-                format['format_id'] = compat_str(i)
+                format['format_id'] = str(i)

             else:
                 # Sanitize format_id from characters used in format selector expression
                 format['format_id'] = re.sub(r'[\s,/+\[\]()]', '_', format['format_id'])
             else:
                 # Sanitize format_id from characters used in format selector expression
                 format['format_id'] = re.sub(r'[\s,/+\[\]()]', '_', format['format_id'])


@@ -2532,7 +2573,7 @@ def is_wellformed(f):
                 format['dynamic_range'] = 'SDR'
             if (info_dict.get('duration') and format.get('tbr')
                     and not format.get('filesize') and not format.get('filesize_approx')):
                 format['dynamic_range'] = 'SDR'
             if (info_dict.get('duration') and format.get('tbr')
                     and not format.get('filesize') and not format.get('filesize_approx')):

-                format['filesize_approx'] = info_dict['duration'] * format['tbr'] * (1024 / 8)
+                format['filesize_approx'] = int(info_dict['duration'] * format['tbr'] * (1024 / 8))

 
             # Add HTTP headers, so that external programs can use them from the
             # json output
 
             # Add HTTP headers, so that external programs can use them from the
             # json output


@@ -2579,7 +2620,7 @@ def is_wellformed(f):
         if list_only:
             # Without this printing, -F --print-json will not work
             self.__forced_printings(info_dict, self.prepare_filename(info_dict), incomplete=True)
         if list_only:
             # Without this printing, -F --print-json will not work
             self.__forced_printings(info_dict, self.prepare_filename(info_dict), incomplete=True)

-            return
+            return info_dict

 
         format_selector = self.format_selector
         if format_selector is None:
 
         format_selector = self.format_selector
         if format_selector is None:


@@ -2620,20 +2661,40 @@ def is_wellformed(f):
             # Process what we can, even without any available formats.
             formats_to_download = [{}]
 
             # Process what we can, even without any available formats.
             formats_to_download = [{}]
 

-        best_format = formats_to_download[-1]
+        requested_ranges = self.params.get('download_ranges')
+        if requested_ranges:
+            requested_ranges = tuple(requested_ranges(info_dict, self))
+
+        best_format, downloaded_formats = formats_to_download[-1], []

         if download:
             if best_format:
         if download:
             if best_format:

-                self.to_screen(
-                    f'[info] {info_dict["id"]}: Downloading {len(formats_to_download)} format(s): '
-                    + ', '.join([f['format_id'] for f in formats_to_download]))
+                def to_screen(*msg):
+                    self.to_screen(f'[info] {info_dict["id"]}: {" ".join(", ".join(variadic(m)) for m in msg)}')
+
+                to_screen(f'Downloading {len(formats_to_download)} format(s):',
+                          (f['format_id'] for f in formats_to_download))
+                if requested_ranges:
+                    to_screen(f'Downloading {len(requested_ranges)} time ranges:',
+                              (f'{int(c["start_time"])}-{int(c["end_time"])}' for c in requested_ranges))

             max_downloads_reached = False
             max_downloads_reached = False

-            for i, fmt in enumerate(formats_to_download):
-                formats_to_download[i] = new_info = self._copy_infodict(info_dict)
+
+            for fmt, chapter in itertools.product(formats_to_download, requested_ranges or [{}]):
+                new_info = self._copy_infodict(info_dict)

                 new_info.update(fmt)
                 new_info.update(fmt)

+                offset, duration = info_dict.get('section_start') or 0, info_dict.get('duration') or float('inf')
+                if chapter or offset:
+                    new_info.update({
+                        'section_start': offset + chapter.get('start_time', 0),
+                        'section_end': offset + min(chapter.get('end_time', duration), duration),
+                        'section_title': chapter.get('title'),
+                        'section_number': chapter.get('index'),
+                    })
+                downloaded_formats.append(new_info)

                 try:
                     self.process_info(new_info)
                 except MaxDownloadsReached:
                     max_downloads_reached = True
                 try:
                     self.process_info(new_info)
                 except MaxDownloadsReached:
                     max_downloads_reached = True

+                self._raise_pending_errors(new_info)

                 # Remove copied info
                 for key, val in tuple(new_info.items()):
                     if info_dict.get(key) == val:
                 # Remove copied info
                 for key, val in tuple(new_info.items()):
                     if info_dict.get(key) == val:


@@ -2641,12 +2702,12 @@ def is_wellformed(f):
                 if max_downloads_reached:
                     break
 
                 if max_downloads_reached:
                     break
 

-            write_archive = {f.get('__write_download_archive', False) for f in formats_to_download}
+            write_archive = {f.get('__write_download_archive', False) for f in downloaded_formats}

             assert write_archive.issubset({True, False, 'ignore'})
             if True in write_archive and False not in write_archive:
                 self.record_download_archive(info_dict)
 
             assert write_archive.issubset({True, False, 'ignore'})
             if True in write_archive and False not in write_archive:
                 self.record_download_archive(info_dict)
 

