_ Git - youtube-dl/blob - youtube_dl/extractor/youtube.py

   1 # coding: utf-8
   2
   3 from __future__ import unicode_literals
   4
   5
   6 import itertools
   7 import json
   8 import os.path
   9 import random
  10 import re
  11 import time
  12 import traceback
  13
  14 from .common import InfoExtractor, SearchInfoExtractor
  15 from ..jsinterp import JSInterpreter
  16 from ..swfinterp import SWFInterpreter
  17 from ..compat import (
  18     compat_chr,
  19     compat_HTTPError,
  20     compat_kwargs,
  21     compat_parse_qs,
  22     compat_urllib_parse_unquote,
  23     compat_urllib_parse_unquote_plus,
  24     compat_urllib_parse_urlencode,
  25     compat_urllib_parse_urlparse,
  26     compat_urlparse,
  27     compat_str,
  28 )
  29 from ..utils import (
  30     clean_html,
  31     dict_get,
  32     error_to_compat_str,
  33     ExtractorError,
  34     float_or_none,
  35     get_element_by_attribute,
  36     get_element_by_id,
  37     int_or_none,
  38     mimetype2ext,
  39     orderedSet,
  40     parse_codecs,
  41     parse_duration,
  42     qualities,
  43     remove_quotes,
  44     remove_start,
  45     smuggle_url,
  46     str_or_none,
  47     str_to_int,
  48     try_get,
  49     unescapeHTML,
  50     unified_strdate,
  51     unsmuggle_url,
  52     uppercase_escape,
  53     url_or_none,
  54     urlencode_postdata,
  55 )
  56
  57
  58 class YoutubeBaseInfoExtractor(InfoExtractor):
  59     """Provide base functions for Youtube extractors"""
  60     _LOGIN_URL = 'https://accounts.google.com/ServiceLogin'
  61     _TWOFACTOR_URL = 'https://accounts.google.com/signin/challenge'
  62
  63     _LOOKUP_URL = 'https://accounts.google.com/_/signin/sl/lookup'
  64     _CHALLENGE_URL = 'https://accounts.google.com/_/signin/sl/challenge'
  65     _TFA_URL = 'https://accounts.google.com/_/signin/challenge?hl=en&TL={0}'
  66
  67     _NETRC_MACHINE = 'youtube'
  68     # If True it will raise an error if no login info is provided
  69     _LOGIN_REQUIRED = False
  70
  71     _PLAYLIST_ID_RE = r'(?:PL|LL|EC|UU|FL|RD|UL|TL|OLAK5uy_)[0-9A-Za-z-_]{10,}'
  72
  73     def _set_language(self):
  74         self._set_cookie(
  75             '.youtube.com', 'PREF', 'f1=50000000&hl=en',
  76             # YouTube sets the expire time to about two months
  77             expire_time=time.time() + 2 * 30 * 24 * 3600)
  78
  79     def _ids_to_results(self, ids):
  80         return [
  81             self.url_result(vid_id, 'Youtube', video_id=vid_id)
  82             for vid_id in ids]
  83
  84     def _login(self):
  85         """
  86         Attempt to log in to YouTube.
  87         True is returned if successful or skipped.
  88         False is returned if login failed.
  89
  90         If _LOGIN_REQUIRED is set and no authentication was provided, an error is raised.
  91         """
  92         username, password = self._get_login_info()
  93         # No authentication to be performed
  94         if username is None:
  95             if self._LOGIN_REQUIRED and self._downloader.params.get('cookiefile') is None:
  96                 raise ExtractorError('No login info available, needed for using %s.' % self.IE_NAME, expected=True)
  97             return True
  98
  99         login_page = self._download_webpage(
 100             self._LOGIN_URL, None,
 101             note='Downloading login page',
 102             errnote='unable to fetch login page', fatal=False)
 103         if login_page is False:
 104             return
 105
 106         login_form = self._hidden_inputs(login_page)
 107
 108         def req(url, f_req, note, errnote):
 109             data = login_form.copy()
 110             data.update({
 111                 'pstMsg': 1,
 112                 'checkConnection': 'youtube',
 113                 'checkedDomains': 'youtube',
 114                 'hl': 'en',
 115                 'deviceinfo': '[null,null,null,[],null,"US",null,null,[],"GlifWebSignIn",null,[null,null,[]]]',
 116                 'f.req': json.dumps(f_req),
 117                 'flowName': 'GlifWebSignIn',
 118                 'flowEntry': 'ServiceLogin',
 119             })
 120             return self._download_json(
 121                 url, None, note=note, errnote=errnote,
 122                 transform_source=lambda s: re.sub(r'^[^[]*', '', s),
 123                 fatal=False,
 124                 data=urlencode_postdata(data), headers={
 125                     'Content-Type': 'application/x-www-form-urlencoded;charset=utf-8',
 126                     'Google-Accounts-XSRF': 1,
 127                 })
 128
 129         def warn(message):
 130             self._downloader.report_warning(message)
 131
 132         lookup_req = [
 133             username,
 134             None, [], None, 'US', None, None, 2, False, True,
 135             [
 136                 None, None,
 137                 [2, 1, None, 1,
 138                  'https://accounts.google.com/ServiceLogin?passive=true&continue=https%3A%2F%2Fwww.youtube.com%2Fsignin%3Fnext%3D%252F%26action_handle_signin%3Dtrue%26hl%3Den%26app%3Ddesktop%26feature%3Dsign_in_button&hl=en&service=youtube&uilel=3&requestPath=%2FServiceLogin&Page=PasswordSeparationSignIn',
 139                  None, [], 4],
 140                 1, [None, None, []], None, None, None, True
 141             ],
 142             username,
 143         ]
 144
 145         lookup_results = req(
 146             self._LOOKUP_URL, lookup_req,
 147             'Looking up account info', 'Unable to look up account info')
 148
 149         if lookup_results is False:
 150             return False
 151
 152         user_hash = try_get(lookup_results, lambda x: x[0][2], compat_str)
 153         if not user_hash:
 154             warn('Unable to extract user hash')
 155             return False
 156
 157         challenge_req = [
 158             user_hash,
 159             None, 1, None, [1, None, None, None, [password, None, True]],
 160             [
 161                 None, None, [2, 1, None, 1, 'https://accounts.google.com/ServiceLogin?passive=true&continue=https%3A%2F%2Fwww.youtube.com%2Fsignin%3Fnext%3D%252F%26action_handle_signin%3Dtrue%26hl%3Den%26app%3Ddesktop%26feature%3Dsign_in_button&hl=en&service=youtube&uilel=3&requestPath=%2FServiceLogin&Page=PasswordSeparationSignIn', None, [], 4],
 162                 1, [None, None, []], None, None, None, True
 163             ]]
 164
 165         challenge_results = req(
 166             self._CHALLENGE_URL, challenge_req,
 167             'Logging in', 'Unable to log in')
 168
 169         if challenge_results is False:
 170             return
 171
 172         login_res = try_get(challenge_results, lambda x: x[0][5], list)
 173         if login_res:
 174             login_msg = try_get(login_res, lambda x: x[5], compat_str)
 175             warn(
 176                 'Unable to login: %s' % 'Invalid password'
 177                 if login_msg == 'INCORRECT_ANSWER_ENTERED' else login_msg)
 178             return False
 179
 180         res = try_get(challenge_results, lambda x: x[0][-1], list)
 181         if not res:
 182             warn('Unable to extract result entry')
 183             return False
 184
 185         login_challenge = try_get(res, lambda x: x[0][0], list)
 186         if login_challenge:
 187             challenge_str = try_get(login_challenge, lambda x: x[2], compat_str)
 188             if challenge_str == 'TWO_STEP_VERIFICATION':
 189                 # SEND_SUCCESS - TFA code has been successfully sent to phone
 190                 # QUOTA_EXCEEDED - reached the limit of TFA codes
 191                 status = try_get(login_challenge, lambda x: x[5], compat_str)
 192                 if status == 'QUOTA_EXCEEDED':
 193                     warn('Exceeded the limit of TFA codes, try later')
 194                     return False
 195
 196                 tl = try_get(challenge_results, lambda x: x[1][2], compat_str)
 197                 if not tl:
 198                     warn('Unable to extract TL')
 199                     return False
 200
 201                 tfa_code = self._get_tfa_info('2-step verification code')
 202
 203                 if not tfa_code:
 204                     warn(
 205                         'Two-factor authentication required. Provide it either interactively or with --twofactor <code>'
 206                         '(Note that only TOTP (Google Authenticator App) codes work at this time.)')
 207                     return False
 208
 209                 tfa_code = remove_start(tfa_code, 'G-')
 210
 211                 tfa_req = [
 212                     user_hash, None, 2, None,
 213                     [
 214                         9, None, None, None, None, None, None, None,
 215                         [None, tfa_code, True, 2]
 216                     ]]
 217
 218                 tfa_results = req(
 219                     self._TFA_URL.format(tl), tfa_req,
 220                     'Submitting TFA code', 'Unable to submit TFA code')
 221
 222                 if tfa_results is False:
 223                     return False
 224
 225                 tfa_res = try_get(tfa_results, lambda x: x[0][5], list)
 226                 if tfa_res:
 227                     tfa_msg = try_get(tfa_res, lambda x: x[5], compat_str)
 228                     warn(
 229                         'Unable to finish TFA: %s' % 'Invalid TFA code'
 230                         if tfa_msg == 'INCORRECT_ANSWER_ENTERED' else tfa_msg)
 231                     return False
 232
 233                 check_cookie_url = try_get(
 234                     tfa_results, lambda x: x[0][-1][2], compat_str)
 235             else:
 236                 CHALLENGES = {
 237                     'LOGIN_CHALLENGE': "This device isn't recognized. For your security, Google wants to make sure it's really you.",
 238                     'USERNAME_RECOVERY': 'Please provide additional information to aid in the recovery process.',
 239                     'REAUTH': "There is something unusual about your activity. For your security, Google wants to make sure it's really you.",
 240                 }
 241                 challenge = CHALLENGES.get(
 242                     challenge_str,
 243                     '%s returned error %s.' % (self.IE_NAME, challenge_str))
 244                 warn('%s\nGo to https://accounts.google.com/, login and solve a challenge.' % challenge)
 245                 return False
 246         else:
 247             check_cookie_url = try_get(res, lambda x: x[2], compat_str)
 248
 249         if not check_cookie_url:
 250             warn('Unable to extract CheckCookie URL')
 251             return False
 252
 253         check_cookie_results = self._download_webpage(
 254             check_cookie_url, None, 'Checking cookie', fatal=False)
 255
 256         if check_cookie_results is False:
 257             return False
 258
 259         if 'https://myaccount.google.com/' not in check_cookie_results:
 260             warn('Unable to log in')
 261             return False
 262
 263         return True
 264
 265     def _download_webpage_handle(self, *args, **kwargs):
 266         query = kwargs.get('query', {}).copy()
 267         query['disable_polymer'] = 'true'
 268         kwargs['query'] = query
 269         return super(YoutubeBaseInfoExtractor, self)._download_webpage_handle(
 270             *args, **compat_kwargs(kwargs))
 271
 272     def _real_initialize(self):
 273         if self._downloader is None:
 274             return
 275         self._set_language()
 276         if not self._login():
 277             return
 278
 279
 280 class YoutubeEntryListBaseInfoExtractor(YoutubeBaseInfoExtractor):
 281     # Extract entries from page with "Load more" button
 282     def _entries(self, page, playlist_id):
 283         more_widget_html = content_html = page
 284         for page_num in itertools.count(1):
 285             for entry in self._process_page(content_html):
 286                 yield entry
 287
 288             mobj = re.search(r'data-uix-load-more-href="/?(?P<more>[^"]+)"', more_widget_html)
 289             if not mobj:
 290                 break
 291
 292             count = 0
 293             retries = 3
 294             while count <= retries:
 295                 try:
 296                     # Downloading page may result in intermittent 5xx HTTP error
 297                     # that is usually worked around with a retry
 298                     more = self._download_json(
 299                         'https://youtube.com/%s' % mobj.group('more'), playlist_id,
 300                         'Downloading page #%s%s'
 301                         % (page_num, ' (retry #%d)' % count if count else ''),
 302                         transform_source=uppercase_escape)
 303                     break
 304                 except ExtractorError as e:
 305                     if isinstance(e.cause, compat_HTTPError) and e.cause.code in (500, 503):
 306                         count += 1
 307                         if count <= retries:
 308                             continue
 309                     raise
 310
 311             content_html = more['content_html']
 312             if not content_html.strip():
 313                 # Some webpages show a "Load more" button but they don't
 314                 # have more videos
 315                 break
 316             more_widget_html = more['load_more_widget_html']
 317
 318
 319 class YoutubePlaylistBaseInfoExtractor(YoutubeEntryListBaseInfoExtractor):
 320     def _process_page(self, content):
 321         for video_id, video_title in self.extract_videos_from_page(content):
 322             yield self.url_result(video_id, 'Youtube', video_id, video_title)
 323
 324     def extract_videos_from_page(self, page):
 325         ids_in_page = []
 326         titles_in_page = []
 327         for mobj in re.finditer(self._VIDEO_RE, page):
 328             # The link with index 0 is not the first video of the playlist (not sure if still actual)
 329             if 'index' in mobj.groupdict() and mobj.group('id') == '0':
 330                 continue
 331             video_id = mobj.group('id')
 332             video_title = unescapeHTML(mobj.group('title'))
 333             if video_title:
 334                 video_title = video_title.strip()
 335             try:
 336                 idx = ids_in_page.index(video_id)
 337                 if video_title and not titles_in_page[idx]:
 338                     titles_in_page[idx] = video_title
 339             except ValueError:
 340                 ids_in_page.append(video_id)
 341                 titles_in_page.append(video_title)
 342         return zip(ids_in_page, titles_in_page)
 343
 344
 345 class YoutubePlaylistsBaseInfoExtractor(YoutubeEntryListBaseInfoExtractor):
 346     def _process_page(self, content):
 347         for playlist_id in orderedSet(re.findall(
 348                 r'<h3[^>]+class="[^"]*yt-lockup-title[^"]*"[^>]*><a[^>]+href="/?playlist\?list=([0-9A-Za-z-_]{10,})"',
 349                 content)):
 350             yield self.url_result(
 351                 'https://www.youtube.com/playlist?list=%s' % playlist_id, 'YoutubePlaylist')
 352
 353     def _real_extract(self, url):
 354         playlist_id = self._match_id(url)
 355         webpage = self._download_webpage(url, playlist_id)
 356         title = self._og_search_title(webpage, fatal=False)
 357         return self.playlist_result(self._entries(webpage, playlist_id), playlist_id, title)
 358
 359
 360 class YoutubeIE(YoutubeBaseInfoExtractor):
 361     IE_DESC = 'YouTube.com'
 362     _VALID_URL = r"""(?x)^
 363                      (
 364                          (?:https?://|//)                                    # http(s):// or protocol-independent URL
 365                          (?:(?:(?:(?:\w+\.)?[yY][oO][uU][tT][uU][bB][eE](?:-nocookie)?\.com/|
 366                             (?:www\.)?deturl\.com/www\.youtube\.com/|
 367                             (?:www\.)?pwnyoutube\.com/|
 368                             (?:www\.)?hooktube\.com/|
 369                             (?:www\.)?yourepeat\.com/|
 370                             tube\.majestyc\.net/|
 371                             (?:(?:www|dev)\.)?invidio\.us/|
 372                             (?:www\.)?invidiou\.sh/|
 373                             (?:www\.)?invidious\.snopyta\.org/|
 374                             (?:www\.)?invidious\.kabi\.tk/|
 375                             (?:www\.)?vid\.wxzm\.sx/|
 376                             youtube\.googleapis\.com/)                        # the various hostnames, with wildcard subdomains
 377                          (?:.*?\#/)?                                          # handle anchor (#/) redirect urls
 378                          (?:                                                  # the various things that can precede the ID:
 379                              (?:(?:v|embed|e)/(?!videoseries))                # v/ or embed/ or e/
 380                              |(?:                                             # or the v= param in all its forms
 381                                  (?:(?:watch|movie)(?:_popup)?(?:\.php)?/?)?  # preceding watch(_popup|.php) or nothing (like /?v=xxxx)
 382                                  (?:\?|\#!?)                                  # the params delimiter ? or # or #!
