yt_dlp/extractor/reddit.py

   1 import random
   2 from urllib.parse import urlparse
   3
   4 from .common import InfoExtractor
   5 from ..utils import (
   6     ExtractorError,
   7     int_or_none,
   8     float_or_none,
   9     try_get,
  10     unescapeHTML,
  11     url_or_none,
  12     traverse_obj
  13 )
  14
  15
  16 class RedditIE(InfoExtractor):
  17     _VALID_URL = r'https?://(?P<subdomain>[^/]+\.)?reddit(?:media)?\.com/r/(?P<slug>[^/]+/comments/(?P<id>[^/?#&]+))'
  18     _TESTS = [{
  19         'url': 'https://www.reddit.com/r/videos/comments/6rrwyj/that_small_heart_attack/',
  20         'info_dict': {
  21             'id': 'zv89llsvexdz',
  22             'ext': 'mp4',
  23             'display_id': '6rrwyj',
  24             'title': 'That small heart attack.',
  25             'thumbnail': r're:^https?://.*\.(?:jpg|png)',
  26             'thumbnails': 'count:4',
  27             'timestamp': 1501941939,
  28             'upload_date': '20170805',
  29             'uploader': 'Antw87',
  30             'duration': 12,
  31             'like_count': int,
  32             'dislike_count': int,
  33             'comment_count': int,
  34             'age_limit': 0,
  35         },
  36         'params': {
  37             'skip_download': True,
  38         },
  39     }, {
  40         'url': 'https://www.reddit.com/r/videos/comments/6rrwyj',
  41         'only_matching': True,
  42     }, {
  43         # imgur
  44         'url': 'https://www.reddit.com/r/MadeMeSmile/comments/6t7wi5/wait_for_it/',
  45         'only_matching': True,
  46     }, {
  47         # imgur @ old reddit
  48         'url': 'https://old.reddit.com/r/MadeMeSmile/comments/6t7wi5/wait_for_it/',
  49         'only_matching': True,
  50     }, {
  51         # streamable
  52         'url': 'https://www.reddit.com/r/videos/comments/6t7sg9/comedians_hilarious_joke_about_the_guam_flag/',
  53         'only_matching': True,
  54     }, {
  55         # youtube
  56         'url': 'https://www.reddit.com/r/videos/comments/6t75wq/southern_man_tries_to_speak_without_an_accent/',
  57         'only_matching': True,
  58     }, {
  59         # reddit video @ nm reddit
  60         'url': 'https://nm.reddit.com/r/Cricket/comments/8idvby/lousy_cameraman_finds_himself_in_cairns_line_of/',
  61         'only_matching': True,
  62     }, {
  63         'url': 'https://www.redditmedia.com/r/serbia/comments/pu9wbx/ako_vu%C4%8Di%C4%87_izgubi_izbore_ja_%C4%87u_da_crknem/',
  64         'only_matching': True,
  65     }]
  66
  67     @staticmethod
  68     def _gen_session_id():
  69         id_length = 16
  70         rand_max = 1 << (id_length * 4)
  71         return '%0.*x' % (id_length, random.randrange(rand_max))
  72
  73     def _real_extract(self, url):
  74         subdomain, slug, video_id = self._match_valid_url(url).group('subdomain', 'slug', 'id')
  75
  76         self._set_cookie('.reddit.com', 'reddit_session', self._gen_session_id())
  77         self._set_cookie('.reddit.com', '_options', '%7B%22pref_quarantine_optin%22%3A%20true%7D')
  78         data = self._download_json(f'https://{subdomain}reddit.com/r/{slug}/.json', video_id, fatal=False)
  79         if not data:
  80             # Fall back to old.reddit.com in case the requested subdomain fails
  81             data = self._download_json(f'https://old.reddit.com/r/{slug}/.json', video_id)
  82         data = data[0]['data']['children'][0]['data']
  83         video_url = data['url']
  84
  85         # Avoid recursing into the same reddit URL
  86         if 'reddit.com/' in video_url and '/%s/' % video_id in video_url:
  87             raise ExtractorError('No media found', expected=True)
  88
  89         over_18 = data.get('over_18')
  90         if over_18 is True:
  91             age_limit = 18
  92         elif over_18 is False:
  93             age_limit = 0
  94         else:
  95             age_limit = None
  96
  97         thumbnails = []
  98
  99         def add_thumbnail(src):
 100             if not isinstance(src, dict):
 101                 return
 102             thumbnail_url = url_or_none(src.get('url'))
 103             if not thumbnail_url:
 104                 return
 105             thumbnails.append({
 106                 'url': unescapeHTML(thumbnail_url),
 107                 'width': int_or_none(src.get('width')),
 108                 'height': int_or_none(src.get('height')),
 109             })
 110
 111         for image in try_get(data, lambda x: x['preview']['images']) or []:
 112             if not isinstance(image, dict):
 113                 continue
 114             add_thumbnail(image.get('source'))
 115             resolutions = image.get('resolutions')
 116             if isinstance(resolutions, list):
 117                 for resolution in resolutions:
 118                     add_thumbnail(resolution)
 119
 120         info = {
 121             'title': data.get('title'),
 122             'thumbnails': thumbnails,
 123             'timestamp': float_or_none(data.get('created_utc')),
 124             'uploader': data.get('author'),
 125             'like_count': int_or_none(data.get('ups')),
 126             'dislike_count': int_or_none(data.get('downs')),
 127             'comment_count': int_or_none(data.get('num_comments')),
 128             'age_limit': age_limit,
 129         }
 130
 131         # Check if media is hosted on reddit:
 132         reddit_video = traverse_obj(data, (('media', 'secure_media'), 'reddit_video'), get_all=False)
 133         if reddit_video:
 134             playlist_urls = [
 135                 try_get(reddit_video, lambda x: unescapeHTML(x[y]))
 136                 for y in ('dash_url', 'hls_url')
 137             ]
 138
 139             # Update video_id
 140             display_id = video_id
 141             video_id = self._search_regex(
 142                 r'https?://v\.redd\.it/(?P<id>[^/?#&]+)', reddit_video['fallback_url'],
 143                 'video_id', default=display_id)
 144
 145             dash_playlist_url = playlist_urls[0] or f'https://v.redd.it/{video_id}/DASHPlaylist.mpd'
 146             hls_playlist_url = playlist_urls[1] or f'https://v.redd.it/{video_id}/HLSPlaylist.m3u8'
 147
 148             formats = self._extract_m3u8_formats(
 149                 hls_playlist_url, display_id, 'mp4',
 150                 entry_protocol='m3u8_native', m3u8_id='hls', fatal=False)
 151             formats.extend(self._extract_mpd_formats(
 152                 dash_playlist_url, display_id, mpd_id='dash', fatal=False))
 153             self._sort_formats(formats)
 154
 155             return {
 156                 **info,
 157                 'id': video_id,
 158                 'display_id': display_id,
 159                 'formats': formats,
 160                 'duration': int_or_none(reddit_video.get('duration')),
 161             }
 162
 163         parsed_url = urlparse(video_url)
 164         if parsed_url.netloc == 'v.redd.it':
 165             self.raise_no_formats('This video is processing', expected=True, video_id=video_id)
 166             return {
 167                 **info,
 168                 'id': parsed_url.path.split('/')[1],
 169                 'display_id': video_id,
 170             }
 171
 172         # Not hosted on reddit, must continue extraction
 173         return {
 174             **info,
 175             'display_id': video_id,
 176             '_type': 'url_transparent',
 177             'url': video_url,
 178         }