-            info_dict['requested_downloads'] = formats_to_download
+            info_dict['requested_downloads'] = downloaded_formats

             info_dict = self.run_all_pps('after_video', info_dict)
             if max_downloads_reached:
                 raise MaxDownloadsReached()
             info_dict = self.run_all_pps('after_video', info_dict)
             if max_downloads_reached:
                 raise MaxDownloadsReached()


@@ -2822,7 +2883,7 @@ def dl(self, name, info, subtitle=False, test=False):
             urls = '", "'.join(
                 (f['url'].split(',')[0] + ',<data>' if f['url'].startswith('data:') else f['url'])
                 for f in info.get('requested_formats', []) or [info])
             urls = '", "'.join(
                 (f['url'].split(',')[0] + ',<data>' if f['url'].startswith('data:') else f['url'])
                 for f in info.get('requested_formats', []) or [info])

-            self.write_debug('Invoking downloader on "%s"' % urls)
+            self.write_debug(f'Invoking {fd.FD_NAME} downloader on "{urls}"')

 
         # Note: Ideally info should be a deep-copied so that hooks cannot modify it.
         # But it may contain objects that are not deep-copyable
 
         # Note: Ideally info should be a deep-copied so that hooks cannot modify it.
         # But it may contain objects that are not deep-copyable


@@ -2868,8 +2929,13 @@ def process_info(self, info_dict):
         # Forced printings
         self.__forced_printings(info_dict, full_filename, incomplete=('format' not in info_dict))
 
         # Forced printings
         self.__forced_printings(info_dict, full_filename, incomplete=('format' not in info_dict))
 

+        def check_max_downloads():
+            if self._num_downloads >= float(self.params.get('max_downloads') or 'inf'):
+                raise MaxDownloadsReached()
+

         if self.params.get('simulate'):
             info_dict['__write_download_archive'] = self.params.get('force_write_download_archive')
         if self.params.get('simulate'):
             info_dict['__write_download_archive'] = self.params.get('force_write_download_archive')

+            check_max_downloads()

             return
 
         if full_filename is None:
             return
 
         if full_filename is None:


@@ -2973,12 +3039,8 @@ def replace_info_dict(new_info):
             info_dict.clear()
             info_dict.update(new_info)
 
             info_dict.clear()
             info_dict.update(new_info)
 

-        try:
-            new_info, files_to_move = self.pre_process(info_dict, 'before_dl', files_to_move)
-            replace_info_dict(new_info)
-        except PostProcessingError as err:
-            self.report_error('Preprocessing: %s' % str(err))
-            return
+        new_info, files_to_move = self.pre_process(info_dict, 'before_dl', files_to_move)
+        replace_info_dict(new_info)

 
         if self.params.get('skip_download'):
             info_dict['filepath'] = temp_filename
 
         if self.params.get('skip_download'):
             info_dict['filepath'] = temp_filename


@@ -3000,40 +3062,25 @@ def existing_video_file(*filepaths):
                         info_dict['ext'] = os.path.splitext(file)[1][1:]
                     return file
 
                         info_dict['ext'] = os.path.splitext(file)[1][1:]
                     return file
 

-                success = True
-                if info_dict.get('requested_formats') is not None:
-
-                    def compatible_formats(formats):
-                        # TODO: some formats actually allow this (mkv, webm, ogg, mp4), but not all of them.
-                        video_formats = [format for format in formats if format.get('vcodec') != 'none']
-                        audio_formats = [format for format in formats if format.get('acodec') != 'none']
-                        if len(video_formats) > 2 or len(audio_formats) > 2:
-                            return False
-
-                        # Check extension
-                        exts = {format.get('ext') for format in formats}
-                        COMPATIBLE_EXTS = (
-                            {'mp3', 'mp4', 'm4a', 'm4p', 'm4b', 'm4r', 'm4v', 'ismv', 'isma'},
-                            {'webm'},
-                        )
-                        for ext_sets in COMPATIBLE_EXTS:
-                            if ext_sets.issuperset(exts):
-                                return True
-                        # TODO: Check acodec/vcodec
-                        return False
+                fd, success = None, True
+                if info_dict.get('protocol') or info_dict.get('url'):
+                    fd = get_suitable_downloader(info_dict, self.params, to_stdout=temp_filename == '-')
+                    if fd is not FFmpegFD and (
+                            info_dict.get('section_start') or info_dict.get('section_end')):
+                        msg = ('This format cannot be partially downloaded' if FFmpegFD.available()
+                               else 'You have requested downloading the video partially, but ffmpeg is not installed')
+                        self.report_error(f'{msg}. Aborting')
+                        return

 
 