 383                                  (?:.*?[&;])??                                # any other preceding param (like /?s=tuff&v=xxxx or ?s=tuff&amp;v=V36LpHqtcDY)
 384                                  v=
 385                              )
 386                          ))
 387                          |(?:
 388                             youtu\.be|                                        # just youtu.be/xxxx
 389                             vid\.plus|                                        # or vid.plus/xxxx
 390                             zwearz\.com/watch|                                # or zwearz.com/watch/xxxx
 391                          )/
 392                          |(?:www\.)?cleanvideosearch\.com/media/action/yt/watch\?videoId=
 393                          )
 394                      )?                                                       # all until now is optional -> you can pass the naked ID
 395                      ([0-9A-Za-z_-]{11})                                      # here is it! the YouTube video ID
 396                      (?!.*?\blist=
 397                         (?:
 398                             %(playlist_id)s|                                  # combined list/video URLs are handled by the playlist IE
 399                             WL                                                # WL are handled by the watch later IE
 400                         )
 401                      )
 402                      (?(1).+)?                                                # if we found the ID, everything can follow
 403                      $""" % {'playlist_id': YoutubeBaseInfoExtractor._PLAYLIST_ID_RE}
 404     _NEXT_URL_RE = r'[\?&]next_url=([^&]+)'
 405     _formats = {
 406         '5': {'ext': 'flv', 'width': 400, 'height': 240, 'acodec': 'mp3', 'abr': 64, 'vcodec': 'h263'},
 407         '6': {'ext': 'flv', 'width': 450, 'height': 270, 'acodec': 'mp3', 'abr': 64, 'vcodec': 'h263'},
 408         '13': {'ext': '3gp', 'acodec': 'aac', 'vcodec': 'mp4v'},
 409         '17': {'ext': '3gp', 'width': 176, 'height': 144, 'acodec': 'aac', 'abr': 24, 'vcodec': 'mp4v'},
 410         '18': {'ext': 'mp4', 'width': 640, 'height': 360, 'acodec': 'aac', 'abr': 96, 'vcodec': 'h264'},
 411         '22': {'ext': 'mp4', 'width': 1280, 'height': 720, 'acodec': 'aac', 'abr': 192, 'vcodec': 'h264'},
 412         '34': {'ext': 'flv', 'width': 640, 'height': 360, 'acodec': 'aac', 'abr': 128, 'vcodec': 'h264'},
 413         '35': {'ext': 'flv', 'width': 854, 'height': 480, 'acodec': 'aac', 'abr': 128, 'vcodec': 'h264'},
 414         # itag 36 videos are either 320x180 (BaW_jenozKc) or 320x240 (__2ABJjxzNo), abr varies as well
 415         '36': {'ext': '3gp', 'width': 320, 'acodec': 'aac', 'vcodec': 'mp4v'},
 416         '37': {'ext': 'mp4', 'width': 1920, 'height': 1080, 'acodec': 'aac', 'abr': 192, 'vcodec': 'h264'},
 417         '38': {'ext': 'mp4', 'width': 4096, 'height': 3072, 'acodec': 'aac', 'abr': 192, 'vcodec': 'h264'},
 418         '43': {'ext': 'webm', 'width': 640, 'height': 360, 'acodec': 'vorbis', 'abr': 128, 'vcodec': 'vp8'},
 419         '44': {'ext': 'webm', 'width': 854, 'height': 480, 'acodec': 'vorbis', 'abr': 128, 'vcodec': 'vp8'},
 420         '45': {'ext': 'webm', 'width': 1280, 'height': 720, 'acodec': 'vorbis', 'abr': 192, 'vcodec': 'vp8'},
 421         '46': {'ext': 'webm', 'width': 1920, 'height': 1080, 'acodec': 'vorbis', 'abr': 192, 'vcodec': 'vp8'},
 422         '59': {'ext': 'mp4', 'width': 854, 'height': 480, 'acodec': 'aac', 'abr': 128, 'vcodec': 'h264'},
 423         '78': {'ext': 'mp4', 'width': 854, 'height': 480, 'acodec': 'aac', 'abr': 128, 'vcodec': 'h264'},
 424
 425
 426         # 3D videos
 427         '82': {'ext': 'mp4', 'height': 360, 'format_note': '3D', 'acodec': 'aac', 'abr': 128, 'vcodec': 'h264', 'preference': -20},
 428         '83': {'ext': 'mp4', 'height': 480, 'format_note': '3D', 'acodec': 'aac', 'abr': 128, 'vcodec': 'h264', 'preference': -20},
 429         '84': {'ext': 'mp4', 'height': 720, 'format_note': '3D', 'acodec': 'aac', 'abr': 192, 'vcodec': 'h264', 'preference': -20},
 430         '85': {'ext': 'mp4', 'height': 1080, 'format_note': '3D', 'acodec': 'aac', 'abr': 192, 'vcodec': 'h264', 'preference': -20},
 431         '100': {'ext': 'webm', 'height': 360, 'format_note': '3D', 'acodec': 'vorbis', 'abr': 128, 'vcodec': 'vp8', 'preference': -20},
 432         '101': {'ext': 'webm', 'height': 480, 'format_note': '3D', 'acodec': 'vorbis', 'abr': 192, 'vcodec': 'vp8', 'preference': -20},
 433         '102': {'ext': 'webm', 'height': 720, 'format_note': '3D', 'acodec': 'vorbis', 'abr': 192, 'vcodec': 'vp8', 'preference': -20},
 434
 435         # Apple HTTP Live Streaming
 436         '91': {'ext': 'mp4', 'height': 144, 'format_note': 'HLS', 'acodec': 'aac', 'abr': 48, 'vcodec': 'h264', 'preference': -10},
 437         '92': {'ext': 'mp4', 'height': 240, 'format_note': 'HLS', 'acodec': 'aac', 'abr': 48, 'vcodec': 'h264', 'preference': -10},
 438         '93': {'ext': 'mp4', 'height': 360, 'format_note': 'HLS', 'acodec': 'aac', 'abr': 128, 'vcodec': 'h264', 'preference': -10},
 439         '94': {'ext': 'mp4', 'height': 480, 'format_note': 'HLS', 'acodec': 'aac', 'abr': 128, 'vcodec': 'h264', 'preference': -10},
 440         '95': {'ext': 'mp4', 'height': 720, 'format_note': 'HLS', 'acodec': 'aac', 'abr': 256, 'vcodec': 'h264', 'preference': -10},
 441         '96': {'ext': 'mp4', 'height': 1080, 'format_note': 'HLS', 'acodec': 'aac', 'abr': 256, 'vcodec': 'h264', 'preference': -10},
 442         '132': {'ext': 'mp4', 'height': 240, 'format_note': 'HLS', 'acodec': 'aac', 'abr': 48, 'vcodec': 'h264', 'preference': -10},
 443         '151': {'ext': 'mp4', 'height': 72, 'format_note': 'HLS', 'acodec': 'aac', 'abr': 24, 'vcodec': 'h264', 'preference': -10},
 444
 445         # DASH mp4 video
 446         '133': {'ext': 'mp4', 'height': 240, 'format_note': 'DASH video', 'vcodec': 'h264'},
 447         '134': {'ext': 'mp4', 'height': 360, 'format_note': 'DASH video', 'vcodec': 'h264'},
 448         '135': {'ext': 'mp4', 'height': 480, 'format_note': 'DASH video', 'vcodec': 'h264'},
 449         '136': {'ext': 'mp4', 'height': 720, 'format_note': 'DASH video', 'vcodec': 'h264'},
 450         '137': {'ext': 'mp4', 'height': 1080, 'format_note': 'DASH video', 'vcodec': 'h264'},
 451         '138': {'ext': 'mp4', 'format_note': 'DASH video', 'vcodec': 'h264'},  # Height can vary (https://github.com/ytdl-org/youtube-dl/issues/4559)
 452         '160': {'ext': 'mp4', 'height': 144, 'format_note': 'DASH video', 'vcodec': 'h264'},
 453         '212': {'ext': 'mp4', 'height': 480, 'format_note': 'DASH video', 'vcodec': 'h264'},
 454         '264': {'ext': 'mp4', 'height': 1440, 'format_note': 'DASH video', 'vcodec': 'h264'},
 455         '298': {'ext': 'mp4', 'height': 720, 'format_note': 'DASH video', 'vcodec': 'h264', 'fps': 60},
 456         '299': {'ext': 'mp4', 'height': 1080, 'format_note': 'DASH video', 'vcodec': 'h264', 'fps': 60},
 457         '266': {'ext': 'mp4', 'height': 2160, 'format_note': 'DASH video', 'vcodec': 'h264'},
 458
 459         # Dash mp4 audio
 460         '139': {'ext': 'm4a', 'format_note': 'DASH audio', 'acodec': 'aac', 'abr': 48, 'container': 'm4a_dash'},
 461         '140': {'ext': 'm4a', 'format_note': 'DASH audio', 'acodec': 'aac', 'abr': 128, 'container': 'm4a_dash'},
 462         '141': {'ext': 'm4a', 'format_note': 'DASH audio', 'acodec': 'aac', 'abr': 256, 'container': 'm4a_dash'},
 463         '256': {'ext': 'm4a', 'format_note': 'DASH audio', 'acodec': 'aac', 'container': 'm4a_dash'},
 464         '258': {'ext': 'm4a', 'format_note': 'DASH audio', 'acodec': 'aac', 'container': 'm4a_dash'},
 465         '325': {'ext': 'm4a', 'format_note': 'DASH audio', 'acodec': 'dtse', 'container': 'm4a_dash'},
 466         '328': {'ext': 'm4a', 'format_note': 'DASH audio', 'acodec': 'ec-3', 'container': 'm4a_dash'},
 467
 468         # Dash webm
 469         '167': {'ext': 'webm', 'height': 360, 'width': 640, 'format_note': 'DASH video', 'container': 'webm', 'vcodec': 'vp8'},
 470         '168': {'ext': 'webm', 'height': 480, 'width': 854, 'format_note': 'DASH video', 'container': 'webm', 'vcodec': 'vp8'},
 471         '169': {'ext': 'webm', 'height': 720, 'width': 1280, 'format_note': 'DASH video', 'container': 'webm', 'vcodec': 'vp8'},
 472         '170': {'ext': 'webm', 'height': 1080, 'width': 1920, 'format_note': 'DASH video', 'container': 'webm', 'vcodec': 'vp8'},
 473         '218': {'ext': 'webm', 'height': 480, 'width': 854, 'format_note': 'DASH video', 'container': 'webm', 'vcodec': 'vp8'},
 474         '219': {'ext': 'webm', 'height': 480, 'width': 854, 'format_note': 'DASH video', 'container': 'webm', 'vcodec': 'vp8'},
 475         '278': {'ext': 'webm', 'height': 144, 'format_note': 'DASH video', 'container': 'webm', 'vcodec': 'vp9'},
 476         '242': {'ext': 'webm', 'height': 240, 'format_note': 'DASH video', 'vcodec': 'vp9'},
 477         '243': {'ext': 'webm', 'height': 360, 'format_note': 'DASH video', 'vcodec': 'vp9'},
 478         '244': {'ext': 'webm', 'height': 480, 'format_note': 'DASH video', 'vcodec': 'vp9'},
 479         '245': {'ext': 'webm', 'height': 480, 'format_note': 'DASH video', 'vcodec': 'vp9'},
 480         '246': {'ext': 'webm', 'height': 480, 'format_note': 'DASH video', 'vcodec': 'vp9'},
 481         '247': {'ext': 'webm', 'height': 720, 'format_note': 'DASH video', 'vcodec': 'vp9'},
 482         '248': {'ext': 'webm', 'height': 1080, 'format_note': 'DASH video', 'vcodec': 'vp9'},
 483         '271': {'ext': 'webm', 'height': 1440, 'format_note': 'DASH video', 'vcodec': 'vp9'},
 484         # itag 272 videos are either 3840x2160 (e.g. RtoitU2A-3E) or 7680x4320 (sLprVF6d7Ug)
 485         '272': {'ext': 'webm', 'height': 2160, 'format_note': 'DASH video', 'vcodec': 'vp9'},
 486         '302': {'ext': 'webm', 'height': 720, 'format_note': 'DASH video', 'vcodec': 'vp9', 'fps': 60},
 487         '303': {'ext': 'webm', 'height': 1080, 'format_note': 'DASH video', 'vcodec': 'vp9', 'fps': 60},
 488         '308': {'ext': 'webm', 'height': 1440, 'format_note': 'DASH video', 'vcodec': 'vp9', 'fps': 60},
 489         '313': {'ext': 'webm', 'height': 2160, 'format_note': 'DASH video', 'vcodec': 'vp9'},
 490         '315': {'ext': 'webm', 'height': 2160, 'format_note': 'DASH video', 'vcodec': 'vp9', 'fps': 60},
 491
 492         # Dash webm audio
 493         '171': {'ext': 'webm', 'acodec': 'vorbis', 'format_note': 'DASH audio', 'abr': 128},
 494         '172': {'ext': 'webm', 'acodec': 'vorbis', 'format_note': 'DASH audio', 'abr': 256},
 495
 496         # Dash webm audio with opus inside
 497         '249': {'ext': 'webm', 'format_note': 'DASH audio', 'acodec': 'opus', 'abr': 50},
 498         '250': {'ext': 'webm', 'format_note': 'DASH audio', 'acodec': 'opus', 'abr': 70},
 499         '251': {'ext': 'webm', 'format_note': 'DASH audio', 'acodec': 'opus', 'abr': 160},
 500
 501         # RTMP (unnamed)
 502         '_rtmp': {'protocol': 'rtmp'},
 503     }
 504     _SUBTITLE_FORMATS = ('srv1', 'srv2', 'srv3', 'ttml', 'vtt')
 505
 506     _GEO_BYPASS = False
 507
 508     IE_NAME = 'youtube'
 509     _TESTS = [
 510         {
 511             'url': 'https://www.youtube.com/watch?v=BaW_jenozKc&t=1s&end=9',
 512             'info_dict': {
 513                 'id': 'BaW_jenozKc',
 514                 'ext': 'mp4',
 515                 'title': 'youtube-dl test video "\'/\\ä↭𝕐',
 516                 'uploader': 'Philipp Hagemeister',
 517                 'uploader_id': 'phihag',
 518                 'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/phihag',
 519                 'channel_id': 'UCLqxVugv74EIW3VWh2NOa3Q',
 520                 'channel_url': r're:https?://(?:www\.)?youtube\.com/channel/UCLqxVugv74EIW3VWh2NOa3Q',
 521                 'upload_date': '20121002',
 522                 'description': 'test chars:  "\'/\\ä↭𝕐\ntest URL: https://github.com/rg3/youtube-dl/issues/1892\n\nThis is a test video for youtube-dl.\n\nFor more information, contact phihag@phihag.de .',
 523                 'categories': ['Science & Technology'],
 524                 'tags': ['youtube-dl'],
 525                 'duration': 10,
 526                 'view_count': int,
 527                 'like_count': int,
 528                 'dislike_count': int,
 529                 'start_time': 1,
 530                 'end_time': 9,
 531             }
 532         },
 533         {
 534             'url': 'https://www.youtube.com/watch?v=UxxajLWwzqY',
 535             'note': 'Test generic use_cipher_signature video (#897)',
 536             'info_dict': {
 537                 'id': 'UxxajLWwzqY',
 538                 'ext': 'mp4',
 539                 'upload_date': '20120506',
 540                 'title': 'Icona Pop - I Love It (feat. Charli XCX) [OFFICIAL VIDEO]',
 541                 'alt_title': 'I Love It (feat. Charli XCX)',
 542                 'description': 'md5:f3ceb5ef83a08d95b9d146f973157cc8',
 543                 'tags': ['Icona Pop i love it', 'sweden', 'pop music', 'big beat records', 'big beat', 'charli',
 544                          'xcx', 'charli xcx', 'girls', 'hbo', 'i love it', "i don't care", 'icona', 'pop',
 545                          'iconic ep', 'iconic', 'love', 'it'],
 546                 'duration': 180,
 547                 'uploader': 'Icona Pop',
 548                 'uploader_id': 'IconaPop',
 549                 'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/IconaPop',
 550                 'creator': 'Icona Pop',
 551                 'track': 'I Love It (feat. Charli XCX)',
 552                 'artist': 'Icona Pop',
 553             }
 554         },
 555         {
 556             'url': 'https://www.youtube.com/watch?v=07FYdnEawAQ',
 557             'note': 'Test VEVO video with age protection (#956)',
 558             'info_dict': {
 559                 'id': '07FYdnEawAQ',
 560                 'ext': 'mp4',
 561                 'upload_date': '20130703',
 562                 'title': 'Justin Timberlake - Tunnel Vision (Official Music Video) (Explicit)',
 563                 'alt_title': 'Tunnel Vision',
 564                 'description': 'md5:07dab3356cde4199048e4c7cd93471e1',
 565                 'duration': 419,
 566                 'uploader': 'justintimberlakeVEVO',
 567                 'uploader_id': 'justintimberlakeVEVO',
 568                 'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/justintimberlakeVEVO',
 569                 'creator': 'Justin Timberlake',
 570                 'track': 'Tunnel Vision',
 571                 'artist': 'Justin Timberlake',
 572                 'age_limit': 18,
 573             }
 574         },
 575         {
 576             'url': '//www.YouTube.com/watch?v=yZIXLfi8CZQ',
 577             'note': 'Embed-only video (#1746)',
 578             'info_dict': {
 579                 'id': 'yZIXLfi8CZQ',
 580                 'ext': 'mp4',
 581                 'upload_date': '20120608',
 582                 'title': 'Principal Sexually Assaults A Teacher - Episode 117 - 8th June 2012',
 583                 'description': 'md5:09b78bd971f1e3e289601dfba15ca4f7',
 584                 'uploader': 'SET India',
 585                 'uploader_id': 'setindia',
 586                 'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/setindia',
 587                 'age_limit': 18,
 588             }
 589         },
 590         {
 591             'url': 'https://www.youtube.com/watch?v=BaW_jenozKc&v=UxxajLWwzqY',
 592             'note': 'Use the first video ID in the URL',
 593             'info_dict': {
 594                 'id': 'BaW_jenozKc',
 595                 'ext': 'mp4',
 596                 'title': 'youtube-dl test video "\'/\\ä↭𝕐',
 597                 'uploader': 'Philipp Hagemeister',
 598                 'uploader_id': 'phihag',
 599                 'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/phihag',
 600                 'upload_date': '20121002',
 601                 'description': 'test chars:  "\'/\\ä↭𝕐\ntest URL: https://github.com/rg3/youtube-dl/issues/1892\n\nThis is a test video for youtube-dl.\n\nFor more information, contact phihag@phihag.de .',
 602                 'categories': ['Science & Technology'],
 603                 'tags': ['youtube-dl'],
 604                 'duration': 10,
 605                 'view_count': int,
 606                 'like_count': int,
 607                 'dislike_count': int,
 608             },
 609             'params': {
 610                 'skip_download': True,
 611             },
 612         },
 613         {
 614             'url': 'https://www.youtube.com/watch?v=a9LDPn-MO4I',
 615             'note': '256k DASH audio (format 141) via DASH manifest',
 616             'info_dict': {
 617                 'id': 'a9LDPn-MO4I',
 618                 'ext': 'm4a',
 619                 'upload_date': '20121002',
 620                 'uploader_id': '8KVIDEO',
 621                 'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/8KVIDEO',
 622                 'description': '',
 623                 'uploader': '8KVIDEO',
 624                 'title': 'UHDTV TEST 8K VIDEO.mp4'
 625             },
 626             'params': {
 627                 'youtube_include_dash_manifest': True,
 628                 'format': '141',
 629             },
 630             'skip': 'format 141 not served anymore',
 631         },
 632         # DASH manifest with encrypted signature
 633         {
 634             'url': 'https://www.youtube.com/watch?v=IB3lcPjvWLA',
 635             'info_dict': {
 636                 'id': 'IB3lcPjvWLA',
 637                 'ext': 'm4a',
 638                 'title': 'Afrojack, Spree Wilson - The Spark (Official Music Video) ft. Spree Wilson',
 639                 'description': 'md5:8f5e2b82460520b619ccac1f509d43bf',
 640                 'duration': 244,
 641                 'uploader': 'AfrojackVEVO',
 642                 'uploader_id': 'AfrojackVEVO',
 643                 'upload_date': '20131011',
 644             },
 645             'params': {
 646                 'youtube_include_dash_manifest': True,
 647                 'format': '141/bestaudio[ext=m4a]',
 648             },
 649         },
 650         # JS player signature function name containing $
 651         {
 652             'url': 'https://www.youtube.com/watch?v=nfWlot6h_JM',
 653             'info_dict': {
 654                 'id': 'nfWlot6h_JM',
 655                 'ext': 'm4a',
 656                 'title': 'Taylor Swift - Shake It Off',
 657                 'description': 'md5:bec2185232c05479482cb5a9b82719bf',
 658                 'duration': 242,
 659                 'uploader': 'TaylorSwiftVEVO',
 660                 'uploader_id': 'TaylorSwiftVEVO',
 661                 'upload_date': '20140818',
 662                 'creator': 'Taylor Swift',
 663             },
 664             'params': {
 665                 'youtube_include_dash_manifest': True,
 666                 'format': '141/bestaudio[ext=m4a]',
 667             },
 668         },
 669         # Controversy video
 670         {
 671             'url': 'https://www.youtube.com/watch?v=T4XJQO3qol8',
 672             'info_dict': {
 673                 'id': 'T4XJQO3qol8',
 674                 'ext': 'mp4',
 675                 'duration': 219,
 676                 'upload_date': '20100909',
 677                 'uploader': 'Amazing Atheist',
 678                 'uploader_id': 'TheAmazingAtheist',
 679                 'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/TheAmazingAtheist',
 680                 'title': 'Burning Everyone\'s Koran',
 681                 'description': 'SUBSCRIBE: http://www.youtube.com/saturninefilms\n\nEven Obama has taken a stand against freedom on this issue: http://www.huffingtonpost.com/2010/09/09/obama-gma-interview-quran_n_710282.html',
 682             }
 683         },
 684         # Normal age-gate video (No vevo, embed allowed)
 685         {
 686             'url': 'https://youtube.com/watch?v=HtVdAasjOgU',
 687             'info_dict': {
 688                 'id': 'HtVdAasjOgU',
 689                 'ext': 'mp4',
 690                 'title': 'The Witcher 3: Wild Hunt - The Sword Of Destiny Trailer',
 691                 'description': r're:(?s).{100,}About the Game\n.*?The Witcher 3: Wild Hunt.{100,}',
 692                 'duration': 142,
 693                 'uploader': 'The Witcher',
 694                 'uploader_id': 'WitcherGame',
 695                 'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/WitcherGame',
 696                 'upload_date': '20140605',
 697                 'age_limit': 18,
 698             },
 699         },
 700         # Age-gate video with encrypted signature
 701         {
 702             'url': 'https://www.youtube.com/watch?v=6kLq3WMV1nU',
 703             'info_dict': {
 704                 'id': '6kLq3WMV1nU',
 705                 'ext': 'mp4',
 706                 'title': 'Dedication To My Ex (Miss That) (Lyric Video)',
 707                 'description': 'md5:33765bb339e1b47e7e72b5490139bb41',
 708                 'duration': 246,
 709                 'uploader': 'LloydVEVO',
 710                 'uploader_id': 'LloydVEVO',
 711                 'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/LloydVEVO',
 712                 'upload_date': '20110629',
 713                 'age_limit': 18,
 714             },
 715         },
 716         # video_info is None (https://github.com/ytdl-org/youtube-dl/issues/4421)
 717         # YouTube Red ad is not captured for creator
 718         {
 719             'url': '__2ABJjxzNo',
 720             'info_dict': {
 721                 'id': '__2ABJjxzNo',
 722                 'ext': 'mp4',
 723                 'duration': 266,
 724                 'upload_date': '20100430',
 725                 'uploader_id': 'deadmau5',
 726                 'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/deadmau5',
 727                 'creator': 'deadmau5',
 728                 'description': 'md5:12c56784b8032162bb936a5f76d55360',
 729                 'uploader': 'deadmau5',
 730                 'title': 'Deadmau5 - Some Chords (HD)',
 731                 'alt_title': 'Some Chords',
 732             },
 733             'expected_warnings': [
 734                 'DASH manifest missing',
 735             ]
 736         },
 737         # Olympics (https://github.com/ytdl-org/youtube-dl/issues/4431)
 738         {
 739             'url': 'lqQg6PlCWgI',
 740             'info_dict': {
 741                 'id': 'lqQg6PlCWgI',
 742                 'ext': 'mp4',
 743                 'duration': 6085,
 744                 'upload_date': '20150827',
 745                 'uploader_id': 'olympic',
 746                 'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/olympic',
 747                 'description': 'HO09  - Women -  GER-AUS - Hockey - 31 July 2012 - London 2012 Olympic Games',
 748                 'uploader': 'Olympic',
 749                 'title': 'Hockey - Women -  GER-AUS - London 2012 Olympic Games',
 750             },
 751             'params': {
 752                 'skip_download': 'requires avconv',
 753             }
 754         },
 755         # Non-square pixels
 756         {
 757             'url': 'https://www.youtube.com/watch?v=_b-2C3KPAM0',
 758             'info_dict': {
 759                 'id': '_b-2C3KPAM0',
 760                 'ext': 'mp4',
 761                 'stretched_ratio': 16 / 9.,
 762                 'duration': 85,
 763                 'upload_date': '20110310',
 764                 'uploader_id': 'AllenMeow',
 765                 'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/AllenMeow',
 766                 'description': 'made by Wacom from Korea | 字幕&加油添醋 by TY\'s Allen | 感謝heylisa00cavey1001同學熱情提供梗及翻譯',
 767                 'uploader': '孫ᄋᄅ',
 768                 'title': '[A-made] 變態妍字幕版 太妍 我就是這樣的人',
 769             },
 770         },
 771         # url_encoded_fmt_stream_map is empty string
 772         {
 773             'url': 'qEJwOuvDf7I',
 774             'info_dict': {
 775                 'id': 'qEJwOuvDf7I',
 776                 'ext': 'webm',
 777                 'title': 'Обсуждение судебной практики по выборам 14 сентября 2014 года в Санкт-Петербурге',
 778                 'description': '',
 779                 'upload_date': '20150404',
 780                 'uploader_id': 'spbelect',
 781                 'uploader': 'Наблюдатели Петербурга',
 782             },
 783             'params': {
 784                 'skip_download': 'requires avconv',
 785             },
 786             'skip': 'This live event has ended.',
 787         },
 788         # Extraction from multiple DASH manifests (https://github.com/ytdl-org/youtube-dl/pull/6097)
 789         {
 790             'url': 'https://www.youtube.com/watch?v=FIl7x6_3R5Y',
 791             'info_dict': {
 792                 'id': 'FIl7x6_3R5Y',
 793                 'ext': 'webm',
 794                 'title': 'md5:7b81415841e02ecd4313668cde88737a',
 795                 'description': 'md5:116377fd2963b81ec4ce64b542173306',
 796                 'duration': 220,
 797                 'upload_date': '20150625',
 798                 'uploader_id': 'dorappi2000',
 799                 'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/dorappi2000',
 800                 'uploader': 'dorappi2000',
 801                 'formats': 'mincount:31',
 802             },
 803             'skip': 'not actual anymore',
 804         },
 805         # DASH manifest with segment_list
 806         {
 807             'url': 'https://www.youtube.com/embed/CsmdDsKjzN8',
 808             'md5': '8ce563a1d667b599d21064e982ab9e31',
 809             'info_dict': {
 810                 'id': 'CsmdDsKjzN8',
 811                 'ext': 'mp4',
 812                 'upload_date': '20150501',  # According to '<meta itemprop="datePublished"', but in other places it's 20150510
 813                 'uploader': 'Airtek',
 814                 'description': 'Retransmisión en directo de la XVIII media maratón de Zaragoza.',
 815                 'uploader_id': 'UCzTzUmjXxxacNnL8I3m4LnQ',
 816                 'title': 'Retransmisión XVIII Media maratón Zaragoza 2015',
 817             },
 818             'params': {
 819                 'youtube_include_dash_manifest': True,
 820                 'format': '135',  # bestvideo
 821             },
 822             'skip': 'This live event has ended.',
 823         },
 824         {
 825             # Multifeed videos (multiple cameras), URL is for Main Camera
 826             'url': 'https://www.youtube.com/watch?v=jqWvoWXjCVs',
 827             'info_dict': {
 828                 'id': 'jqWvoWXjCVs',
 829                 'title': 'teamPGP: Rocket League Noob Stream',
 830                 'description': 'md5:dc7872fb300e143831327f1bae3af010',
 831             },
 832             'playlist': [{
 833                 'info_dict': {
 834                     'id': 'jqWvoWXjCVs',
 835                     'ext': 'mp4',
 836                     'title': 'teamPGP: Rocket League Noob Stream (Main Camera)',
 837                     'description': 'md5:dc7872fb300e143831327f1bae3af010',
 838                     'duration': 7335,
 839                     'upload_date': '20150721',
 840                     'uploader': 'Beer Games Beer',
 841                     'uploader_id': 'beergamesbeer',
 842                     'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/beergamesbeer',
 843                     'license': 'Standard YouTube License',
 844                 },
 845             }, {
 846                 'info_dict': {
 847                     'id': '6h8e8xoXJzg',
 848                     'ext': 'mp4',
 849                     'title': 'teamPGP: Rocket League Noob Stream (kreestuh)',
 850                     'description': 'md5:dc7872fb300e143831327f1bae3af010',
 851                     'duration': 7337,
 852                     'upload_date': '20150721',
 853                     'uploader': 'Beer Games Beer',
 854                     'uploader_id': 'beergamesbeer',
 855                     'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/beergamesbeer',
 856                     'license': 'Standard YouTube License',
 857                 },
 858             }, {
 859                 'info_dict': {
 860                     'id': 'PUOgX5z9xZw',
 861                     'ext': 'mp4',
 862                     'title': 'teamPGP: Rocket League Noob Stream (grizzle)',
 863                     'description': 'md5:dc7872fb300e143831327f1bae3af010',
 864                     'duration': 7337,
 865                     'upload_date': '20150721',
 866                     'uploader': 'Beer Games Beer',
 867                     'uploader_id': 'beergamesbeer',
 868                     'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/beergamesbeer',
 869                     'license': 'Standard YouTube License',
 870                 },
 871             }, {
 872                 'info_dict': {
 873                     'id': 'teuwxikvS5k',
 874                     'ext': 'mp4',
 875                     'title': 'teamPGP: Rocket League Noob Stream (zim)',
 876                     'description': 'md5:dc7872fb300e143831327f1bae3af010',
 877                     'duration': 7334,
 878                     'upload_date': '20150721',
 879                     'uploader': 'Beer Games Beer',
 880                     'uploader_id': 'beergamesbeer',
 881                     'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/beergamesbeer',
 882                     'license': 'Standard YouTube License',
 883                 },
 884             }],
 885             'params': {
 886                 'skip_download': True,
 887             },
 888             'skip': 'This video is not available.',
 889         },
 890         {
 891             # Multifeed video with comma in title (see https://github.com/ytdl-org/youtube-dl/issues/8536)
 892             'url': 'https://www.youtube.com/watch?v=gVfLd0zydlo',
 893             'info_dict': {
 894                 'id': 'gVfLd0zydlo',
 895                 'title': 'DevConf.cz 2016 Day 2 Workshops 1 14:00 - 15:30',
 896             },
 897             'playlist_count': 2,
 898             'skip': 'Not multifeed anymore',
 899         },
 900         {
 901             'url': 'https://vid.plus/FlRa-iH7PGw',
 902             'only_matching': True,
 903         },
 904         {
 905             'url': 'https://zwearz.com/watch/9lWxNJF-ufM/electra-woman-dyna-girl-official-trailer-grace-helbig.html',
 906             'only_matching': True,
 907         },
 908         {
 909             # Title with JS-like syntax "};" (see https://github.com/ytdl-org/youtube-dl/issues/7468)
 910             # Also tests cut-off URL expansion in video description (see
 911             # https://github.com/ytdl-org/youtube-dl/issues/1892,
 912             # https://github.com/ytdl-org/youtube-dl/issues/8164)
 913             'url': 'https://www.youtube.com/watch?v=lsguqyKfVQg',
 914             'info_dict': {
 915                 'id': 'lsguqyKfVQg',
 916                 'ext': 'mp4',
 917                 'title': '{dark walk}; Loki/AC/Dishonored; collab w/Elflover21',
 918                 'alt_title': 'Dark Walk - Position Music',
 919                 'description': 'md5:8085699c11dc3f597ce0410b0dcbb34a',
 920                 'duration': 133,
 921                 'upload_date': '20151119',
 922                 'uploader_id': 'IronSoulElf',
 923                 'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/IronSoulElf',
 924                 'uploader': 'IronSoulElf',
 925                 'creator': 'Todd Haberman,  Daniel Law Heath and Aaron Kaplan',
 926                 'track': 'Dark Walk - Position Music',
 927                 'artist': 'Todd Haberman,  Daniel Law Heath and Aaron Kaplan',
 928                 'album': 'Position Music - Production Music Vol. 143 - Dark Walk',
 929             },
 930             'params': {
 931                 'skip_download': True,
 932             },
 933         },
 934         {
 935             # Tags with '};' (see https://github.com/ytdl-org/youtube-dl/issues/7468)
 936             'url': 'https://www.youtube.com/watch?v=Ms7iBXnlUO8',
 937             'only_matching': True,
 938         },
 939         {
 940             # Video with yt:stretch=17:0
 941             'url': 'https://www.youtube.com/watch?v=Q39EVAstoRM',
 942             'info_dict': {
 943                 'id': 'Q39EVAstoRM',
 944                 'ext': 'mp4',
 945                 'title': 'Clash Of Clans#14 Dicas De Ataque Para CV 4',
 946                 'description': 'md5:ee18a25c350637c8faff806845bddee9',
 947                 'upload_date': '20151107',
 948                 'uploader_id': 'UCCr7TALkRbo3EtFzETQF1LA',
 949                 'uploader': 'CH GAMER DROID',
 950             },
 951             'params': {
 952                 'skip_download': True,
 953             },
 954             'skip': 'This video does not exist.',
 955         },
 956         {
 957             # Video licensed under Creative Commons
 958             'url': 'https://www.youtube.com/watch?v=M4gD1WSo5mA',
 959             'info_dict': {
 960                 'id': 'M4gD1WSo5mA',
 961                 'ext': 'mp4',
 962                 'title': 'md5:e41008789470fc2533a3252216f1c1d1',
 963                 'description': 'md5:a677553cf0840649b731a3024aeff4cc',
 964                 'duration': 721,
 965                 'upload_date': '20150127',
 966                 'uploader_id': 'BerkmanCenter',
 967                 'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/BerkmanCenter',
 968                 'uploader': 'The Berkman Klein Center for Internet & Society',
 969                 'license': 'Creative Commons Attribution license (reuse allowed)',
 970             },
 971             'params': {
 972                 'skip_download': True,
 973             },
 974         },
 975         {
 976             # Channel-like uploader_url
 977             'url': 'https://www.youtube.com/watch?v=eQcmzGIKrzg',
 978             'info_dict': {
 979                 'id': 'eQcmzGIKrzg',
 980                 'ext': 'mp4',
 981                 'title': 'Democratic Socialism and Foreign Policy | Bernie Sanders',
 982                 'description': 'md5:dda0d780d5a6e120758d1711d062a867',
 983                 'duration': 4060,
 984                 'upload_date': '20151119',
 985                 'uploader': 'Bernie Sanders',
 986                 'uploader_id': 'UCH1dpzjCEiGAt8CXkryhkZg',
 987                 'uploader_url': r're:https?://(?:www\.)?youtube\.com/channel/UCH1dpzjCEiGAt8CXkryhkZg',
 988                 'license': 'Creative Commons Attribution license (reuse allowed)',
 989             },
 990             'params': {
 991                 'skip_download': True,
 992             },
 993         },
 994         {
 995             'url': 'https://www.youtube.com/watch?feature=player_embedded&amp;amp;v=V36LpHqtcDY',
 996             'only_matching': True,
 997         },
 998         {
 999             # YouTube Red paid video (https://github.com/ytdl-org/youtube-dl/issues/10059)
1000             'url': 'https://www.youtube.com/watch?v=i1Ko8UG-Tdo',
1001             'only_matching': True,
1002         },
1003         {
1004             # Rental video preview
1005             'url': 'https://www.youtube.com/watch?v=yYr8q0y5Jfg',
1006             'info_dict': {
1007                 'id': 'uGpuVWrhIzE',
1008                 'ext': 'mp4',
1009                 'title': 'Piku - Trailer',
1010                 'description': 'md5:c36bd60c3fd6f1954086c083c72092eb',
1011                 'upload_date': '20150811',
1012                 'uploader': 'FlixMatrix',
1013                 'uploader_id': 'FlixMatrixKaravan',
1014                 'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/FlixMatrixKaravan',
1015                 'license': 'Standard YouTube License',
1016             },
1017             'params': {
1018                 'skip_download': True,
1019             },
1020             'skip': 'This video is not available.',
1021         },
1022         {
1023             # YouTube Red video with episode data
1024             'url': 'https://www.youtube.com/watch?v=iqKdEhx-dD4',
1025             'info_dict': {
1026                 'id': 'iqKdEhx-dD4',
1027                 'ext': 'mp4',
1028                 'title': 'Isolation - Mind Field (Ep 1)',
1029                 'description': 'md5:46a29be4ceffa65b92d277b93f463c0f',
1030                 'duration': 2085,
1031                 'upload_date': '20170118',
1032                 'uploader': 'Vsauce',
1033                 'uploader_id': 'Vsauce',
1034                 'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/Vsauce',
1035                 'series': 'Mind Field',
1036                 'season_number': 1,
1037                 'episode_number': 1,
1038             },
1039             'params': {
1040                 'skip_download': True,
1041             },
1042             'expected_warnings': [
1043                 'Skipping DASH manifest',
1044             ],
1045         },
1046         {
1047             # The following content has been identified by the YouTube community
1048             # as inappropriate or offensive to some audiences.