+                if info_dict.get('requested_formats') is not None:

                     requested_formats = info_dict['requested_formats']
                     old_ext = info_dict['ext']
                     if self.params.get('merge_output_format') is None:
                     requested_formats = info_dict['requested_formats']
                     old_ext = info_dict['ext']
                     if self.params.get('merge_output_format') is None:

-                        if not compatible_formats(requested_formats):
-                            info_dict['ext'] = 'mkv'
-                            self.report_warning(
-                                'Requested formats are incompatible for merge and will be merged into mkv')

                         if (info_dict['ext'] == 'webm'
                                 and info_dict.get('thumbnails')
                                 # check with type instead of pp_key, __name__, or isinstance
                                 # since we dont want any custom PPs to trigger this
                         if (info_dict['ext'] == 'webm'
                                 and info_dict.get('thumbnails')
                                 # check with type instead of pp_key, __name__, or isinstance
                                 # since we dont want any custom PPs to trigger this

-                                and any(type(pp) == EmbedThumbnailPP for pp in self._pps['post_process'])):
+                                and any(type(pp) == EmbedThumbnailPP for pp in self._pps['post_process'])):  # noqa: E721

                             info_dict['ext'] = 'mkv'
                             self.report_warning(
                                 'webm doesn\'t support embedding a thumbnail, mkv will be used')
                             info_dict['ext'] = 'mkv'
                             self.report_warning(
                                 'webm doesn\'t support embedding a thumbnail, mkv will be used')


@@ -3055,10 +3102,8 @@ def correct_ext(filename, ext=new_ext):
                     dl_filename = existing_video_file(full_filename, temp_filename)
                     info_dict['__real_download'] = False
 
                     dl_filename = existing_video_file(full_filename, temp_filename)
                     info_dict['__real_download'] = False
 

-                    downloaded = []

                     merger = FFmpegMergerPP(self)
                     merger = FFmpegMergerPP(self)

-
-                    fd = get_suitable_downloader(info_dict, self.params, to_stdout=temp_filename == '-')
+                    downloaded = []

                     if dl_filename is not None:
                         self.report_file_already_downloaded(dl_filename)
                     elif fd:
                     if dl_filename is not None:
                         self.report_file_already_downloaded(dl_filename)
                     elif fd:


@@ -3138,6 +3183,7 @@ def correct_ext(filename, ext=new_ext):
                 self.report_error(f'content too short (expected {err.expected} bytes and served {err.downloaded})')
                 return
 
                 self.report_error(f'content too short (expected {err.expected} bytes and served {err.downloaded})')
                 return
 

+            self._raise_pending_errors(info_dict)

             if success and full_filename != '-':
 
                 def fixup():
             if success and full_filename != '-':
 
                 def fixup():


@@ -3148,16 +3194,16 @@ def fixup():
                     if fixup_policy in ('ignore', 'never'):
                         return
                     elif fixup_policy == 'warn':
                     if fixup_policy in ('ignore', 'never'):
                         return
                     elif fixup_policy == 'warn':

-                        do_fixup = False
+                        do_fixup = 'warn'

                     elif fixup_policy != 'force':
                         assert fixup_policy in ('detect_or_warn', None)
                         if not info_dict.get('__real_download'):
                             do_fixup = False
 
                     def ffmpeg_fixup(cndn, msg, cls):
                     elif fixup_policy != 'force':
                         assert fixup_policy in ('detect_or_warn', None)
                         if not info_dict.get('__real_download'):
                             do_fixup = False
 
                     def ffmpeg_fixup(cndn, msg, cls):

-                        if not cndn:
+                        if not (do_fixup and cndn):

                             return
                             return

-                        if not do_fixup:
+                        elif do_fixup == 'warn':

                             self.report_warning(f'{vid}: {msg}')
                             return
                         pp = cls(self)
                             self.report_warning(f'{vid}: {msg}')
                             return
                         pp = cls(self)


@@ -3167,30 +3213,32 @@ def ffmpeg_fixup(cndn, msg, cls):
                             self.report_warning(f'{vid}: {msg}. Install ffmpeg to fix this automatically')
 
                     stretched_ratio = info_dict.get('stretched_ratio')
                             self.report_warning(f'{vid}: {msg}. Install ffmpeg to fix this automatically')
 
                     stretched_ratio = info_dict.get('stretched_ratio')

-                    ffmpeg_fixup(
-                        stretched_ratio not in (1, None),
-                        f'Non-uniform pixel ratio {stretched_ratio}',
-                        FFmpegFixupStretchedPP)
-
-                    ffmpeg_fixup(
-                        (info_dict.get('requested_formats') is None
-                         and info_dict.get('container') == 'm4a_dash'
-                         and info_dict.get('ext') == 'm4a'),
-                        'writing DASH m4a. Only some players support this container',
-                        FFmpegFixupM4aPP)
+                    ffmpeg_fixup(stretched_ratio not in (1, None),
+                                 f'Non-uniform pixel ratio {stretched_ratio}',
+                                 FFmpegFixupStretchedPP)

 
                     downloader = get_suitable_downloader(info_dict, self.params) if 'protocol' in info_dict else None
 
                     downloader = get_suitable_downloader(info_dict, self.params) if 'protocol' in info_dict else None