1049             'url': 'https://www.youtube.com/watch?v=6SJNVb0GnPI',
1050             'info_dict': {
1051                 'id': '6SJNVb0GnPI',
1052                 'ext': 'mp4',
1053                 'title': 'Race Differences in Intelligence',
1054                 'description': 'md5:5d161533167390427a1f8ee89a1fc6f1',
1055                 'duration': 965,
1056                 'upload_date': '20140124',
1057                 'uploader': 'New Century Foundation',
1058                 'uploader_id': 'UCEJYpZGqgUob0zVVEaLhvVg',
1059                 'uploader_url': r're:https?://(?:www\.)?youtube\.com/channel/UCEJYpZGqgUob0zVVEaLhvVg',
1060             },
1061             'params': {
1062                 'skip_download': True,
1063             },
1064         },
1065         {
1066             # itag 212
1067             'url': '1t24XAntNCY',
1068             'only_matching': True,
1069         },
1070         {
1071             # geo restricted to JP
1072             'url': 'sJL6WA-aGkQ',
1073             'only_matching': True,
1074         },
1075         {
1076             'url': 'https://www.youtube.com/watch?v=MuAGGZNfUkU&list=RDMM',
1077             'only_matching': True,
1078         },
1079         {
1080             'url': 'https://invidio.us/watch?v=BaW_jenozKc',
1081             'only_matching': True,
1082         },
1083         {
1084             # DRM protected
1085             'url': 'https://www.youtube.com/watch?v=s7_qI6_mIXc',
1086             'only_matching': True,
1087         },
1088         {
1089             # Video with unsupported adaptive stream type formats
1090             'url': 'https://www.youtube.com/watch?v=Z4Vy8R84T1U',
1091             'info_dict': {
1092                 'id': 'Z4Vy8R84T1U',
1093                 'ext': 'mp4',
1094                 'title': 'saman SMAN 53 Jakarta(Sancety) opening COFFEE4th at SMAN 53 Jakarta',
1095                 'description': 'md5:d41d8cd98f00b204e9800998ecf8427e',
1096                 'duration': 433,
1097                 'upload_date': '20130923',
1098                 'uploader': 'Amelia Putri Harwita',
1099                 'uploader_id': 'UCpOxM49HJxmC1qCalXyB3_Q',
1100                 'uploader_url': r're:https?://(?:www\.)?youtube\.com/channel/UCpOxM49HJxmC1qCalXyB3_Q',
1101                 'formats': 'maxcount:10',
1102             },
1103             'params': {
1104                 'skip_download': True,
1105                 'youtube_include_dash_manifest': False,
1106             },
1107         },
1108         {
1109             # Youtube Music Auto-generated description
1110             'url': 'https://music.youtube.com/watch?v=MgNrAu2pzNs',
1111             'info_dict': {
1112                 'id': 'MgNrAu2pzNs',
1113                 'ext': 'mp4',
1114                 'title': 'Voyeur Girl',
1115                 'description': 'md5:7ae382a65843d6df2685993e90a8628f',
1116                 'upload_date': '20190312',
1117                 'uploader': 'Various Artists - Topic',
1118                 'uploader_id': 'UCVWKBi1ELZn0QX2CBLSkiyw',
1119                 'artist': 'Stephen',
1120                 'track': 'Voyeur Girl',
1121                 'album': 'it\'s too much love to know my dear',
1122                 'release_date': '20190313',
1123                 'release_year': 2019,
1124             },
1125             'params': {
1126                 'skip_download': True,
1127             },
1128         },
1129         {
1130             # Youtube Music Auto-generated description
1131             # Retrieve 'artist' field from 'Artist:' in video description
1132             # when it is present on youtube music video
1133             'url': 'https://www.youtube.com/watch?v=k0jLE7tTwjY',
1134             'info_dict': {
1135                 'id': 'k0jLE7tTwjY',
1136                 'ext': 'mp4',
1137                 'title': 'Latch Feat. Sam Smith',
1138                 'description': 'md5:3cb1e8101a7c85fcba9b4fb41b951335',
1139                 'upload_date': '20150110',
1140                 'uploader': 'Various Artists - Topic',
1141                 'uploader_id': 'UCNkEcmYdjrH4RqtNgh7BZ9w',
1142                 'artist': 'Disclosure',
1143                 'track': 'Latch Feat. Sam Smith',
1144                 'album': 'Latch Featuring Sam Smith',
1145                 'release_date': '20121008',
1146                 'release_year': 2012,
1147             },
1148             'params': {
1149                 'skip_download': True,
1150             },
1151         },
1152         {
1153             # Youtube Music Auto-generated description
1154             # handle multiple artists on youtube music video
1155             'url': 'https://www.youtube.com/watch?v=74qn0eJSjpA',
1156             'info_dict': {
1157                 'id': '74qn0eJSjpA',
1158                 'ext': 'mp4',
1159                 'title': 'Eastside',
1160                 'description': 'md5:290516bb73dcbfab0dcc4efe6c3de5f2',
1161                 'upload_date': '20180710',
1162                 'uploader': 'Benny Blanco - Topic',
1163                 'uploader_id': 'UCzqz_ksRu_WkIzmivMdIS7A',
1164                 'artist': 'benny blanco, Halsey, Khalid',
1165                 'track': 'Eastside',
1166                 'album': 'Eastside',
1167                 'release_date': '20180713',
1168                 'release_year': 2018,
1169             },
1170             'params': {
1171                 'skip_download': True,
1172             },
1173         },
1174         {
1175             # Youtube Music Auto-generated description
1176             # handle youtube music video with release_year and no release_date
1177             'url': 'https://www.youtube.com/watch?v=-hcAI0g-f5M',
1178             'info_dict': {
1179                 'id': '-hcAI0g-f5M',
1180                 'ext': 'mp4',
1181                 'title': 'Put It On Me',
1182                 'description': 'md5:93c55acc682ae7b0c668f2e34e1c069e',
1183                 'upload_date': '20180426',
1184                 'uploader': 'Matt Maeson - Topic',
1185                 'uploader_id': 'UCnEkIGqtGcQMLk73Kp-Q5LQ',
1186                 'artist': 'Matt Maeson',
1187                 'track': 'Put It On Me',
1188                 'album': 'The Hearse',
1189                 'release_date': None,
1190                 'release_year': 2018,
1191             },
1192             'params': {
1193                 'skip_download': True,
1194             },
1195         },
1196     ]
1197
1198     def __init__(self, *args, **kwargs):
1199         super(YoutubeIE, self).__init__(*args, **kwargs)
1200         self._player_cache = {}
1201
1202     def report_video_info_webpage_download(self, video_id):
1203         """Report attempt to download video info webpage."""
1204         self.to_screen('%s: Downloading video info webpage' % video_id)
1205
1206     def report_information_extraction(self, video_id):
1207         """Report attempt to extract video information."""
1208         self.to_screen('%s: Extracting video information' % video_id)
1209
1210     def report_unavailable_format(self, video_id, format):
1211         """Report extracted video URL."""
1212         self.to_screen('%s: Format %s not available' % (video_id, format))
1213
1214     def report_rtmp_download(self):
1215         """Indicate the download will use the RTMP protocol."""
1216         self.to_screen('RTMP download detected')
1217
1218     def _signature_cache_id(self, example_sig):
1219         """ Return a string representation of a signature """
1220         return '.'.join(compat_str(len(part)) for part in example_sig.split('.'))
1221
1222     def _extract_signature_function(self, video_id, player_url, example_sig):
1223         id_m = re.match(
1224             r'.*?-(?P<id>[a-zA-Z0-9_-]+)(?:/watch_as3|/html5player(?:-new)?|(?:/[a-z]{2,3}_[A-Z]{2})?/base)?\.(?P<ext>[a-z]+)$',
1225             player_url)
1226         if not id_m:
1227             raise ExtractorError('Cannot identify player %r' % player_url)
1228         player_type = id_m.group('ext')
1229         player_id = id_m.group('id')
1230
1231         # Read from filesystem cache
1232         func_id = '%s_%s_%s' % (
1233             player_type, player_id, self._signature_cache_id(example_sig))
1234         assert os.path.basename(func_id) == func_id
1235
1236         cache_spec = self._downloader.cache.load('youtube-sigfuncs', func_id)
1237         if cache_spec is not None:
1238             return lambda s: ''.join(s[i] for i in cache_spec)
1239
1240         download_note = (
1241             'Downloading player %s' % player_url
1242             if self._downloader.params.get('verbose') else
1243             'Downloading %s player %s' % (player_type, player_id)
1244         )
1245         if player_type == 'js':
1246             code = self._download_webpage(
1247                 player_url, video_id,
1248                 note=download_note,
1249                 errnote='Download of %s failed' % player_url)
1250             res = self._parse_sig_js(code)
1251         elif player_type == 'swf':
1252             urlh = self._request_webpage(
1253                 player_url, video_id,
1254                 note=download_note,
1255                 errnote='Download of %s failed' % player_url)
1256             code = urlh.read()
1257             res = self._parse_sig_swf(code)
1258         else:
1259             assert False, 'Invalid player type %r' % player_type
1260
1261         test_string = ''.join(map(compat_chr, range(len(example_sig))))
1262         cache_res = res(test_string)
1263         cache_spec = [ord(c) for c in cache_res]
1264
1265         self._downloader.cache.store('youtube-sigfuncs', func_id, cache_spec)
1266         return res
1267
1268     def _print_sig_code(self, func, example_sig):
1269         def gen_sig_code(idxs):
1270             def _genslice(start, end, step):
1271                 starts = '' if start == 0 else str(start)
1272                 ends = (':%d' % (end + step)) if end + step >= 0 else ':'
1273                 steps = '' if step == 1 else (':%d' % step)
1274                 return 's[%s%s%s]' % (starts, ends, steps)
1275
1276             step = None
1277             # Quelch pyflakes warnings - start will be set when step is set
1278             start = '(Never used)'
1279             for i, prev in zip(idxs[1:], idxs[:-1]):
1280                 if step is not None:
1281                     if i - prev == step:
1282                         continue
1283                     yield _genslice(start, prev, step)
1284                     step = None
1285                     continue
1286                 if i - prev in [-1, 1]:
1287                     step = i - prev
1288                     start = prev
1289                     continue
1290                 else:
1291                     yield 's[%d]' % prev
1292             if step is None:
1293                 yield 's[%d]' % i
1294             else:
1295                 yield _genslice(start, i, step)
1296
1297         test_string = ''.join(map(compat_chr, range(len(example_sig))))
1298         cache_res = func(test_string)
1299         cache_spec = [ord(c) for c in cache_res]
1300         expr_code = ' + '.join(gen_sig_code(cache_spec))
1301         signature_id_tuple = '(%s)' % (
1302             ', '.join(compat_str(len(p)) for p in example_sig.split('.')))
1303         code = ('if tuple(len(p) for p in s.split(\'.\')) == %s:\n'
1304                 '    return %s\n') % (signature_id_tuple, expr_code)
1305         self.to_screen('Extracted signature function:\n' + code)
1306
1307     def _parse_sig_js(self, jscode):
1308         funcname = self._search_regex(
1309             (r'(["\'])signature\1\s*,\s*(?P<sig>[a-zA-Z0-9$]+)\(',
1310              r'\.sig\|\|(?P<sig>[a-zA-Z0-9$]+)\(',
1311              r'yt\.akamaized\.net/\)\s*\|\|\s*.*?\s*c\s*&&\s*d\.set\([^,]+\s*,\s*(?:encodeURIComponent\s*\()?(?P<sig>[a-zA-Z0-9$]+)\(',
1312              r'\bc\s*&&\s*d\.set\([^,]+\s*,\s*(?:encodeURIComponent\s*\()?\s*(?P<sig>[a-zA-Z0-9$]+)\(',
1313              r'\bc\s*&&\s*d\.set\([^,]+\s*,\s*\([^)]*\)\s*\(\s*(?P<sig>[a-zA-Z0-9$]+)\('),
1314             jscode, 'Initial JS player signature function name', group='sig')
1315
1316         jsi = JSInterpreter(jscode)
1317         initial_function = jsi.extract_function(funcname)
1318         return lambda s: initial_function([s])
1319
1320     def _parse_sig_swf(self, file_contents):
1321         swfi = SWFInterpreter(file_contents)
1322         TARGET_CLASSNAME = 'SignatureDecipher'
1323         searched_class = swfi.extract_class(TARGET_CLASSNAME)
1324         initial_function = swfi.extract_function(searched_class, 'decipher')
1325         return lambda s: initial_function([s])
1326
1327     def _decrypt_signature(self, s, video_id, player_url, age_gate=False):
1328         """Turn the encrypted s field into a working signature"""
1329
1330         if player_url is None:
1331             raise ExtractorError('Cannot decrypt signature without player_url')
1332
1333         if player_url.startswith('//'):
1334             player_url = 'https:' + player_url
1335         elif not re.match(r'https?://', player_url):
1336             player_url = compat_urlparse.urljoin(
1337                 'https://www.youtube.com', player_url)
1338         try:
1339             player_id = (player_url, self._signature_cache_id(s))
1340             if player_id not in self._player_cache:
1341                 func = self._extract_signature_function(
1342                     video_id, player_url, s
1343                 )
1344                 self._player_cache[player_id] = func
1345             func = self._player_cache[player_id]
1346             if self._downloader.params.get('youtube_print_sig_code'):
1347                 self._print_sig_code(func, s)
1348             return func(s)
1349         except Exception as e:
1350             tb = traceback.format_exc()
1351             raise ExtractorError(
1352                 'Signature extraction failed: ' + tb, cause=e)
1353
1354     def _get_subtitles(self, video_id, webpage):
1355         try:
1356             subs_doc = self._download_xml(
1357                 'https://video.google.com/timedtext?hl=en&type=list&v=%s' % video_id,
1358                 video_id, note=False)
1359         except ExtractorError as err:
1360             self._downloader.report_warning('unable to download video subtitles: %s' % error_to_compat_str(err))
1361             return {}
1362
1363         sub_lang_list = {}
1364         for track in subs_doc.findall('track'):
1365             lang = track.attrib['lang_code']
1366             if lang in sub_lang_list:
1367                 continue
1368             sub_formats = []
1369             for ext in self._SUBTITLE_FORMATS:
1370                 params = compat_urllib_parse_urlencode({
1371                     'lang': lang,
1372                     'v': video_id,
1373                     'fmt': ext,
1374                     'name': track.attrib['name'].encode('utf-8'),
1375                 })
1376                 sub_formats.append({
1377                     'url': 'https://www.youtube.com/api/timedtext?' + params,
1378                     'ext': ext,
1379                 })
1380             sub_lang_list[lang] = sub_formats
1381         if not sub_lang_list:
1382             self._downloader.report_warning('video doesn\'t have subtitles')
1383             return {}
1384         return sub_lang_list
1385
1386     def _get_ytplayer_config(self, video_id, webpage):
1387         patterns = (
1388             # User data may contain arbitrary character sequences that may affect
1389             # JSON extraction with regex, e.g. when '};' is contained the second
1390             # regex won't capture the whole JSON. Yet working around by trying more
1391             # concrete regex first keeping in mind proper quoted string handling
1392             # to be implemented in future that will replace this workaround (see
1393             # https://github.com/ytdl-org/youtube-dl/issues/7468,
1394             # https://github.com/ytdl-org/youtube-dl/pull/7599)
1395             r';ytplayer\.config\s*=\s*({.+?});ytplayer',
1396             r';ytplayer\.config\s*=\s*({.+?});',
1397         )
1398         config = self._search_regex(
1399             patterns, webpage, 'ytplayer.config', default=None)
1400         if config:
1401             return self._parse_json(
1402                 uppercase_escape(config), video_id, fatal=False)
1403
1404     def _get_automatic_captions(self, video_id, webpage):
1405         """We need the webpage for getting the captions url, pass it as an
1406            argument to speed up the process."""
1407         self.to_screen('%s: Looking for automatic captions' % video_id)
1408         player_config = self._get_ytplayer_config(video_id, webpage)
1409         err_msg = 'Couldn\'t find automatic captions for %s' % video_id
1410         if not player_config:
1411             self._downloader.report_warning(err_msg)
1412             return {}
1413         try:
1414             args = player_config['args']
1415             caption_url = args.get('ttsurl')
1416             if caption_url:
1417                 timestamp = args['timestamp']
1418                 # We get the available subtitles
1419                 list_params = compat_urllib_parse_urlencode({
1420                     'type': 'list',
1421                     'tlangs': 1,
1422                     'asrs': 1,
1423                 })
1424                 list_url = caption_url + '&' + list_params
1425                 caption_list = self._download_xml(list_url, video_id)
1426                 original_lang_node = caption_list.find('track')
1427                 if original_lang_node is None:
1428                     self._downloader.report_warning('Video doesn\'t have automatic captions')
1429                     return {}
1430                 original_lang = original_lang_node.attrib['lang_code']
1431                 caption_kind = original_lang_node.attrib.get('kind', '')
1432
1433                 sub_lang_list = {}
1434                 for lang_node in caption_list.findall('target'):
1435                     sub_lang = lang_node.attrib['lang_code']
1436                     sub_formats = []
1437                     for ext in self._SUBTITLE_FORMATS:
1438                         params = compat_urllib_parse_urlencode({
1439                             'lang': original_lang,
1440                             'tlang': sub_lang,
1441                             'fmt': ext,
1442                             'ts': timestamp,
1443                             'kind': caption_kind,
1444                         })
1445                         sub_formats.append({
1446                             'url': caption_url + '&' + params,
1447                             'ext': ext,
1448                         })
1449                     sub_lang_list[sub_lang] = sub_formats
1450                 return sub_lang_list
1451
1452             def make_captions(sub_url, sub_langs):
1453                 parsed_sub_url = compat_urllib_parse_urlparse(sub_url)
1454                 caption_qs = compat_parse_qs(parsed_sub_url.query)
1455                 captions = {}
1456                 for sub_lang in sub_langs:
1457                     sub_formats = []
1458                     for ext in self._SUBTITLE_FORMATS:
1459                         caption_qs.update({
1460                             'tlang': [sub_lang],
1461                             'fmt': [ext],
1462                         })
1463                         sub_url = compat_urlparse.urlunparse(parsed_sub_url._replace(
1464                             query=compat_urllib_parse_urlencode(caption_qs, True)))
1465                         sub_formats.append({
1466                             'url': sub_url,
1467                             'ext': ext,
1468                         })
1469                     captions[sub_lang] = sub_formats
1470                 return captions
1471
1472             # New captions format as of 22.06.2017
1473             player_response = args.get('player_response')
1474             if player_response and isinstance(player_response, compat_str):
1475                 player_response = self._parse_json(
1476                     player_response, video_id, fatal=False)
1477                 if player_response:
1478                     renderer = player_response['captions']['playerCaptionsTracklistRenderer']
1479                     base_url = renderer['captionTracks'][0]['baseUrl']
1480                     sub_lang_list = []
1481                     for lang in renderer['translationLanguages']:
1482                         lang_code = lang.get('languageCode')
1483                         if lang_code:
1484                             sub_lang_list.append(lang_code)
1485                     return make_captions(base_url, sub_lang_list)
1486
1487             # Some videos don't provide ttsurl but rather caption_tracks and
1488             # caption_translation_languages (e.g. 20LmZk1hakA)
1489             # Does not used anymore as of 22.06.2017
1490             caption_tracks = args['caption_tracks']
1491             caption_translation_languages = args['caption_translation_languages']
1492             caption_url = compat_parse_qs(caption_tracks.split(',')[0])['u'][0]
1493             sub_lang_list = []
1494             for lang in caption_translation_languages.split(','):
1495                 lang_qs = compat_parse_qs(compat_urllib_parse_unquote_plus(lang))
1496                 sub_lang = lang_qs.get('lc', [None])[0]
1497                 if sub_lang:
1498                     sub_lang_list.append(sub_lang)
1499             return make_captions(caption_url, sub_lang_list)
1500         # An extractor error can be raise by the download process if there are
1501         # no automatic captions but there are subtitles
1502         except (KeyError, IndexError, ExtractorError):
1503             self._downloader.report_warning(err_msg)
1504             return {}
1505
1506     def _mark_watched(self, video_id, video_info, player_response):
1507         playback_url = url_or_none(try_get(
1508             player_response,
1509             lambda x: x['playbackTracking']['videostatsPlaybackUrl']['baseUrl']) or try_get(
1510             video_info, lambda x: x['videostats_playback_base_url'][0]))
1511         if not playback_url:
1512             return
1513         parsed_playback_url = compat_urlparse.urlparse(playback_url)
1514         qs = compat_urlparse.parse_qs(parsed_playback_url.query)
1515
1516         # cpn generation algorithm is reverse engineered from base.js.
1517         # In fact it works even with dummy cpn.
1518         CPN_ALPHABET = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_'
1519         cpn = ''.join((CPN_ALPHABET[random.randint(0, 256) & 63] for _ in range(0, 16)))
1520
1521         qs.update({
1522             'ver': ['2'],
1523             'cpn': [cpn],
1524         })
1525         playback_url = compat_urlparse.urlunparse(
1526             parsed_playback_url._replace(query=compat_urllib_parse_urlencode(qs, True)))
1527
1528         self._download_webpage(
1529             playback_url, video_id, 'Marking watched',
1530             'Unable to mark watched', fatal=False)
1531
1532     @staticmethod
1533     def _extract_urls(webpage):
1534         # Embedded YouTube player
1535         entries = [
1536             unescapeHTML(mobj.group('url'))
1537             for mobj in re.finditer(r'''(?x)
1538             (?:
1539                 <iframe[^>]+?src=|
1540                 data-video-url=|
1541                 <embed[^>]+?src=|
1542                 embedSWF\(?:\s*|
1543                 <object[^>]+data=|
1544                 new\s+SWFObject\(
1545             )
1546             (["\'])
1547                 (?P<url>(?:https?:)?//(?:www\.)?youtube(?:-nocookie)?\.com/
1548                 (?:embed|v|p)/[0-9A-Za-z_-]{11}.*?)