-                    downloader = downloader.__name__ if downloader else None
+                    downloader = downloader.FD_NAME if downloader else None

 
 

-                    if info_dict.get('requested_formats') is None:  # Not necessary if doing merger
-                        ffmpeg_fixup(downloader == 'HlsFD',
+                    ext = info_dict.get('ext')
+                    postprocessed_by_ffmpeg = info_dict.get('requested_formats') or any((
+                        isinstance(pp, FFmpegVideoConvertorPP)
+                        and resolve_recode_mapping(ext, pp.mapping)[0] not in (ext, None)
+                    ) for pp in self._pps['post_process'])
+
+                    if not postprocessed_by_ffmpeg:
+                        ffmpeg_fixup(ext == 'm4a' and info_dict.get('container') == 'm4a_dash',
+                                     'writing DASH m4a. Only some players support this container',
+                                     FFmpegFixupM4aPP)
+                        ffmpeg_fixup(downloader == 'hlsnative' and not self.params.get('hls_use_mpegts')
+                                     or info_dict.get('is_live') and self.params.get('hls_use_mpegts') is None,

                                      'Possible MPEG-TS in MP4 container or malformed AAC timestamps',
                                      FFmpegFixupM3u8PP)
                         ffmpeg_fixup(info_dict.get('is_live') and downloader == 'DashSegmentsFD',
                                      'Possible duplicate MOOV atoms', FFmpegFixupDuplicateMoovPP)
 
                                      'Possible MPEG-TS in MP4 container or malformed AAC timestamps',
                                      FFmpegFixupM3u8PP)
                         ffmpeg_fixup(info_dict.get('is_live') and downloader == 'DashSegmentsFD',
                                      'Possible duplicate MOOV atoms', FFmpegFixupDuplicateMoovPP)
 

-                    ffmpeg_fixup(downloader == 'WebSocketFragmentFD', 'Malformed timestamps detected', FFmpegFixupTimestampPP)
-                    ffmpeg_fixup(downloader == 'WebSocketFragmentFD', 'Malformed duration detected', FFmpegFixupDurationPP)
+                    ffmpeg_fixup(downloader == 'web_socket_fragment', 'Malformed timestamps detected', FFmpegFixupTimestampPP)
+                    ffmpeg_fixup(downloader == 'web_socket_fragment', 'Malformed duration detected', FFmpegFixupDurationPP)

 
                 fixup()
                 try:
 
                 fixup()
                 try:


@@ -3206,15 +3254,10 @@ def ffmpeg_fixup(cndn, msg, cls):
                     return
                 info_dict['__write_download_archive'] = True
 
                     return
                 info_dict['__write_download_archive'] = True
 

+        assert info_dict is original_infodict  # Make sure the info_dict was modified in-place

         if self.params.get('force_write_download_archive'):
             info_dict['__write_download_archive'] = True
         if self.params.get('force_write_download_archive'):
             info_dict['__write_download_archive'] = True

-
-        # Make sure the info_dict was modified in-place
-        assert info_dict is original_infodict
-
-        max_downloads = self.params.get('max_downloads')
-        if max_downloads is not None and self._num_downloads >= int(max_downloads):
-            raise MaxDownloadsReached()
+        check_max_downloads()

 
     def __download_wrapper(self, func):
         @functools.wraps(func)
 
     def __download_wrapper(self, func):
         @functools.wraps(func)


@@ -3223,9 +3266,6 @@ def wrapper(*args, **kwargs):
                 res = func(*args, **kwargs)
             except UnavailableVideoError as e:
                 self.report_error(e)
                 res = func(*args, **kwargs)
             except UnavailableVideoError as e:
                 self.report_error(e)

-            except MaxDownloadsReached as e:
-                self.to_screen(f'[info] {e}')
-                raise

             except DownloadCancelled as e:
                 self.to_screen(f'[info] {e}')
                 if not self.params.get('break_per_url'):
             except DownloadCancelled as e:
                 self.to_screen(f'[info] {e}')
                 if not self.params.get('break_per_url'):


@@ -3239,7 +3279,7 @@ def wrapper(*args, **kwargs):
     def download(self, url_list):
         """Download a given list of URLs."""
         url_list = variadic(url_list)  # Passing a single URL is a common mistake
     def download(self, url_list):
         """Download a given list of URLs."""
         url_list = variadic(url_list)  # Passing a single URL is a common mistake

-        outtmpl = self.outtmpl_dict['default']
+        outtmpl = self.params['outtmpl']['default']

         if (len(url_list) > 1
                 and outtmpl != '-'
                 and '%' not in outtmpl
         if (len(url_list) > 1
                 and outtmpl != '-'
                 and '%' not in outtmpl