1549             \1''', webpage)]
1550
1551         # lazyYT YouTube embed
1552         entries.extend(list(map(
1553             unescapeHTML,
1554             re.findall(r'class="lazyYT" data-youtube-id="([^"]+)"', webpage))))
1555
1556         # Wordpress "YouTube Video Importer" plugin
1557         matches = re.findall(r'''(?x)<div[^>]+
1558             class=(?P<q1>[\'"])[^\'"]*\byvii_single_video_player\b[^\'"]*(?P=q1)[^>]+
1559             data-video_id=(?P<q2>[\'"])([^\'"]+)(?P=q2)''', webpage)
1560         entries.extend(m[-1] for m in matches)
1561
1562         return entries
1563
1564     @staticmethod
1565     def _extract_url(webpage):
1566         urls = YoutubeIE._extract_urls(webpage)
1567         return urls[0] if urls else None
1568
1569     @classmethod
1570     def extract_id(cls, url):
1571         mobj = re.match(cls._VALID_URL, url, re.VERBOSE)
1572         if mobj is None:
1573             raise ExtractorError('Invalid URL: %s' % url)
1574         video_id = mobj.group(2)
1575         return video_id
1576
1577     def _extract_annotations(self, video_id):
1578         url = 'https://www.youtube.com/annotations_invideo?features=1&legacy=1&video_id=%s' % video_id
1579         return self._download_webpage(url, video_id, note='Searching for annotations.', errnote='Unable to download video annotations.')
1580
1581     @staticmethod
1582     def _extract_chapters(description, duration):
1583         if not description:
1584             return None
1585         chapter_lines = re.findall(
1586             r'(?:^|<br\s*/>)([^<]*<a[^>]+onclick=["\']yt\.www\.watch\.player\.seekTo[^>]+>(\d{1,2}:\d{1,2}(?::\d{1,2})?)</a>[^>]*)(?=$|<br\s*/>)',
1587             description)
1588         if not chapter_lines:
1589             return None
1590         chapters = []
1591         for next_num, (chapter_line, time_point) in enumerate(
1592                 chapter_lines, start=1):
1593             start_time = parse_duration(time_point)
1594             if start_time is None:
1595                 continue
1596             if start_time > duration:
1597                 break
1598             end_time = (duration if next_num == len(chapter_lines)
1599                         else parse_duration(chapter_lines[next_num][1]))
1600             if end_time is None:
1601                 continue
1602             if end_time > duration:
1603                 end_time = duration
1604             if start_time > end_time:
1605                 break
1606             chapter_title = re.sub(
1607                 r'<a[^>]+>[^<]+</a>', '', chapter_line).strip(' \t-')
1608             chapter_title = re.sub(r'\s+', ' ', chapter_title)
1609             chapters.append({
1610                 'start_time': start_time,
1611                 'end_time': end_time,
1612                 'title': chapter_title,
1613             })
1614         return chapters
1615
1616     def _real_extract(self, url):
1617         url, smuggled_data = unsmuggle_url(url, {})
1618
1619         proto = (
1620             'http' if self._downloader.params.get('prefer_insecure', False)
1621             else 'https')
1622
1623         start_time = None
1624         end_time = None
1625         parsed_url = compat_urllib_parse_urlparse(url)
1626         for component in [parsed_url.fragment, parsed_url.query]:
1627             query = compat_parse_qs(component)
1628             if start_time is None and 't' in query:
1629                 start_time = parse_duration(query['t'][0])
1630             if start_time is None and 'start' in query:
1631                 start_time = parse_duration(query['start'][0])
1632             if end_time is None and 'end' in query:
1633                 end_time = parse_duration(query['end'][0])
1634
1635         # Extract original video URL from URL with redirection, like age verification, using next_url parameter
1636         mobj = re.search(self._NEXT_URL_RE, url)
1637         if mobj:
1638             url = proto + '://www.youtube.com/' + compat_urllib_parse_unquote(mobj.group(1)).lstrip('/')
1639         video_id = self.extract_id(url)
1640
1641         # Get video webpage
1642         url = proto + '://www.youtube.com/watch?v=%s&gl=US&hl=en&has_verified=1&bpctr=9999999999' % video_id
1643         video_webpage = self._download_webpage(url, video_id)
1644
1645         # Attempt to extract SWF player URL
1646         mobj = re.search(r'swfConfig.*?"(https?:\\/\\/.*?watch.*?-.*?\.swf)"', video_webpage)
1647         if mobj is not None:
1648             player_url = re.sub(r'\\(.)', r'\1', mobj.group(1))
1649         else:
1650             player_url = None
1651
1652         dash_mpds = []
1653
1654         def add_dash_mpd(video_info):
1655             dash_mpd = video_info.get('dashmpd')
1656             if dash_mpd and dash_mpd[0] not in dash_mpds:
1657                 dash_mpds.append(dash_mpd[0])
1658
1659         def add_dash_mpd_pr(pl_response):
1660             dash_mpd = url_or_none(try_get(
1661                 pl_response, lambda x: x['streamingData']['dashManifestUrl'],
1662                 compat_str))
1663             if dash_mpd and dash_mpd not in dash_mpds:
1664                 dash_mpds.append(dash_mpd)
1665
1666         is_live = None
1667         view_count = None
1668
1669         def extract_view_count(v_info):
1670             return int_or_none(try_get(v_info, lambda x: x['view_count'][0]))
1671
1672         def extract_token(v_info):
1673             return dict_get(v_info, ('account_playback_token', 'accountPlaybackToken', 'token'))
1674
1675         player_response = {}
1676
1677         # Get video info
1678         embed_webpage = None
1679         if re.search(r'player-age-gate-content">', video_webpage) is not None:
1680             age_gate = True
1681             # We simulate the access to the video from www.youtube.com/v/{video_id}
1682             # this can be viewed without login into Youtube
1683             url = proto + '://www.youtube.com/embed/%s' % video_id
1684             embed_webpage = self._download_webpage(url, video_id, 'Downloading embed webpage')
1685             data = compat_urllib_parse_urlencode({
1686                 'video_id': video_id,
1687                 'eurl': 'https://youtube.googleapis.com/v/' + video_id,
1688                 'sts': self._search_regex(
1689                     r'"sts"\s*:\s*(\d+)', embed_webpage, 'sts', default=''),
1690             })
1691             video_info_url = proto + '://www.youtube.com/get_video_info?' + data
1692             video_info_webpage = self._download_webpage(
1693                 video_info_url, video_id,
1694                 note='Refetching age-gated info webpage',
1695                 errnote='unable to download video info webpage')
1696             video_info = compat_parse_qs(video_info_webpage)
1697             add_dash_mpd(video_info)
1698         else:
1699             age_gate = False
1700             video_info = None
1701             sts = None
1702             # Try looking directly into the video webpage
1703             ytplayer_config = self._get_ytplayer_config(video_id, video_webpage)
1704             if ytplayer_config:
1705                 args = ytplayer_config['args']
1706                 if args.get('url_encoded_fmt_stream_map') or args.get('hlsvp'):
1707                     # Convert to the same format returned by compat_parse_qs
1708                     video_info = dict((k, [v]) for k, v in args.items())
1709                     add_dash_mpd(video_info)
1710                 # Rental video is not rented but preview is available (e.g.
1711                 # https://www.youtube.com/watch?v=yYr8q0y5Jfg,
1712                 # https://github.com/ytdl-org/youtube-dl/issues/10532)
1713                 if not video_info and args.get('ypc_vid'):
1714                     return self.url_result(
1715                         args['ypc_vid'], YoutubeIE.ie_key(), video_id=args['ypc_vid'])
1716                 if args.get('livestream') == '1' or args.get('live_playback') == 1:
1717                     is_live = True
1718                 sts = ytplayer_config.get('sts')
1719                 if not player_response:
1720                     pl_response = str_or_none(args.get('player_response'))
1721                     if pl_response:
1722                         pl_response = self._parse_json(pl_response, video_id, fatal=False)
1723                         if isinstance(pl_response, dict):
1724                             player_response = pl_response
1725             if not video_info or self._downloader.params.get('youtube_include_dash_manifest', True):
1726                 add_dash_mpd_pr(player_response)
1727                 # We also try looking in get_video_info since it may contain different dashmpd
1728                 # URL that points to a DASH manifest with possibly different itag set (some itags
1729                 # are missing from DASH manifest pointed by webpage's dashmpd, some - from DASH
1730                 # manifest pointed by get_video_info's dashmpd).
1731                 # The general idea is to take a union of itags of both DASH manifests (for example
1732                 # video with such 'manifest behavior' see https://github.com/ytdl-org/youtube-dl/issues/6093)
1733                 self.report_video_info_webpage_download(video_id)
1734                 for el in ('embedded', 'detailpage', 'vevo', ''):
1735                     query = {
1736                         'video_id': video_id,
1737                         'ps': 'default',
1738                         'eurl': '',
1739                         'gl': 'US',
1740                         'hl': 'en',
1741                     }
1742                     if el:
1743                         query['el'] = el
1744                     if sts:
1745                         query['sts'] = sts
1746                     video_info_webpage = self._download_webpage(
1747                         '%s://www.youtube.com/get_video_info' % proto,
1748                         video_id, note=False,
1749                         errnote='unable to download video info webpage',
1750                         fatal=False, query=query)
1751                     if not video_info_webpage:
1752                         continue
1753                     get_video_info = compat_parse_qs(video_info_webpage)
1754                     if not player_response:
1755                         pl_response = get_video_info.get('player_response', [None])[0]
1756                         if isinstance(pl_response, dict):
1757                             player_response = pl_response
1758                             add_dash_mpd_pr(player_response)
1759                     add_dash_mpd(get_video_info)
1760                     if view_count is None:
1761                         view_count = extract_view_count(get_video_info)
1762                     if not video_info:
1763                         video_info = get_video_info
1764                     get_token = extract_token(get_video_info)
1765                     if get_token:
1766                         # Different get_video_info requests may report different results, e.g.
1767                         # some may report video unavailability, but some may serve it without
1768                         # any complaint (see https://github.com/ytdl-org/youtube-dl/issues/7362,
1769                         # the original webpage as well as el=info and el=embedded get_video_info
1770                         # requests report video unavailability due to geo restriction while
1771                         # el=detailpage succeeds and returns valid data). This is probably
1772                         # due to YouTube measures against IP ranges of hosting providers.
1773                         # Working around by preferring the first succeeded video_info containing
1774                         # the token if no such video_info yet was found.
1775                         token = extract_token(video_info)
1776                         if not token:
1777                             video_info = get_video_info
1778                         break
1779
1780         def extract_unavailable_message():
1781             return self._html_search_regex(
1782                 r'(?s)<h1[^>]+id="unavailable-message"[^>]*>(.+?)</h1>',
1783                 video_webpage, 'unavailable message', default=None)
1784
1785         if not video_info:
1786             unavailable_message = extract_unavailable_message()
1787             if not unavailable_message:
1788                 unavailable_message = 'Unable to extract video data'
1789             raise ExtractorError(
1790                 'YouTube said: %s' % unavailable_message, expected=True, video_id=video_id)
1791
1792         if video_info.get('license_info'):
1793             raise ExtractorError('This video is DRM protected.', expected=True)
1794
1795         video_details = try_get(
1796             player_response, lambda x: x['videoDetails'], dict) or {}
1797
1798         # title
1799         if 'title' in video_info:
1800             video_title = video_info['title'][0]
1801         elif 'title' in player_response:
1802             video_title = video_details['title']
1803         else:
1804             self._downloader.report_warning('Unable to extract video title')
1805             video_title = '_'
1806
1807         # description
1808         description_original = video_description = get_element_by_id("eow-description", video_webpage)
1809         if video_description:
1810
1811             def replace_url(m):
1812                 redir_url = compat_urlparse.urljoin(url, m.group(1))
1813                 parsed_redir_url = compat_urllib_parse_urlparse(redir_url)
1814                 if re.search(r'^(?:www\.)?(?:youtube(?:-nocookie)?\.com|youtu\.be)$', parsed_redir_url.netloc) and parsed_redir_url.path == '/redirect':
1815                     qs = compat_parse_qs(parsed_redir_url.query)
1816                     q = qs.get('q')
1817                     if q and q[0]:
1818                         return q[0]
1819                 return redir_url
1820
1821             description_original = video_description = re.sub(r'''(?x)
1822                 <a\s+
1823                     (?:[a-zA-Z-]+="[^"]*"\s+)*?
1824                     (?:title|href)="([^"]+)"\s+
1825                     (?:[a-zA-Z-]+="[^"]*"\s+)*?
1826                     class="[^"]*"[^>]*>
1827                 [^<]+\.{3}\s*
1828                 </a>
1829             ''', replace_url, video_description)
1830             video_description = clean_html(video_description)
1831         else:
1832             fd_mobj = re.search(r'<meta name="description" content="([^"]+)"', video_webpage)
1833             if fd_mobj:
1834                 video_description = unescapeHTML(fd_mobj.group(1))
1835             else:
1836                 video_description = ''
1837
1838         if not smuggled_data.get('force_singlefeed', False):
1839             if not self._downloader.params.get('noplaylist'):
1840                 multifeed_metadata_list = try_get(
1841                     player_response,
1842                     lambda x: x['multicamera']['playerLegacyMulticameraRenderer']['metadataList'],
1843                     compat_str) or try_get(
1844                     video_info, lambda x: x['multifeed_metadata_list'][0], compat_str)
1845                 if multifeed_metadata_list:
1846                     entries = []
1847                     feed_ids = []
1848                     for feed in multifeed_metadata_list.split(','):
1849                         # Unquote should take place before split on comma (,) since textual
1850                         # fields may contain comma as well (see
1851                         # https://github.com/ytdl-org/youtube-dl/issues/8536)
1852                         feed_data = compat_parse_qs(compat_urllib_parse_unquote_plus(feed))
1853                         entries.append({
1854                             '_type': 'url_transparent',
1855                             'ie_key': 'Youtube',
1856                             'url': smuggle_url(
1857                                 '%s://www.youtube.com/watch?v=%s' % (proto, feed_data['id'][0]),
1858                                 {'force_singlefeed': True}),
1859                             'title': '%s (%s)' % (video_title, feed_data['title'][0]),
1860                         })
1861                         feed_ids.append(feed_data['id'][0])
1862                     self.to_screen(
1863                         'Downloading multifeed video (%s) - add --no-playlist to just download video %s'
1864                         % (', '.join(feed_ids), video_id))
1865                     return self.playlist_result(entries, video_id, video_title, video_description)
1866             else:
1867                 self.to_screen('Downloading just video %s because of --no-playlist' % video_id)
1868
1869         if view_count is None:
1870             view_count = extract_view_count(video_info)
1871         if view_count is None and video_details:
1872             view_count = int_or_none(video_details.get('viewCount'))
1873
1874         # Check for "rental" videos
1875         if 'ypc_video_rental_bar_text' in video_info and 'author' not in video_info:
1876             raise ExtractorError('"rental" videos not supported. See https://github.com/ytdl-org/youtube-dl/issues/359 for more information.', expected=True)
1877
1878         def _extract_filesize(media_url):
1879             return int_or_none(self._search_regex(
1880                 r'\bclen[=/](\d+)', media_url, 'filesize', default=None))
1881
1882         if 'conn' in video_info and video_info['conn'][0].startswith('rtmp'):
1883             self.report_rtmp_download()
1884             formats = [{
1885                 'format_id': '_rtmp',
1886                 'protocol': 'rtmp',
1887                 'url': video_info['conn'][0],
1888                 'player_url': player_url,
1889             }]
1890         elif not is_live and (len(video_info.get('url_encoded_fmt_stream_map', [''])[0]) >= 1 or len(video_info.get('adaptive_fmts', [''])[0]) >= 1):
1891             encoded_url_map = video_info.get('url_encoded_fmt_stream_map', [''])[0] + ',' + video_info.get('adaptive_fmts', [''])[0]
1892             if 'rtmpe%3Dyes' in encoded_url_map:
1893                 raise ExtractorError('rtmpe downloads are not supported, see https://github.com/ytdl-org/youtube-dl/issues/343 for more information.', expected=True)
1894             formats_spec = {}
1895             fmt_list = video_info.get('fmt_list', [''])[0]
1896             if fmt_list:
1897                 for fmt in fmt_list.split(','):
1898                     spec = fmt.split('/')
1899                     if len(spec) > 1:
1900                         width_height = spec[1].split('x')
1901                         if len(width_height) == 2:
1902                             formats_spec[spec[0]] = {
1903                                 'resolution': spec[1],
1904                                 'width': int_or_none(width_height[0]),
1905                                 'height': int_or_none(width_height[1]),
1906                             }
1907             q = qualities(['small', 'medium', 'hd720'])
1908             streaming_formats = try_get(player_response, lambda x: x['streamingData']['formats'], list)
1909             if streaming_formats:
1910                 for fmt in streaming_formats:
1911                     itag = str_or_none(fmt.get('itag'))
1912                     if not itag:
1913                         continue
1914                     quality = fmt.get('quality')
1915                     quality_label = fmt.get('qualityLabel') or quality
1916                     formats_spec[itag] = {
1917                         'asr': int_or_none(fmt.get('audioSampleRate')),
1918                         'filesize': int_or_none(fmt.get('contentLength')),
1919                         'format_note': quality_label,
1920                         'fps': int_or_none(fmt.get('fps')),
1921                         'height': int_or_none(fmt.get('height')),
1922                         'quality': q(quality),
1923                         # bitrate for itag 43 is always 2147483647
1924                         'tbr': float_or_none(fmt.get('averageBitrate') or fmt.get('bitrate'), 1000) if itag != '43' else None,
1925                         'width': int_or_none(fmt.get('width')),
1926                     }
1927             formats = []
1928             for url_data_str in encoded_url_map.split(','):
1929                 url_data = compat_parse_qs(url_data_str)
1930                 if 'itag' not in url_data or 'url' not in url_data:
1931                     continue
1932                 stream_type = int_or_none(try_get(url_data, lambda x: x['stream_type'][0]))
1933                 # Unsupported FORMAT_STREAM_TYPE_OTF
1934                 if stream_type == 3:
1935                     continue
1936                 format_id = url_data['itag'][0]
1937                 url = url_data['url'][0]
1938
1939                 if 's' in url_data or self._downloader.params.get('youtube_include_dash_manifest', True):
1940                     ASSETS_RE = r'"assets":.+?"js":\s*("[^"]+")'
1941                     jsplayer_url_json = self._search_regex(
1942                         ASSETS_RE,
1943                         embed_webpage if age_gate else video_webpage,
1944                         'JS player URL (1)', default=None)
1945                     if not jsplayer_url_json and not age_gate:
1946                         # We need the embed website after all
1947                         if embed_webpage is None:
1948                             embed_url = proto + '://www.youtube.com/embed/%s' % video_id
1949                             embed_webpage = self._download_webpage(
1950                                 embed_url, video_id, 'Downloading embed webpage')
1951                         jsplayer_url_json = self._search_regex(
1952                             ASSETS_RE, embed_webpage, 'JS player URL')
1953
1954                     player_url = json.loads(jsplayer_url_json)
1955                     if player_url is None:
1956                         player_url_json = self._search_regex(
1957                             r'ytplayer\.config.*?"url"\s*:\s*("[^"]+")',
1958                             video_webpage, 'age gate player URL')
1959                         player_url = json.loads(player_url_json)
1960
1961                 if 'sig' in url_data:
1962                     url += '&signature=' + url_data['sig'][0]
1963                 elif 's' in url_data:
1964                     encrypted_sig = url_data['s'][0]
1965
1966                     if self._downloader.params.get('verbose'):
1967                         if player_url is None:
1968                             player_version = 'unknown'
1969                             player_desc = 'unknown'
1970                         else:
1971                             if player_url.endswith('swf'):
1972                                 player_version = self._search_regex(
1973                                     r'-(.+?)(?:/watch_as3)?\.swf$', player_url,
1974                                     'flash player', fatal=False)
1975                                 player_desc = 'flash player %s' % player_version
1976                             else:
1977                                 player_version = self._search_regex(
1978                                     [r'html5player-([^/]+?)(?:/html5player(?:-new)?)?\.js',
1979                                      r'(?:www|player(?:_ias)?)-([^/]+)(?:/[a-z]{2,3}_[A-Z]{2})?/base\.js'],
1980                                     player_url,
1981                                     'html5 player', fatal=False)
1982                                 player_desc = 'html5 player %s' % player_version
1983
1984                         parts_sizes = self._signature_cache_id(encrypted_sig)
1985                         self.to_screen('{%s} signature length %s, %s' %
1986                                        (format_id, parts_sizes, player_desc))
1987
1988                     signature = self._decrypt_signature(
1989                         encrypted_sig, video_id, player_url, age_gate)
1990                     sp = try_get(url_data, lambda x: x['sp'][0], compat_str) or 'signature'
1991                     url += '&%s=%s' % (sp, signature)
1992                 if 'ratebypass' not in url:
1993                     url += '&ratebypass=yes'
1994
1995                 dct = {
1996                     'format_id': format_id,
1997                     'url': url,
1998                     'player_url': player_url,
1999                 }
2000                 if format_id in self._formats:
2001                     dct.update(self._formats[format_id])
2002                 if format_id in formats_spec:
2003                     dct.update(formats_spec[format_id])
2004
2005                 # Some itags are not included in DASH manifest thus corresponding formats will
2006                 # lack metadata (see https://github.com/ytdl-org/youtube-dl/pull/5993).