@@ -3304,6 +3344,17 @@ def filter_requested_info(info_dict, actually_filter=True):
         ''' Alias of sanitize_info for backward compatibility '''
         return YoutubeDL.sanitize_info(info_dict, actually_filter)
 
         ''' Alias of sanitize_info for backward compatibility '''
         return YoutubeDL.sanitize_info(info_dict, actually_filter)
 

+    def _delete_downloaded_files(self, *files_to_delete, info={}, msg=None):
+        for filename in set(filter(None, files_to_delete)):
+            if msg:
+                self.to_screen(msg % filename)
+            try:
+                os.remove(filename)
+            except OSError:
+                self.report_warning(f'Unable to delete file {filename}')
+            if filename in info.get('__files_to_move', []):  # NB: Delete even if None
+                del info['__files_to_move'][filename]
+

     @staticmethod
     def post_extract(info_dict):
         def actual_post_extract(info_dict):
     @staticmethod
     def post_extract(info_dict):
         def actual_post_extract(info_dict):


@@ -3336,14 +3387,8 @@ def run_pp(self, pp, infodict):
             for f in files_to_delete:
                 infodict['__files_to_move'].setdefault(f, '')
         else:
             for f in files_to_delete:
                 infodict['__files_to_move'].setdefault(f, '')
         else:

-            for old_filename in set(files_to_delete):
-                self.to_screen('Deleting original file %s (pass -k to keep)' % old_filename)
-                try:
-                    os.remove(encodeFilename(old_filename))
-                except OSError:
-                    self.report_warning('Unable to remove downloaded original file')
-                if old_filename in infodict['__files_to_move']:
-                    del infodict['__files_to_move'][old_filename]
+            self._delete_downloaded_files(
+                *files_to_delete, info=infodict, msg='Deleting original file %s (pass -k to keep)')

         return infodict
 
     def run_all_pps(self, key, info, *, additional_pps=None):
         return infodict
 
     def run_all_pps(self, key, info, *, additional_pps=None):


@@ -3355,7 +3400,12 @@ def run_all_pps(self, key, info, *, additional_pps=None):
     def pre_process(self, ie_info, key='pre_process', files_to_move=None):
         info = dict(ie_info)
         info['__files_to_move'] = files_to_move or {}
     def pre_process(self, ie_info, key='pre_process', files_to_move=None):
         info = dict(ie_info)
         info['__files_to_move'] = files_to_move or {}

-        info = self.run_all_pps(key, info)
+        try:
+            info = self.run_all_pps(key, info)
+        except PostProcessingError as err:
+            msg = f'Preprocessing: {err}'
+            info.setdefault('__pending_error', msg)
+            self.report_error(msg, is_error=False)

         return info, info.pop('__files_to_move', None)
 
     def post_process(self, filename, info, files_to_move=None):
         return info, info.pop('__files_to_move', None)
 
     def post_process(self, filename, info, files_to_move=None):


@@ -3385,18 +3435,16 @@ def _make_archive_id(self, info_dict):
                     break
             else:
                 return
                     break
             else:
                 return

-        return f'{extractor.lower()} {video_id}'
+        return make_archive_id(extractor, video_id)

 
     def in_download_archive(self, info_dict):
         fn = self.params.get('download_archive')
         if fn is None:
             return False
 
 
     def in_download_archive(self, info_dict):
         fn = self.params.get('download_archive')
         if fn is None:
             return False
 

-        vid_id = self._make_archive_id(info_dict)
-        if not vid_id:
-            return False  # Incomplete video information
-
-        return vid_id in self.archive
+        vid_ids = [self._make_archive_id(info_dict)]
+        vid_ids.extend(info_dict.get('_old_archive_ids') or [])
+        return any(id_ in self.archive for id_ in vid_ids)

 
     def record_download_archive(self, info_dict):
         fn = self.params.get('download_archive')
 
     def record_download_archive(self, info_dict):
         fn = self.params.get('download_archive')


@@ -3425,7 +3473,7 @@ def format_resolution(format, default='unknown'):
 
     def _list_format_headers(self, *headers):
         if self.params.get('listformats_table', True) is not False:
 
     def _list_format_headers(self, *headers):
         if self.params.get('listformats_table', True) is not False:

-            return [self._format_screen(header, self.Styles.HEADERS) for header in headers]
+            return [self._format_out(header, self.Styles.HEADERS) for header in headers]

         return headers
 
     def _format_note(self, fdict):
         return headers
 
     def _format_note(self, fdict):


@@ -3503,30 +3551,42 @@ def render_formats_table(self, info_dict):
                 ] for f in formats if f.get('preference') is None or f['preference'] >= -1000]
             return render_table(['format code', 'extension', 'resolution', 'note'], table, extra_gap=1)
 
                 ] for f in formats if f.get('preference') is None or f['preference'] >= -1000]
             return render_table(['format code', 'extension', 'resolution', 'note'], table, extra_gap=1)
 

-        delim = self._format_screen('\u2502', self.Styles.DELIM, '|', test_encoding=True)
+        def simplified_codec(f, field):
+            assert field in ('acodec', 'vcodec')
+            codec = f.get(field, 'unknown')
+            if not codec:
+                return 'unknown'
+            elif codec != 'none':
+                return '.'.join(codec.split('.')[:4])
+
+            if field == 'vcodec' and f.get('acodec') == 'none':
+                return 'images'
+            elif field == 'acodec' and f.get('vcodec') == 'none':
+                return ''
+            return self._format_out('audio only' if field == 'vcodec' else 'video only',
+                                    self.Styles.SUPPRESS)
+
+        delim = self._format_out('\u2502', self.Styles.DELIM, '|', test_encoding=True)

         table = [
             [
         table = [
             [

-                self._format_screen(format_field(f, 'format_id'), self.Styles.ID),
+                self._format_out(format_field(f, 'format_id'), self.Styles.ID),

                 format_field(f, 'ext'),
                 format_field(f, func=self.format_resolution, ignore=('audio only', 'images')),
                 format_field(f, 'ext'),
                 format_field(f, func=self.format_resolution, ignore=('audio only', 'images')),

-                format_field(f, 'fps', '\t%d'),
+                format_field(f, 'fps', '\t%d', func=round),

                 format_field(f, 'dynamic_range', '%s', ignore=(None, 'SDR')).replace('HDR', ''),
                 format_field(f, 'dynamic_range', '%s', ignore=(None, 'SDR')).replace('HDR', ''),

+                format_field(f, 'audio_channels', '\t%s'),

                 delim,
                 format_field(f, 'filesize', ' \t%s', func=format_bytes) + format_field(f, 'filesize_approx', '~\t%s', func=format_bytes),
                 delim,
                 format_field(f, 'filesize', ' \t%s', func=format_bytes) + format_field(f, 'filesize_approx', '~\t%s', func=format_bytes),

-                format_field(f, 'tbr', '\t%dk'),
+                format_field(f, 'tbr', '\t%dk', func=round),

                 shorten_protocol_name(f.get('protocol', '')),
                 delim,
                 shorten_protocol_name(f.get('protocol', '')),
                 delim,

-                format_field(f, 'vcodec', default='unknown').replace(
-                    'none', 'images' if f.get('acodec') == 'none'
-                            else self._format_screen('audio only', self.Styles.SUPPRESS)),
-                format_field(f, 'vbr', '\t%dk'),
-                format_field(f, 'acodec', default='unknown').replace(
-                    'none', '' if f.get('vcodec') == 'none'
-                            else self._format_screen('video only', self.Styles.SUPPRESS)),
-                format_field(f, 'abr', '\t%dk'),
-                format_field(f, 'asr', '\t%dHz'),
+                simplified_codec(f, 'vcodec'),
+                format_field(f, 'vbr', '\t%dk', func=round),
+                simplified_codec(f, 'acodec'),
+                format_field(f, 'abr', '\t%dk', func=round),
+                format_field(f, 'asr', '\t%s', func=format_decimal_suffix),

                 join_nonempty(
                 join_nonempty(

-                    self._format_screen('UNSUPPORTED', 'light red') if f.get('ext') in ('f4f', 'f4m') else None,
+                    self._format_out('UNSUPPORTED', 'light red') if f.get('ext') in ('f4f', 'f4m') else None,

                     format_field(f, 'language', '[%s]'),
                     join_nonempty(format_field(f, 'format_note'),
                                   format_field(f, 'container', ignore=(None, f.get('ext'))),
                     format_field(f, 'language', '[%s]'),
                     join_nonempty(format_field(f, 'format_note'),
                                   format_field(f, 'container', ignore=(None, f.get('ext'))),


@@ -3534,12 +3594,12 @@ def render_formats_table(self, info_dict):
                     delim=' '),
             ] for f in formats if f.get('preference') is None or f['preference'] >= -1000]
         header_line = self._list_format_headers(
                     delim=' '),
             ] for f in formats if f.get('preference') is None or f['preference'] >= -1000]
         header_line = self._list_format_headers(

-            'ID', 'EXT', 'RESOLUTION', '\tFPS', 'HDR', delim, '\tFILESIZE', '\tTBR', 'PROTO',
+            'ID', 'EXT', 'RESOLUTION', '\tFPS', 'HDR', 'CH', delim, '\tFILESIZE', '\tTBR', 'PROTO',

             delim, 'VCODEC', '\tVBR', 'ACODEC', '\tABR', '\tASR', 'MORE INFO')
 
         return render_table(
             header_line, table, hide_empty=True,
             delim, 'VCODEC', '\tVBR', 'ACODEC', '\tABR', '\tASR', 'MORE INFO')
 
         return render_table(
             header_line, table, hide_empty=True,

-            delim=self._format_screen('\u2500', self.Styles.DELIM, '-', test_encoding=True))
+            delim=self._format_out('\u2500', self.Styles.DELIM, '-', test_encoding=True))

 
     def render_thumbnails_table(self, info_dict):
         thumbnails = list(info_dict.get('thumbnails') or [])
 
     def render_thumbnails_table(self, info_dict):
         thumbnails = list(info_dict.get('thumbnails') or [])