2007                 # Trying to extract metadata from url_encoded_fmt_stream_map entry.
2008                 mobj = re.search(r'^(?P<width>\d+)[xX](?P<height>\d+)$', url_data.get('size', [''])[0])
2009                 width, height = (int(mobj.group('width')), int(mobj.group('height'))) if mobj else (None, None)
2010
2011                 filesize = int_or_none(url_data.get(
2012                     'clen', [None])[0]) or _extract_filesize(url)
2013
2014                 quality = url_data.get('quality', [None])[0]
2015
2016                 more_fields = {
2017                     'filesize': filesize,
2018                     'tbr': float_or_none(url_data.get('bitrate', [None])[0], 1000),
2019                     'width': width,
2020                     'height': height,
2021                     'fps': int_or_none(url_data.get('fps', [None])[0]),
2022                     'format_note': url_data.get('quality_label', [None])[0] or quality,
2023                     'quality': q(quality),
2024                 }
2025                 for key, value in more_fields.items():
2026                     if value:
2027                         dct[key] = value
2028                 type_ = url_data.get('type', [None])[0]
2029                 if type_:
2030                     type_split = type_.split(';')
2031                     kind_ext = type_split[0].split('/')
2032                     if len(kind_ext) == 2:
2033                         kind, _ = kind_ext
2034                         dct['ext'] = mimetype2ext(type_split[0])
2035                         if kind in ('audio', 'video'):
2036                             codecs = None
2037                             for mobj in re.finditer(
2038                                     r'(?P<key>[a-zA-Z_-]+)=(?P<quote>["\']?)(?P<val>.+?)(?P=quote)(?:;|$)', type_):
2039                                 if mobj.group('key') == 'codecs':
2040                                     codecs = mobj.group('val')
2041                                     break
2042                             if codecs:
2043                                 dct.update(parse_codecs(codecs))
2044                 if dct.get('acodec') == 'none' or dct.get('vcodec') == 'none':
2045                     dct['downloader_options'] = {
2046                         # Youtube throttles chunks >~10M
2047                         'http_chunk_size': 10485760,
2048                     }
2049                 formats.append(dct)
2050         else:
2051             manifest_url = (
2052                 url_or_none(try_get(
2053                     player_response,
2054                     lambda x: x['streamingData']['hlsManifestUrl'],
2055                     compat_str))
2056                 or url_or_none(try_get(
2057                     video_info, lambda x: x['hlsvp'][0], compat_str)))
2058             if manifest_url:
2059                 formats = []
2060                 m3u8_formats = self._extract_m3u8_formats(
2061                     manifest_url, video_id, 'mp4', fatal=False)
2062                 for a_format in m3u8_formats:
2063                     itag = self._search_regex(
2064                         r'/itag/(\d+)/', a_format['url'], 'itag', default=None)
2065                     if itag:
2066                         a_format['format_id'] = itag
2067                         if itag in self._formats:
2068                             dct = self._formats[itag].copy()
2069                             dct.update(a_format)
2070                             a_format = dct
2071                     a_format['player_url'] = player_url
2072                     # Accept-Encoding header causes failures in live streams on Youtube and Youtube Gaming
2073                     a_format.setdefault('http_headers', {})['Youtubedl-no-compression'] = 'True'
2074                     formats.append(a_format)
2075             else:
2076                 error_message = clean_html(video_info.get('reason', [None])[0])
2077                 if not error_message:
2078                     error_message = extract_unavailable_message()
2079                 if error_message:
2080                     raise ExtractorError(error_message, expected=True)
2081                 raise ExtractorError('no conn, hlsvp, hlsManifestUrl or url_encoded_fmt_stream_map information found in video info')
2082
2083         # uploader
2084         video_uploader = try_get(
2085             video_info, lambda x: x['author'][0],
2086             compat_str) or str_or_none(video_details.get('author'))
2087         if video_uploader:
2088             video_uploader = compat_urllib_parse_unquote_plus(video_uploader)
2089         else:
2090             self._downloader.report_warning('unable to extract uploader name')
2091
2092         # uploader_id
2093         video_uploader_id = None
2094         video_uploader_url = None
2095         mobj = re.search(
2096             r'<link itemprop="url" href="(?P<uploader_url>https?://www\.youtube\.com/(?:user|channel)/(?P<uploader_id>[^"]+))">',
2097             video_webpage)
2098         if mobj is not None:
2099             video_uploader_id = mobj.group('uploader_id')
2100             video_uploader_url = mobj.group('uploader_url')
2101         else:
2102             self._downloader.report_warning('unable to extract uploader nickname')
2103
2104         channel_id = (
2105             str_or_none(video_details.get('channelId'))
2106             or self._html_search_meta(
2107                 'channelId', video_webpage, 'channel id', default=None)
2108             or self._search_regex(
2109                 r'data-channel-external-id=(["\'])(?P<id>(?:(?!\1).)+)\1',
2110                 video_webpage, 'channel id', default=None, group='id'))
2111         channel_url = 'http://www.youtube.com/channel/%s' % channel_id if channel_id else None
2112
2113         # thumbnail image
2114         # We try first to get a high quality image:
2115         m_thumb = re.search(r'<span itemprop="thumbnail".*?href="(.*?)">',
2116                             video_webpage, re.DOTALL)
2117         if m_thumb is not None:
2118             video_thumbnail = m_thumb.group(1)
2119         elif 'thumbnail_url' not in video_info:
2120             self._downloader.report_warning('unable to extract video thumbnail')
2121             video_thumbnail = None
2122         else:   # don't panic if we can't find it
2123             video_thumbnail = compat_urllib_parse_unquote_plus(video_info['thumbnail_url'][0])
2124
2125         # upload date
2126         upload_date = self._html_search_meta(
2127             'datePublished', video_webpage, 'upload date', default=None)
2128         if not upload_date:
2129             upload_date = self._search_regex(
2130                 [r'(?s)id="eow-date.*?>(.*?)</span>',
2131                  r'(?:id="watch-uploader-info".*?>.*?|["\']simpleText["\']\s*:\s*["\'])(?:Published|Uploaded|Streamed live|Started) on (.+?)[<"\']'],
2132                 video_webpage, 'upload date', default=None)
2133         upload_date = unified_strdate(upload_date)
2134
2135         video_license = self._html_search_regex(
2136             r'<h4[^>]+class="title"[^>]*>\s*License\s*</h4>\s*<ul[^>]*>\s*<li>(.+?)</li',
2137             video_webpage, 'license', default=None)
2138
2139         m_music = re.search(
2140             r'''(?x)
2141                 <h4[^>]+class="title"[^>]*>\s*Music\s*</h4>\s*
2142                 <ul[^>]*>\s*
2143                 <li>(?P<title>.+?)
2144                 by (?P<creator>.+?)
2145                 (?:
2146                     \(.+?\)|
2147                     <a[^>]*
2148                         (?:
2149                             \bhref=["\']/red[^>]*>|             # drop possible
2150                             >\s*Listen ad-free with YouTube Red # YouTube Red ad
2151                         )
2152                     .*?
2153                 )?</li
2154             ''',
2155             video_webpage)
2156         if m_music:
2157             video_alt_title = remove_quotes(unescapeHTML(m_music.group('title')))
2158             video_creator = clean_html(m_music.group('creator'))
2159         else:
2160             video_alt_title = video_creator = None
2161
2162         def extract_meta(field):
2163             return self._html_search_regex(
2164                 r'<h4[^>]+class="title"[^>]*>\s*%s\s*</h4>\s*<ul[^>]*>\s*<li>(.+?)</li>\s*' % field,
2165                 video_webpage, field, default=None)
2166
2167         track = extract_meta('Song')
2168         artist = extract_meta('Artist')
2169         album = extract_meta('Album')
2170
2171         # Youtube Music Auto-generated description
2172         release_date = release_year = None
2173         if video_description:
2174             mobj = re.search(r'(?s)Provided to YouTube by [^\n]+\n+(?P<track>[^·]+)·(?P<artist>[^\n]+)\n+(?P<album>[^\n]+)(?:.+?℗\s*(?P<release_year>\d{4})(?!\d))?(?:.+?Released on\s*:\s*(?P<release_date>\d{4}-\d{2}-\d{2}))?(.+?\nArtist\s*:\s*(?P<clean_artist>[^\n]+))?', video_description)
2175             if mobj:
2176                 if not track:
2177                     track = mobj.group('track').strip()
2178                 if not artist:
2179                     artist = mobj.group('clean_artist') or ', '.join(a.strip() for a in mobj.group('artist').split('·'))
2180                 if not album:
2181                     album = mobj.group('album'.strip())
2182                 release_year = mobj.group('release_year')
2183                 release_date = mobj.group('release_date')
2184                 if release_date:
2185                     release_date = release_date.replace('-', '')
2186                     if not release_year:
2187                         release_year = int(release_date[:4])
2188                 if release_year:
2189                     release_year = int(release_year)
2190
2191         m_episode = re.search(
2192             r'<div[^>]+id="watch7-headline"[^>]*>\s*<span[^>]*>.*?>(?P<series>[^<]+)</a></b>\s*S(?P<season>\d+)\s*•\s*E(?P<episode>\d+)</span>',
2193             video_webpage)
2194         if m_episode:
2195             series = unescapeHTML(m_episode.group('series'))
2196             season_number = int(m_episode.group('season'))
2197             episode_number = int(m_episode.group('episode'))
2198         else:
2199             series = season_number = episode_number = None
2200
2201         m_cat_container = self._search_regex(
2202             r'(?s)<h4[^>]*>\s*Category\s*</h4>\s*<ul[^>]*>(.*?)</ul>',
2203             video_webpage, 'categories', default=None)
2204         if m_cat_container:
2205             category = self._html_search_regex(
2206                 r'(?s)<a[^<]+>(.*?)</a>', m_cat_container, 'category',
2207                 default=None)
2208             video_categories = None if category is None else [category]
2209         else:
2210             video_categories = None
2211
2212         video_tags = [
2213             unescapeHTML(m.group('content'))
2214             for m in re.finditer(self._meta_regex('og:video:tag'), video_webpage)]
2215
2216         def _extract_count(count_name):
2217             return str_to_int(self._search_regex(
2218                 r'-%s-button[^>]+><span[^>]+class="yt-uix-button-content"[^>]*>([\d,]+)</span>'
2219                 % re.escape(count_name),
2220                 video_webpage, count_name, default=None))
2221
2222         like_count = _extract_count('like')
2223         dislike_count = _extract_count('dislike')
2224
2225         if view_count is None:
2226             view_count = str_to_int(self._search_regex(
2227                 r'<[^>]+class=["\']watch-view-count[^>]+>\s*([\d,\s]+)', video_webpage,
2228                 'view count', default=None))
2229
2230         # subtitles
2231         video_subtitles = self.extract_subtitles(video_id, video_webpage)
2232         automatic_captions = self.extract_automatic_captions(video_id, video_webpage)
2233
2234         video_duration = try_get(
2235             video_info, lambda x: int_or_none(x['length_seconds'][0]))
2236         if not video_duration:
2237             video_duration = int_or_none(video_details.get('lengthSeconds'))
2238         if not video_duration:
2239             video_duration = parse_duration(self._html_search_meta(
2240                 'duration', video_webpage, 'video duration'))
2241
2242         # annotations
2243         video_annotations = None
2244         if self._downloader.params.get('writeannotations', False):
2245             video_annotations = self._extract_annotations(video_id)
2246
2247         chapters = self._extract_chapters(description_original, video_duration)
2248
2249         # Look for the DASH manifest
2250         if self._downloader.params.get('youtube_include_dash_manifest', True):
2251             dash_mpd_fatal = True
2252             for mpd_url in dash_mpds:
2253                 dash_formats = {}
2254                 try:
2255                     def decrypt_sig(mobj):
2256                         s = mobj.group(1)
2257                         dec_s = self._decrypt_signature(s, video_id, player_url, age_gate)
2258                         return '/signature/%s' % dec_s
2259
2260                     mpd_url = re.sub(r'/s/([a-fA-F0-9\.]+)', decrypt_sig, mpd_url)
2261
2262                     for df in self._extract_mpd_formats(
2263                             mpd_url, video_id, fatal=dash_mpd_fatal,
2264                             formats_dict=self._formats):
2265                         if not df.get('filesize'):
2266                             df['filesize'] = _extract_filesize(df['url'])
2267                         # Do not overwrite DASH format found in some previous DASH manifest
2268                         if df['format_id'] not in dash_formats:
2269                             dash_formats[df['format_id']] = df
2270                         # Additional DASH manifests may end up in HTTP Error 403 therefore
2271                         # allow them to fail without bug report message if we already have
2272                         # some DASH manifest succeeded. This is temporary workaround to reduce
2273                         # burst of bug reports until we figure out the reason and whether it
2274                         # can be fixed at all.
2275                         dash_mpd_fatal = False
2276                 except (ExtractorError, KeyError) as e:
2277                     self.report_warning(
2278                         'Skipping DASH manifest: %r' % e, video_id)
2279                 if dash_formats:
2280                     # Remove the formats we found through non-DASH, they
2281                     # contain less info and it can be wrong, because we use
2282                     # fixed values (for example the resolution). See
2283                     # https://github.com/ytdl-org/youtube-dl/issues/5774 for an
2284                     # example.
2285                     formats = [f for f in formats if f['format_id'] not in dash_formats.keys()]
2286                     formats.extend(dash_formats.values())
2287
2288         # Check for malformed aspect ratio
2289         stretched_m = re.search(
2290             r'<meta\s+property="og:video:tag".*?content="yt:stretch=(?P<w>[0-9]+):(?P<h>[0-9]+)">',
2291             video_webpage)
2292         if stretched_m:
2293             w = float(stretched_m.group('w'))
2294             h = float(stretched_m.group('h'))
2295             # yt:stretch may hold invalid ratio data (e.g. for Q39EVAstoRM ratio is 17:0).
2296             # We will only process correct ratios.
2297             if w > 0 and h > 0:
2298                 ratio = w / h
2299                 for f in formats:
2300                     if f.get('vcodec') != 'none':
2301                         f['stretched_ratio'] = ratio
2302
2303         if not formats:
2304             token = extract_token(video_info)
2305             if not token:
2306                 if 'reason' in video_info:
2307                     if 'The uploader has not made this video available in your country.' in video_info['reason']:
2308                         regions_allowed = self._html_search_meta(
2309                             'regionsAllowed', video_webpage, default=None)
2310                         countries = regions_allowed.split(',') if regions_allowed else None
2311                         self.raise_geo_restricted(
2312                             msg=video_info['reason'][0], countries=countries)
2313                     reason = video_info['reason'][0]
2314                     if 'Invalid parameters' in reason:
2315                         unavailable_message = extract_unavailable_message()
2316                         if unavailable_message:
2317                             reason = unavailable_message
2318                     raise ExtractorError(
2319                         'YouTube said: %s' % reason,
2320                         expected=True, video_id=video_id)
2321                 else:
2322                     raise ExtractorError(
2323                         '"token" parameter not in video info for unknown reason',
2324                         video_id=video_id)
2325
2326         self._sort_formats(formats)
2327
2328         self.mark_watched(video_id, video_info, player_response)
2329
2330         return {
2331             'id': video_id,
2332             'uploader': video_uploader,
2333             'uploader_id': video_uploader_id,
2334             'uploader_url': video_uploader_url,
2335             'channel_id': channel_id,
2336             'channel_url': channel_url,
2337             'upload_date': upload_date,
2338             'license': video_license,
2339             'creator': video_creator or artist,
2340             'title': video_title,
2341             'alt_title': video_alt_title or track,
2342             'thumbnail': video_thumbnail,
2343             'description': video_description,
2344             'categories': video_categories,
2345             'tags': video_tags,
2346             'subtitles': video_subtitles,
2347             'automatic_captions': automatic_captions,
2348             'duration': video_duration,
2349             'age_limit': 18 if age_gate else 0,
2350             'annotations': video_annotations,
2351             'chapters': chapters,
2352             'webpage_url': proto + '://www.youtube.com/watch?v=%s' % video_id,
2353             'view_count': view_count,
2354             'like_count': like_count,
2355             'dislike_count': dislike_count,
2356             'average_rating': float_or_none(video_info.get('avg_rating', [None])[0]),
2357             'formats': formats,
2358             'is_live': is_live,
2359             'start_time': start_time,
2360             'end_time': end_time,
2361             'series': series,
2362             'season_number': season_number,
2363             'episode_number': episode_number,
2364             'track': track,
2365             'artist': artist,
2366             'album': album,
2367             'release_date': release_date,
2368             'release_year': release_year,
2369         }
2370
2371
2372 class YoutubePlaylistIE(YoutubePlaylistBaseInfoExtractor):
2373     IE_DESC = 'YouTube.com playlists'
2374     _VALID_URL = r"""(?x)(?:
2375                         (?:https?://)?
2376                         (?:\w+\.)?
2377                         (?:
2378                             (?:
2379                                 youtube\.com|
2380                                 invidio\.us
2381                             )
2382                             /
2383                             (?:
2384                                (?:course|view_play_list|my_playlists|artist|playlist|watch|embed/(?:videoseries|[0-9A-Za-z_-]{11}))
2385                                \? (?:.*?[&;])*? (?:p|a|list)=
2386                             |  p/
2387                             )|
2388                             youtu\.be/[0-9A-Za-z_-]{11}\?.*?\blist=
2389                         )
2390                         (
2391                             (?:PL|LL|EC|UU|FL|RD|UL|TL|OLAK5uy_)?[0-9A-Za-z-_]{10,}
2392                             # Top tracks, they can also include dots
2393                             |(?:MC)[\w\.]*
2394                         )
2395                         .*
2396                      |
2397                         (%(playlist_id)s)
2398                      )""" % {'playlist_id': YoutubeBaseInfoExtractor._PLAYLIST_ID_RE}
2399     _TEMPLATE_URL = 'https://www.youtube.com/playlist?list=%s'
2400     _VIDEO_RE = r'href="\s*/watch\?v=(?P<id>[0-9A-Za-z_-]{11})&amp;[^"]*?index=(?P<index>\d+)(?:[^>]+>(?P<title>[^<]+))?'
2401     IE_NAME = 'youtube:playlist'
2402     _TESTS = [{
2403         'url': 'https://www.youtube.com/playlist?list=PLwiyx1dc3P2JR9N8gQaQN_BCvlSlap7re',
2404         'info_dict': {
2405             'title': 'ytdl test PL',
2406             'id': 'PLwiyx1dc3P2JR9N8gQaQN_BCvlSlap7re',
2407         },
2408         'playlist_count': 3,
2409     }, {
2410         'url': 'https://www.youtube.com/playlist?list=PLtPgu7CB4gbZDA7i_euNxn75ISqxwZPYx',
2411         'info_dict': {
2412             'id': 'PLtPgu7CB4gbZDA7i_euNxn75ISqxwZPYx',
2413             'title': 'YDL_Empty_List',
2414         },
2415         'playlist_count': 0,
2416         'skip': 'This playlist is private',
2417     }, {
2418         'note': 'Playlist with deleted videos (#651). As a bonus, the video #51 is also twice in this list.',
2419         'url': 'https://www.youtube.com/playlist?list=PLwP_SiAcdui0KVebT0mU9Apz359a4ubsC',
2420         'info_dict': {
2421             'title': '29C3: Not my department',
2422             'id': 'PLwP_SiAcdui0KVebT0mU9Apz359a4ubsC',
2423         },
2424         'playlist_count': 95,
2425     }, {
2426         'note': 'issue #673',
2427         'url': 'PLBB231211A4F62143',
2428         'info_dict': {
2429             'title': '[OLD]Team Fortress 2 (Class-based LP)',
2430             'id': 'PLBB231211A4F62143',
2431         },
2432         'playlist_mincount': 26,
2433     }, {
2434         'note': 'Large playlist',
2435         'url': 'https://www.youtube.com/playlist?list=UUBABnxM4Ar9ten8Mdjj1j0Q',
2436         'info_dict': {
2437             'title': 'Uploads from Cauchemar',
2438             'id': 'UUBABnxM4Ar9ten8Mdjj1j0Q',
2439         },
2440         'playlist_mincount': 799,
2441     }, {
2442         'url': 'PLtPgu7CB4gbY9oDN3drwC3cMbJggS7dKl',
2443         'info_dict': {
2444             'title': 'YDL_safe_search',
2445             'id': 'PLtPgu7CB4gbY9oDN3drwC3cMbJggS7dKl',
2446         },
2447         'playlist_count': 2,
2448         'skip': 'This playlist is private',
2449     }, {
2450         'note': 'embedded',
2451         'url': 'https://www.youtube.com/embed/videoseries?list=PL6IaIsEjSbf96XFRuNccS_RuEXwNdsoEu',
2452         'playlist_count': 4,
2453         'info_dict': {
2454             'title': 'JODA15',
2455             'id': 'PL6IaIsEjSbf96XFRuNccS_RuEXwNdsoEu',
2456         }
2457     }, {
2458         'url': 'http://www.youtube.com/embed/_xDOZElKyNU?list=PLsyOSbh5bs16vubvKePAQ1x3PhKavfBIl',
2459         'playlist_mincount': 485,
2460         'info_dict': {
2461             'title': '2017 華語最新單曲 (2/24更新)',
2462             'id': 'PLsyOSbh5bs16vubvKePAQ1x3PhKavfBIl',
2463         }
2464     }, {
2465         'note': 'Embedded SWF player',
2466         'url': 'https://www.youtube.com/p/YN5VISEtHet5D4NEvfTd0zcgFk84NqFZ?hl=en_US&fs=1&rel=0',
2467         'playlist_count': 4,
2468         'info_dict': {
2469             'title': 'JODA7',
2470             'id': 'YN5VISEtHet5D4NEvfTd0zcgFk84NqFZ',
2471         }
2472     }, {
2473         'note': 'Buggy playlist: the webpage has a "Load more" button but it doesn\'t have more videos',
2474         'url': 'https://www.youtube.com/playlist?list=UUXw-G3eDE9trcvY2sBMM_aA',
2475         'info_dict': {
2476             'title': 'Uploads from Interstellar Movie',
2477             'id': 'UUXw-G3eDE9trcvY2sBMM_aA',
2478         },
2479         'playlist_mincount': 21,
2480     }, {
2481         # Playlist URL that does not actually serve a playlist
2482         'url': 'https://www.youtube.com/watch?v=FqZTN594JQw&list=PLMYEtVRpaqY00V9W81Cwmzp6N6vZqfUKD4',
2483         'info_dict': {
2484             'id': 'FqZTN594JQw',
2485             'ext': 'webm',
2486             'title': "Smiley's People 01 detective, Adventure Series, Action",
2487             'uploader': 'STREEM',
2488             'uploader_id': 'UCyPhqAZgwYWZfxElWVbVJng',
2489             'uploader_url': r're:https?://(?:www\.)?youtube\.com/channel/UCyPhqAZgwYWZfxElWVbVJng',
2490             'upload_date': '20150526',
2491             'license': 'Standard YouTube License',
2492             'description': 'md5:507cdcb5a49ac0da37a920ece610be80',
2493             'categories': ['People & Blogs'],
2494             'tags': list,
2495             'view_count': int,
2496             'like_count': int,
2497             'dislike_count': int,
2498         },
2499         'params': {
2500             'skip_download': True,
2501         },
2502         'add_ie': [YoutubeIE.ie_key()],
2503     }, {
2504         'url': 'https://youtu.be/yeWKywCrFtk?list=PL2qgrgXsNUG5ig9cat4ohreBjYLAPC0J5',
2505         'info_dict': {
2506             'id': 'yeWKywCrFtk',
2507             'ext': 'mp4',
2508             'title': 'Small Scale Baler and Braiding Rugs',
2509             'uploader': 'Backus-Page House Museum',
2510             'uploader_id': 'backuspagemuseum',
2511             'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/backuspagemuseum',
2512             'upload_date': '20161008',
2513             'license': 'Standard YouTube License',
2514             'description': 'md5:800c0c78d5eb128500bffd4f0b4f2e8a',
2515             'categories': ['Nonprofits & Activism'],
2516             'tags': list,
2517             'like_count': int,
2518             'dislike_count': int,
2519         },
2520         'params': {
2521             'noplaylist': True,
2522             'skip_download': True,
2523         },
2524     }, {
2525         'url': 'https://youtu.be/uWyaPkt-VOI?list=PL9D9FC436B881BA21',
2526         'only_matching': True,
2527     }, {
2528         'url': 'TLGGrESM50VT6acwMjAyMjAxNw',
2529         'only_matching': True,
2530     }, {
2531         # music album playlist
2532         'url': 'OLAK5uy_m4xAFdmMC5rX3Ji3g93pQe3hqLZw_9LhM',
2533         'only_matching': True,
2534     }, {
2535         'url': 'https://invidio.us/playlist?list=PLDIoUOhQQPlXr63I_vwF9GD8sAKh77dWU',
2536         'only_matching': True,
2537     }]
2538
2539     def _real_initialize(self):
2540         self._login()
2541
2542     def _extract_mix(self, playlist_id):
2543         # The mixes are generated from a single video
2544         # the id of the playlist is just 'RD' + video_id
2545         ids = []
2546         last_id = playlist_id[-11:]
2547         for n in itertools.count(1):
2548             url = 'https://youtube.com/watch?v=%s&list=%s' % (last_id, playlist_id)
2549             webpage = self._download_webpage(
2550                 url, playlist_id, 'Downloading page {0} of Youtube mix'.format(n))
2551             new_ids = orderedSet(re.findall(
2552                 r'''(?xs)data-video-username=".*?".*?
2553                            href="/watch\?v=([0-9A-Za-z_-]{11})&amp;[^"]*?list=%s''' % re.escape(playlist_id),
2554                 webpage))
2555             # Fetch new pages until all the videos are repeated, it seems that
2556             # there are always 51 unique videos.
2557             new_ids = [_id for _id in new_ids if _id not in ids]
2558             if not new_ids:
2559                 break
2560             ids.extend(new_ids)
2561             last_id = ids[-1]
2562
2563         url_results = self._ids_to_results(ids)
2564
2565         search_title = lambda class_name: get_element_by_attribute('class', class_name, webpage)
2566         title_span = (
2567             search_title('playlist-title')
2568             or search_title('title long-title')
2569             or search_title('title'))
2570         title = clean_html(title_span)
2571
2572         return self.playlist_result(url_results, playlist_id, title)
2573
2574     def _extract_playlist(self, playlist_id):
2575         url = self._TEMPLATE_URL % playlist_id
2576         page = self._download_webpage(url, playlist_id)
2577
2578         # the yt-alert-message now has tabindex attribute (see https://github.com/ytdl-org/youtube-dl/issues/11604)
2579         for match in re.findall(r'<div class="yt-alert-message"[^>]*>([^<]+)</div>', page):
2580             match = match.strip()
2581             # Check if the playlist exists or is private
2582             mobj = re.match(r'[^<]*(?:The|This) playlist (?P<reason>does not exist|is private)[^<]*', match)
2583             if mobj:
2584                 reason = mobj.group('reason')
2585                 message = 'This playlist %s' % reason
2586                 if 'private' in reason:
2587                     message += ', use --username or --netrc to access it'
2588                 message += '.'
2589                 raise ExtractorError(message, expected=True)
2590             elif re.match(r'[^<]*Invalid parameters[^<]*', match):
2591                 raise ExtractorError(
2592                     'Invalid parameters. Maybe URL is incorrect.',
2593                     expected=True)
2594             elif re.match(r'[^<]*Choose your language[^<]*', match):
2595                 continue
2596             else:
2597                 self.report_warning('Youtube gives an alert message: ' + match)
2598
2599         playlist_title = self._html_search_regex(
2600             r'(?s)<h1 class="pl-header-title[^"]*"[^>]*>\s*(.*?)\s*</h1>',
2601             page, 'title', default=None)
2602
2603         _UPLOADER_BASE = r'class=["\']pl-header-details[^>]+>\s*<li>\s*<a[^>]+\bhref='
2604         uploader = self._search_regex(
2605             r'%s["\']/(?:user|channel)/[^>]+>([^<]+)' % _UPLOADER_BASE,
2606             page, 'uploader', default=None)
2607         mobj = re.search(
2608             r'%s(["\'])(?P<path>/(?:user|channel)/(?P<uploader_id>.+?))\1' % _UPLOADER_BASE,
2609             page)
2610         if mobj:
2611             uploader_id = mobj.group('uploader_id')
2612             uploader_url = compat_urlparse.urljoin(url, mobj.group('path'))
2613         else:
2614             uploader_id = uploader_url = None
2615
2616         has_videos = True
2617
2618         if not playlist_title:
2619             try:
2620                 # Some playlist URLs don't actually serve a playlist (e.g.
2621                 # https://www.youtube.com/watch?v=FqZTN594JQw&list=PLMYEtVRpaqY00V9W81Cwmzp6N6vZqfUKD4)
2622                 next(self._entries(page, playlist_id))
2623             except StopIteration:
2624                 has_videos = False
2625
2626         playlist = self.playlist_result(
2627             self._entries(page, playlist_id), playlist_id, playlist_title)
2628         playlist.update({
2629             'uploader': uploader,
2630             'uploader_id': uploader_id,
2631             'uploader_url': uploader_url,
2632         })
2633
2634         return has_videos, playlist
2635
2636     def _check_download_just_video(self, url, playlist_id):
2637         # Check if it's a video-specific URL
2638         query_dict = compat_urlparse.parse_qs(compat_urlparse.urlparse(url).query)
2639         video_id = query_dict.get('v', [None])[0] or self._search_regex(
2640             r'(?:(?:^|//)youtu\.be/|youtube\.com/embed/(?!videoseries))([0-9A-Za-z_-]{11})', url,
2641             'video id', default=None)
2642         if video_id:
2643             if self._downloader.params.get('noplaylist'):
2644                 self.to_screen('Downloading just video %s because of --no-playlist' % video_id)
2645                 return video_id, self.url_result(video_id, 'Youtube', video_id=video_id)
2646             else:
2647                 self.to_screen('Downloading playlist %s - add --no-playlist to just download video %s' % (playlist_id, video_id))
2648                 return video_id, None
2649         return None, None
2650
2651     def _real_extract(self, url):
2652         # Extract playlist id
2653         mobj = re.match(self._VALID_URL, url)
2654         if mobj is None:
2655             raise ExtractorError('Invalid URL: %s' % url)
2656         playlist_id = mobj.group(1) or mobj.group(2)
2657
2658         video_id, video = self._check_download_just_video(url, playlist_id)
2659         if video:
2660             return video
2661
2662         if playlist_id.startswith(('RD', 'UL', 'PU')):
2663             # Mixes require a custom extraction process
2664             return self._extract_mix(playlist_id)
2665
2666         has_videos, playlist = self._extract_playlist(playlist_id)
2667         if has_videos or not video_id:
2668             return playlist
2669
2670         # Some playlist URLs don't actually serve a playlist (see
2671         # https://github.com/ytdl-org/youtube-dl/issues/10537).
2672         # Fallback to plain video extraction if there is a video id
2673         # along with playlist id.
2674         return self.url_result(video_id, 'Youtube', video_id=video_id)
2675
2676
2677 class YoutubeChannelIE(YoutubePlaylistBaseInfoExtractor):
2678     IE_DESC = 'YouTube.com channels'
2679     _VALID_URL = r'https?://(?:youtu\.be|(?:\w+\.)?youtube(?:-nocookie)?\.com|(?:www\.)?invidio\.us)/channel/(?P<id>[0-9A-Za-z_-]+)'
2680     _TEMPLATE_URL = 'https://www.youtube.com/channel/%s/videos'
2681     _VIDEO_RE = r'(?:title="(?P<title>[^"]+)"[^>]+)?href="/watch\?v=(?P<id>[0-9A-Za-z_-]+)&?'
2682     IE_NAME = 'youtube:channel'
2683     _TESTS = [{
2684         'note': 'paginated channel',
2685         'url': 'https://www.youtube.com/channel/UCKfVa3S1e4PHvxWcwyMMg8w',
2686         'playlist_mincount': 91,
2687         'info_dict': {
2688             'id': 'UUKfVa3S1e4PHvxWcwyMMg8w',
2689             'title': 'Uploads from lex will',
2690         }
2691     }, {
2692         'note': 'Age restricted channel',
2693         # from https://www.youtube.com/user/DeusExOfficial
2694         'url': 'https://www.youtube.com/channel/UCs0ifCMCm1icqRbqhUINa0w',
2695         'playlist_mincount': 64,
2696         'info_dict': {
2697             'id': 'UUs0ifCMCm1icqRbqhUINa0w',
2698             'title': 'Uploads from Deus Ex',
2699         },
2700     }, {
2701         'url': 'https://invidio.us/channel/UC23qupoDRn9YOAVzeoxjOQA',
2702         'only_matching': True,
2703     }]
2704
2705     @classmethod
2706     def suitable(cls, url):
2707         return (False if YoutubePlaylistsIE.suitable(url) or YoutubeLiveIE.suitable(url)
2708                 else super(YoutubeChannelIE, cls).suitable(url))
2709
2710     def _build_template_url(self, url, channel_id):
2711         return self._TEMPLATE_URL % channel_id
2712
2713     def _real_extract(self, url):
2714         channel_id = self._match_id(url)
2715
2716         url = self._build_template_url(url, channel_id)
2717
2718         # Channel by page listing is restricted to 35 pages of 30 items, i.e. 1050 videos total (see #5778)
2719         # Workaround by extracting as a playlist if managed to obtain channel playlist URL
2720         # otherwise fallback on channel by page extraction
2721         channel_page = self._download_webpage(
2722             url + '?view=57', channel_id,
2723             'Downloading channel page', fatal=False)
2724         if channel_page is False:
2725             channel_playlist_id = False
2726         else:
2727             channel_playlist_id = self._html_search_meta(
2728                 'channelId', channel_page, 'channel id', default=None)
2729             if not channel_playlist_id:
2730                 channel_url = self._html_search_meta(
2731                     ('al:ios:url', 'twitter:app:url:iphone', 'twitter:app:url:ipad'),
2732                     channel_page, 'channel url', default=None)
2733                 if channel_url:
2734                     channel_playlist_id = self._search_regex(
2735                         r'vnd\.youtube://user/([0-9A-Za-z_-]+)',
2736                         channel_url, 'channel id', default=None)
2737         if channel_playlist_id and channel_playlist_id.startswith('UC'):
2738             playlist_id = 'UU' + channel_playlist_id[2:]
2739             return self.url_result(
2740                 compat_urlparse.urljoin(url, '/playlist?list=%s' % playlist_id), 'YoutubePlaylist')
2741
2742         channel_page = self._download_webpage(url, channel_id, 'Downloading page #1')
2743         autogenerated = re.search(r'''(?x)
2744                 class="[^"]*?(?:
2745                     channel-header-autogenerated-label|
2746                     yt-channel-title-autogenerated
2747                 )[^"]*"''', channel_page) is not None
2748
2749         if autogenerated:
2750             # The videos are contained in a single page
2751             # the ajax pages can't be used, they are empty
2752             entries = [
2753                 self.url_result(
2754                     video_id, 'Youtube', video_id=video_id,
2755                     video_title=video_title)
2756                 for video_id, video_title in self.extract_videos_from_page(channel_page)]
2757             return self.playlist_result(entries, channel_id)
2758
2759         try:
2760             next(self._entries(channel_page, channel_id))
2761         except StopIteration:
2762             alert_message = self._html_search_regex(
2763                 r'(?s)<div[^>]+class=(["\']).*?\byt-alert-message\b.*?\1[^>]*>(?P<alert>[^<]+)</div>',
2764                 channel_page, 'alert', default=None, group='alert')
2765             if alert_message:
2766                 raise ExtractorError('Youtube said: %s' % alert_message, expected=True)
2767
2768         return self.playlist_result(self._entries(channel_page, channel_id), channel_id)
2769
2770
2771 class YoutubeUserIE(YoutubeChannelIE):
2772     IE_DESC = 'YouTube.com user videos (URL or "ytuser" keyword)'
2773     _VALID_URL = r'(?:(?:https?://(?:\w+\.)?youtube\.com/(?:(?P<user>user|c)/)?(?!(?:attribution_link|watch|results|shared)(?:$|[^a-z_A-Z0-9-])))|ytuser:)(?!feed/)(?P<id>[A-Za-z0-9_-]+)'
2774     _TEMPLATE_URL = 'https://www.youtube.com/%s/%s/videos'
2775     IE_NAME = 'youtube:user'
2776
2777     _TESTS = [{
2778         'url': 'https://www.youtube.com/user/TheLinuxFoundation',
2779         'playlist_mincount': 320,
2780         'info_dict': {
2781             'id': 'UUfX55Sx5hEFjoC3cNs6mCUQ',
2782             'title': 'Uploads from The Linux Foundation',
2783         }
2784     }, {
2785         # Only available via https://www.youtube.com/c/12minuteathlete/videos
2786         # but not https://www.youtube.com/user/12minuteathlete/videos
2787         'url': 'https://www.youtube.com/c/12minuteathlete/videos',
2788         'playlist_mincount': 249,
2789         'info_dict': {
2790             'id': 'UUVjM-zV6_opMDx7WYxnjZiQ',
2791             'title': 'Uploads from 12 Minute Athlete',
2792         }
2793     }, {
2794         'url': 'ytuser:phihag',
2795         'only_matching': True,
2796     }, {
2797         'url': 'https://www.youtube.com/c/gametrailers',
2798         'only_matching': True,
2799     }, {
2800         'url': 'https://www.youtube.com/gametrailers',
2801         'only_matching': True,
2802     }, {
2803         # This channel is not available, geo restricted to JP
2804         'url': 'https://www.youtube.com/user/kananishinoSMEJ/videos',
2805         'only_matching': True,
2806     }]
2807
2808     @classmethod
2809     def suitable(cls, url):
2810         # Don't return True if the url can be extracted with other youtube
2811         # extractor, the regex would is too permissive and it would match.