@@ -3590,18 +3650,25 @@ def print_debug_header(self):
         if not self.params.get('verbose'):
             return
 
         if not self.params.get('verbose'):
             return
 

+        # These imports can be slow. So import them only as needed
+        from .extractor.extractors import _LAZY_LOADER
+        from .extractor.extractors import _PLUGIN_CLASSES as plugin_extractors
+

         def get_encoding(stream):
             ret = str(getattr(stream, 'encoding', 'missing (%s)' % type(stream).__name__))
             if not supports_terminal_sequences(stream):
         def get_encoding(stream):
             ret = str(getattr(stream, 'encoding', 'missing (%s)' % type(stream).__name__))
             if not supports_terminal_sequences(stream):

-                from .compat import WINDOWS_VT_MODE  # Must be imported locally
+                from .utils import WINDOWS_VT_MODE  # Must be imported locally

                 ret += ' (No VT)' if WINDOWS_VT_MODE is False else ' (No ANSI)'
             return ret
 
                 ret += ' (No VT)' if WINDOWS_VT_MODE is False else ' (No ANSI)'
             return ret
 

-        encoding_str = 'Encodings: locale %s, fs %s, out %s, err %s, pref %s' % (
+        encoding_str = 'Encodings: locale %s, fs %s, pref %s, %s' % (

             locale.getpreferredencoding(),
             sys.getfilesystemencoding(),
             locale.getpreferredencoding(),
             sys.getfilesystemencoding(),

-            get_encoding(self._out_files['screen']), get_encoding(self._out_files['error']),
-            self.get_encoding())
+            self.get_encoding(),
+            ', '.join(
+                f'{key} {get_encoding(stream)}' for key, stream in self._out_files.items_
+                if stream is not None and key != 'console')
+        )

 
         logger = self.params.get('logger')
         if logger:
 
         logger = self.params.get('logger')
         if logger:


@@ -3612,6 +3679,8 @@ def get_encoding(stream):
             write_debug = lambda msg: self._write_string(f'[debug] {msg}\n')
 
         source = detect_variant()
             write_debug = lambda msg: self._write_string(f'[debug] {msg}\n')
 
         source = detect_variant()

+        if VARIANT not in (None, 'pip'):
+            source += '*'

         write_debug(join_nonempty(
             'yt-dlp version', __version__,
             f'[{RELEASE_GIT_HEAD}]' if RELEASE_GIT_HEAD else '',
         write_debug(join_nonempty(
             'yt-dlp version', __version__,
             f'[{RELEASE_GIT_HEAD}]' if RELEASE_GIT_HEAD else '',


@@ -3626,34 +3695,22 @@ def get_encoding(stream):
             write_debug('Plugins: %s' % [
                 '%s%s' % (klass.__name__, '' if klass.__name__ == name else f' as {name}')
                 for name, klass in itertools.chain(plugin_extractors.items(), plugin_postprocessors.items())])
             write_debug('Plugins: %s' % [
                 '%s%s' % (klass.__name__, '' if klass.__name__ == name else f' as {name}')
                 for name, klass in itertools.chain(plugin_extractors.items(), plugin_postprocessors.items())])

-        if self.params.get('compat_opts'):
-            write_debug('Compatibility options: %s' % ', '.join(self.params.get('compat_opts')))
+        if self.params['compat_opts']:
+            write_debug('Compatibility options: %s' % ', '.join(self.params['compat_opts']))

 
         if source == 'source':
             try:
 
         if source == 'source':
             try:

-                sp = Popen(
+                stdout, _, _ = Popen.run(

                     ['git', 'rev-parse', '--short', 'HEAD'],
                     ['git', 'rev-parse', '--short', 'HEAD'],

-                    stdout=subprocess.PIPE, stderr=subprocess.PIPE,
-                    cwd=os.path.dirname(os.path.abspath(__file__)))
-                out, err = sp.communicate_or_kill()
-                out = out.decode().strip()
-                if re.match('[0-9a-f]+', out):
-                    write_debug('Git HEAD: %s' % out)
+                    text=True, cwd=os.path.dirname(os.path.abspath(__file__)),
+                    stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+                if re.fullmatch('[0-9a-f]+', stdout.strip()):
+                    write_debug(f'Git HEAD: {stdout.strip()}')

             except Exception:
                 with contextlib.suppress(Exception):
                     sys.exc_clear()
 
             except Exception:
                 with contextlib.suppress(Exception):
                     sys.exc_clear()
 