2812         other_yt_ies = iter(klass for (name, klass) in globals().items() if name.startswith('Youtube') and name.endswith('IE') and klass is not cls)
2813         if any(ie.suitable(url) for ie in other_yt_ies):
2814             return False
2815         else:
2816             return super(YoutubeUserIE, cls).suitable(url)
2817
2818     def _build_template_url(self, url, channel_id):
2819         mobj = re.match(self._VALID_URL, url)
2820         return self._TEMPLATE_URL % (mobj.group('user') or 'user', mobj.group('id'))
2821
2822
2823 class YoutubeLiveIE(YoutubeBaseInfoExtractor):
2824     IE_DESC = 'YouTube.com live streams'
2825     _VALID_URL = r'(?P<base_url>https?://(?:\w+\.)?youtube\.com/(?:(?:user|channel|c)/)?(?P<id>[^/]+))/live'
2826     IE_NAME = 'youtube:live'
2827
2828     _TESTS = [{
2829         'url': 'https://www.youtube.com/user/TheYoungTurks/live',
2830         'info_dict': {
2831             'id': 'a48o2S1cPoo',
2832             'ext': 'mp4',
2833             'title': 'The Young Turks - Live Main Show',
2834             'uploader': 'The Young Turks',
2835             'uploader_id': 'TheYoungTurks',
2836             'uploader_url': r're:https?://(?:www\.)?youtube\.com/user/TheYoungTurks',
2837             'upload_date': '20150715',
2838             'license': 'Standard YouTube License',
2839             'description': 'md5:438179573adcdff3c97ebb1ee632b891',
2840             'categories': ['News & Politics'],
2841             'tags': ['Cenk Uygur (TV Program Creator)', 'The Young Turks (Award-Winning Work)', 'Talk Show (TV Genre)'],
2842             'like_count': int,
2843             'dislike_count': int,
2844         },
2845         'params': {
2846             'skip_download': True,
2847         },
2848     }, {
2849         'url': 'https://www.youtube.com/channel/UC1yBKRuGpC1tSM73A0ZjYjQ/live',
2850         'only_matching': True,
2851     }, {
2852         'url': 'https://www.youtube.com/c/CommanderVideoHq/live',
2853         'only_matching': True,
2854     }, {
2855         'url': 'https://www.youtube.com/TheYoungTurks/live',
2856         'only_matching': True,
2857     }]
2858
2859     def _real_extract(self, url):
2860         mobj = re.match(self._VALID_URL, url)
2861         channel_id = mobj.group('id')
2862         base_url = mobj.group('base_url')
2863         webpage = self._download_webpage(url, channel_id, fatal=False)
2864         if webpage:
2865             page_type = self._og_search_property(
2866                 'type', webpage, 'page type', default='')
2867             video_id = self._html_search_meta(
2868                 'videoId', webpage, 'video id', default=None)
2869             if page_type.startswith('video') and video_id and re.match(
2870                     r'^[0-9A-Za-z_-]{11}$', video_id):
2871                 return self.url_result(video_id, YoutubeIE.ie_key())
2872         return self.url_result(base_url)
2873
2874
2875 class YoutubePlaylistsIE(YoutubePlaylistsBaseInfoExtractor):
2876     IE_DESC = 'YouTube.com user/channel playlists'
2877     _VALID_URL = r'https?://(?:\w+\.)?youtube\.com/(?:user|channel)/(?P<id>[^/]+)/playlists'
2878     IE_NAME = 'youtube:playlists'
2879
2880     _TESTS = [{
2881         'url': 'https://www.youtube.com/user/ThirstForScience/playlists',
2882         'playlist_mincount': 4,
2883         'info_dict': {
2884             'id': 'ThirstForScience',
2885             'title': 'Thirst for Science',
2886         },
2887     }, {
2888         # with "Load more" button
2889         'url': 'https://www.youtube.com/user/igorkle1/playlists?view=1&sort=dd',
2890         'playlist_mincount': 70,
2891         'info_dict': {
2892             'id': 'igorkle1',
2893             'title': 'Игорь Клейнер',
2894         },
2895     }, {
2896         'url': 'https://www.youtube.com/channel/UCiU1dHvZObB2iP6xkJ__Icw/playlists',
2897         'playlist_mincount': 17,
2898         'info_dict': {
2899             'id': 'UCiU1dHvZObB2iP6xkJ__Icw',
2900             'title': 'Chem Player',
2901         },
2902     }]
2903
2904
2905 class YoutubeSearchBaseInfoExtractor(YoutubePlaylistBaseInfoExtractor):
2906     _VIDEO_RE = r'href="\s*/watch\?v=(?P<id>[0-9A-Za-z_-]{11})(?:[^"]*"[^>]+\btitle="(?P<title>[^"]+))?'
2907
2908
2909 class YoutubeSearchIE(SearchInfoExtractor, YoutubeSearchBaseInfoExtractor):
2910     IE_DESC = 'YouTube.com searches'
2911     # there doesn't appear to be a real limit, for example if you search for
2912     # 'python' you get more than 8.000.000 results
2913     _MAX_RESULTS = float('inf')
2914     IE_NAME = 'youtube:search'
2915     _SEARCH_KEY = 'ytsearch'
2916     _EXTRA_QUERY_ARGS = {}
2917     _TESTS = []
2918
2919     def _get_n_results(self, query, n):
2920         """Get a specified number of results for a query"""
2921
2922         videos = []
2923         limit = n
2924
2925         url_query = {
2926             'search_query': query.encode('utf-8'),
2927         }
2928         url_query.update(self._EXTRA_QUERY_ARGS)
2929         result_url = 'https://www.youtube.com/results?' + compat_urllib_parse_urlencode(url_query)
2930
2931         for pagenum in itertools.count(1):
2932             data = self._download_json(
2933                 result_url, video_id='query "%s"' % query,
2934                 note='Downloading page %s' % pagenum,
2935                 errnote='Unable to download API page',
2936                 query={'spf': 'navigate'})
2937             html_content = data[1]['body']['content']
2938
2939             if 'class="search-message' in html_content:
2940                 raise ExtractorError(
2941                     '[youtube] No video results', expected=True)
2942
2943             new_videos = list(self._process_page(html_content))
2944             videos += new_videos
2945             if not new_videos or len(videos) > limit:
2946                 break
2947             next_link = self._html_search_regex(
2948                 r'href="(/results\?[^"]*\bsp=[^"]+)"[^>]*>\s*<span[^>]+class="[^"]*\byt-uix-button-content\b[^"]*"[^>]*>Next',
2949                 html_content, 'next link', default=None)
2950             if next_link is None:
2951                 break
2952             result_url = compat_urlparse.urljoin('https://www.youtube.com/', next_link)
2953
2954         if len(videos) > n:
2955             videos = videos[:n]
2956         return self.playlist_result(videos, query)
2957
2958
2959 class YoutubeSearchDateIE(YoutubeSearchIE):
2960     IE_NAME = YoutubeSearchIE.IE_NAME + ':date'
2961     _SEARCH_KEY = 'ytsearchdate'
2962     IE_DESC = 'YouTube.com searches, newest videos first'
2963     _EXTRA_QUERY_ARGS = {'search_sort': 'video_date_uploaded'}
2964
2965
2966 class YoutubeSearchURLIE(YoutubeSearchBaseInfoExtractor):
2967     IE_DESC = 'YouTube.com search URLs'
2968     IE_NAME = 'youtube:search_url'
2969     _VALID_URL = r'https?://(?:www\.)?youtube\.com/results\?(.*?&)?(?:search_query|q)=(?P<query>[^&]+)(?:[&]|$)'
2970     _TESTS = [{
2971         'url': 'https://www.youtube.com/results?baz=bar&search_query=youtube-dl+test+video&filters=video&lclk=video',
2972         'playlist_mincount': 5,
2973         'info_dict': {
2974             'title': 'youtube-dl test video',
2975         }
2976     }, {
2977         'url': 'https://www.youtube.com/results?q=test&sp=EgQIBBgB',
2978         'only_matching': True,
2979     }]
2980
2981     def _real_extract(self, url):
2982         mobj = re.match(self._VALID_URL, url)
2983         query = compat_urllib_parse_unquote_plus(mobj.group('query'))
2984         webpage = self._download_webpage(url, query)
2985         return self.playlist_result(self._process_page(webpage), playlist_title=query)
2986
2987
2988 class YoutubeShowIE(YoutubePlaylistsBaseInfoExtractor):
2989     IE_DESC = 'YouTube.com (multi-season) shows'
2990     _VALID_URL = r'https?://(?:www\.)?youtube\.com/show/(?P<id>[^?#]*)'
2991     IE_NAME = 'youtube:show'
2992     _TESTS = [{
2993         'url': 'https://www.youtube.com/show/airdisasters',
2994         'playlist_mincount': 5,
2995         'info_dict': {
2996             'id': 'airdisasters',
2997             'title': 'Air Disasters',
2998         }
2999     }]
3000
3001     def _real_extract(self, url):
3002         playlist_id = self._match_id(url)
3003         return super(YoutubeShowIE, self)._real_extract(
3004             'https://www.youtube.com/show/%s/playlists' % playlist_id)
3005
3006
3007 class YoutubeFeedsInfoExtractor(YoutubeBaseInfoExtractor):
3008     """
3009     Base class for feed extractors
3010     Subclasses must define the _FEED_NAME and _PLAYLIST_TITLE properties.
3011     """
3012     _LOGIN_REQUIRED = True
3013
3014     @property
3015     def IE_NAME(self):
3016         return 'youtube:%s' % self._FEED_NAME
3017
3018     def _real_initialize(self):
3019         self._login()
3020
3021     def _entries(self, page):
3022         # The extraction process is the same as for playlists, but the regex
3023         # for the video ids doesn't contain an index
3024         ids = []
3025         more_widget_html = content_html = page
3026         for page_num in itertools.count(1):
3027             matches = re.findall(r'href="\s*/watch\?v=([0-9A-Za-z_-]{11})', content_html)
3028
3029             # 'recommended' feed has infinite 'load more' and each new portion spins
3030             # the same videos in (sometimes) slightly different order, so we'll check
3031             # for unicity and break when portion has no new videos
3032             new_ids = list(filter(lambda video_id: video_id not in ids, orderedSet(matches)))
3033             if not new_ids:
3034                 break
3035
3036             ids.extend(new_ids)
3037
3038             for entry in self._ids_to_results(new_ids):
3039                 yield entry
3040
3041             mobj = re.search(r'data-uix-load-more-href="/?(?P<more>[^"]+)"', more_widget_html)
3042             if not mobj:
3043                 break
3044
3045             more = self._download_json(
3046                 'https://youtube.com/%s' % mobj.group('more'), self._PLAYLIST_TITLE,
3047                 'Downloading page #%s' % page_num,
3048                 transform_source=uppercase_escape)
3049             content_html = more['content_html']
3050             more_widget_html = more['load_more_widget_html']
3051
3052     def _real_extract(self, url):
3053         page = self._download_webpage(
3054             'https://www.youtube.com/feed/%s' % self._FEED_NAME,
3055             self._PLAYLIST_TITLE)
3056         return self.playlist_result(
3057             self._entries(page), playlist_title=self._PLAYLIST_TITLE)
3058
3059
3060 class YoutubeWatchLaterIE(YoutubePlaylistIE):
3061     IE_NAME = 'youtube:watchlater'
3062     IE_DESC = 'Youtube watch later list, ":ytwatchlater" for short (requires authentication)'
3063     _VALID_URL = r'https?://(?:www\.)?youtube\.com/(?:feed/watch_later|(?:playlist|watch)\?(?:.+&)?list=WL)|:ytwatchlater'
3064
3065     _TESTS = [{
3066         'url': 'https://www.youtube.com/playlist?list=WL',
3067         'only_matching': True,
3068     }, {
3069         'url': 'https://www.youtube.com/watch?v=bCNU9TrbiRk&index=1&list=WL',
3070         'only_matching': True,
3071     }]
3072
3073     def _real_extract(self, url):
3074         _, video = self._check_download_just_video(url, 'WL')
3075         if video:
3076             return video
3077         _, playlist = self._extract_playlist('WL')
3078         return playlist
3079
3080
3081 class YoutubeFavouritesIE(YoutubeBaseInfoExtractor):
3082     IE_NAME = 'youtube:favorites'
3083     IE_DESC = 'YouTube.com favourite videos, ":ytfav" for short (requires authentication)'
3084     _VALID_URL = r'https?://(?:www\.)?youtube\.com/my_favorites|:ytfav(?:ou?rites)?'
3085     _LOGIN_REQUIRED = True
3086
3087     def _real_extract(self, url):
3088         webpage = self._download_webpage('https://www.youtube.com/my_favorites', 'Youtube Favourites videos')
3089         playlist_id = self._search_regex(r'list=(.+?)["&]', webpage, 'favourites playlist id')
3090         return self.url_result(playlist_id, 'YoutubePlaylist')
3091
3092
3093 class YoutubeRecommendedIE(YoutubeFeedsInfoExtractor):
3094     IE_DESC = 'YouTube.com recommended videos, ":ytrec" for short (requires authentication)'
3095     _VALID_URL = r'https?://(?:www\.)?youtube\.com/feed/recommended|:ytrec(?:ommended)?'
3096     _FEED_NAME = 'recommended'
3097     _PLAYLIST_TITLE = 'Youtube Recommended videos'
3098
3099
3100 class YoutubeSubscriptionsIE(YoutubeFeedsInfoExtractor):
3101     IE_DESC = 'YouTube.com subscriptions feed, "ytsubs" keyword (requires authentication)'
3102     _VALID_URL = r'https?://(?:www\.)?youtube\.com/feed/subscriptions|:ytsubs(?:criptions)?'
3103     _FEED_NAME = 'subscriptions'
3104     _PLAYLIST_TITLE = 'Youtube Subscriptions'
3105
3106
3107 class YoutubeHistoryIE(YoutubeFeedsInfoExtractor):
3108     IE_DESC = 'Youtube watch history, ":ythistory" for short (requires authentication)'
3109     _VALID_URL = r'https?://(?:www\.)?youtube\.com/feed/history|:ythistory'
3110     _FEED_NAME = 'history'
3111     _PLAYLIST_TITLE = 'Youtube History'
3112
3113
3114 class YoutubeTruncatedURLIE(InfoExtractor):
3115     IE_NAME = 'youtube:truncated_url'
3116     IE_DESC = False  # Do not list
3117     _VALID_URL = r'''(?x)
3118         (?:https?://)?
3119         (?:\w+\.)?[yY][oO][uU][tT][uU][bB][eE](?:-nocookie)?\.com/
3120         (?:watch\?(?:
3121             feature=[a-z_]+|
3122             annotation_id=annotation_[^&]+|
3123             x-yt-cl=[0-9]+|
3124             hl=[^&]*|
3125             t=[0-9]+
3126         )?
3127         |
3128             attribution_link\?a=[^&]+
3129         )
3130         $
3131     '''
3132
3133     _TESTS = [{
3134         'url': 'https://www.youtube.com/watch?annotation_id=annotation_3951667041',
3135         'only_matching': True,
3136     }, {
3137         'url': 'https://www.youtube.com/watch?',
3138         'only_matching': True,
3139     }, {
3140         'url': 'https://www.youtube.com/watch?x-yt-cl=84503534',
3141         'only_matching': True,
3142     }, {
3143         'url': 'https://www.youtube.com/watch?feature=foo',
3144         'only_matching': True,
3145     }, {
3146         'url': 'https://www.youtube.com/watch?hl=en-GB',
3147         'only_matching': True,
3148     }, {
3149         'url': 'https://www.youtube.com/watch?t=2372',
3150         'only_matching': True,
3151     }]
3152
3153     def _real_extract(self, url):
3154         raise ExtractorError(
3155             'Did you forget to quote the URL? Remember that & is a meta '
3156             'character in most shells, so you want to put the URL in quotes, '
3157             'like  youtube-dl '
3158             '"https://www.youtube.com/watch?feature=foo&v=BaW_jenozKc" '
3159             ' or simply  youtube-dl BaW_jenozKc  .',
3160             expected=True)
3161
3162
3163 class YoutubeTruncatedIDIE(InfoExtractor):
3164     IE_NAME = 'youtube:truncated_id'
3165     IE_DESC = False  # Do not list
3166     _VALID_URL = r'https?://(?:www\.)?youtube\.com/watch\?v=(?P<id>[0-9A-Za-z_-]{1,10})$'
3167
3168     _TESTS = [{
3169         'url': 'https://www.youtube.com/watch?v=N_708QY7Ob',
3170         'only_matching': True,
3171     }]
3172
3173     def _real_extract(self, url):
3174         video_id = self._match_id(url)
3175         raise ExtractorError(
3176             'Incomplete YouTube ID %s. URL %s looks truncated.' % (video_id, url),
3177             expected=True)