-        def python_implementation():
-            impl_name = platform.python_implementation()
-            if impl_name == 'PyPy' and hasattr(sys, 'pypy_version_info'):
-                return impl_name + ' version %d.%d.%d' % sys.pypy_version_info[:3]
-            return impl_name
-
-        write_debug('Python version %s (%s %s) - %s' % (
-            platform.python_version(),
-            python_implementation(),
-            platform.architecture()[0],
-            platform_name()))
+        write_debug(system_identifier())

 
         exe_versions, ffmpeg_features = FFmpegPostProcessor.get_versions_and_features(self)
         ffmpeg_features = {key for key, val in ffmpeg_features.items() if val}
 
         exe_versions, ffmpeg_features = FFmpegPostProcessor.get_versions_and_features(self)
         ffmpeg_features = {key for key, val in ffmpeg_features.items() if val}


@@ -3667,10 +3724,11 @@ def python_implementation():
         ) or 'none'
         write_debug('exe versions: %s' % exe_str)
 
         ) or 'none'
         write_debug('exe versions: %s' % exe_str)
 

+        from .compat.compat_utils import get_package_info

         from .dependencies import available_dependencies
 
         write_debug('Optional libraries: %s' % (', '.join(sorted({
         from .dependencies import available_dependencies
 
         write_debug('Optional libraries: %s' % (', '.join(sorted({

-            module.__name__.split('.')[0] for module in available_dependencies.values()
+            join_nonempty(*get_package_info(m)) for m in available_dependencies.values()

         })) or 'none'))
 
         self._setup_opener()
         })) or 'none'))
 
         self._setup_opener()


@@ -3682,10 +3740,10 @@ def python_implementation():
 
         # Not implemented
         if False and self.params.get('call_home'):
 
         # Not implemented
         if False and self.params.get('call_home'):

-            ipaddr = self.urlopen('https://yt-dl.org/ip').read().decode('utf-8')
+            ipaddr = self.urlopen('https://yt-dl.org/ip').read().decode()

             write_debug('Public IP address: %s' % ipaddr)
             latest_version = self.urlopen(
             write_debug('Public IP address: %s' % ipaddr)
             latest_version = self.urlopen(

-                'https://yt-dl.org/latest/version').read().decode('utf-8')
+                'https://yt-dl.org/latest/version').read().decode()

             if version_tuple(latest_version) > version_tuple(__version__):
                 self.report_warning(
                     'You are using an outdated version (newest version: %s)! '
             if version_tuple(latest_version) > version_tuple(__version__):
                 self.report_warning(
                     'You are using an outdated version (newest version: %s)! '


@@ -3711,7 +3769,7 @@ def _setup_opener(self):
             else:
                 proxies = {'http': opts_proxy, 'https': opts_proxy}
         else:
             else:
                 proxies = {'http': opts_proxy, 'https': opts_proxy}
         else:

-            proxies = compat_urllib_request.getproxies()
+            proxies = urllib.request.getproxies()

             # Set HTTPS proxy to HTTP one if given (https://github.com/ytdl-org/youtube-dl/issues/805)
             if 'http' in proxies and 'https' not in proxies:
                 proxies['https'] = proxies['http']
             # Set HTTPS proxy to HTTP one if given (https://github.com/ytdl-org/youtube-dl/issues/805)
             if 'http' in proxies and 'https' not in proxies:
                 proxies['https'] = proxies['http']


@@ -3727,13 +3785,13 @@ def _setup_opener(self):
         # default FileHandler and allows us to disable the file protocol, which
         # can be used for malicious purposes (see
         # https://github.com/ytdl-org/youtube-dl/issues/8227)
         # default FileHandler and allows us to disable the file protocol, which
         # can be used for malicious purposes (see
         # https://github.com/ytdl-org/youtube-dl/issues/8227)

-        file_handler = compat_urllib_request.FileHandler()
+        file_handler = urllib.request.FileHandler()

 
         def file_open(*args, **kwargs):
 
         def file_open(*args, **kwargs):

-            raise compat_urllib_error.URLError('file:// scheme is explicitly disabled in yt-dlp for security reasons')
+            raise urllib.error.URLError('file:// scheme is explicitly disabled in yt-dlp for security reasons')

         file_handler.file_open = file_open
 
         file_handler.file_open = file_open
 

-        opener = compat_urllib_request.build_opener(
+        opener = urllib.request.build_opener(

             proxy_handler, https_handler, cookie_processor, ydlh, redirect_handler, data_handler, file_handler)
 
         # Delete the default user-agent header, which would otherwise apply in
             proxy_handler, https_handler, cookie_processor, ydlh, redirect_handler, data_handler, file_handler)
 
         # Delete the default user-agent header, which would otherwise apply in