yt_dlp/extractor/vk.py

   1 import collections
   2 import hashlib
   3 import re
   4
   5 from .common import InfoExtractor
   6 from .dailymotion import DailymotionIE
   7 from .odnoklassniki import OdnoklassnikiIE
   8 from .pladform import PladformIE
   9 from .sibnet import SibnetEmbedIE
  10 from .vimeo import VimeoIE
  11 from .youtube import YoutubeIE
  12 from ..utils import (
  13     ExtractorError,
  14     clean_html,
  15     get_element_by_class,
  16     get_element_html_by_id,
  17     int_or_none,
  18     join_nonempty,
  19     str_or_none,
  20     str_to_int,
  21     try_call,
  22     unescapeHTML,
  23     unified_timestamp,
  24     update_url_query,
  25     url_or_none,
  26     urlencode_postdata,
  27     urljoin,
  28 )
  29
  30
  31 class VKBaseIE(InfoExtractor):
  32     _NETRC_MACHINE = 'vk'
  33
  34     def _download_webpage_handle(self, url_or_request, video_id, *args, fatal=True, **kwargs):
  35         response = super()._download_webpage_handle(url_or_request, video_id, *args, fatal=fatal, **kwargs)
  36         challenge_url, cookie = response[1].geturl() if response else '', None
  37         if challenge_url.startswith('https://vk.com/429.html?'):
  38             cookie = self._get_cookies(challenge_url).get('hash429')
  39         if not cookie:
  40             return response
  41
  42         hash429 = hashlib.md5(cookie.value.encode('ascii')).hexdigest()
  43         self._request_webpage(
  44             update_url_query(challenge_url, {'key': hash429}), video_id, fatal=fatal,
  45             note='Resolving WAF challenge', errnote='Failed to bypass WAF challenge')
  46         return super()._download_webpage_handle(url_or_request, video_id, *args, fatal=True, **kwargs)
  47
  48     def _perform_login(self, username, password):
  49         login_page, url_handle = self._download_webpage_handle(
  50             'https://vk.com', None, 'Downloading login page')
  51
  52         login_form = self._hidden_inputs(login_page)
  53
  54         login_form.update({
  55             'email': username.encode('cp1251'),
  56             'pass': password.encode('cp1251'),
  57         })
  58
  59         # vk serves two same remixlhk cookies in Set-Cookie header and expects
  60         # first one to be actually set
  61         self._apply_first_set_cookie_header(url_handle, 'remixlhk')
  62
  63         login_page = self._download_webpage(
  64             'https://vk.com/login', None,
  65             note='Logging in',
  66             data=urlencode_postdata(login_form))
  67
  68         if re.search(r'onLoginFailed', login_page):
  69             raise ExtractorError(
  70                 'Unable to login, incorrect username and/or password', expected=True)
  71
  72     def _download_payload(self, path, video_id, data, fatal=True):
  73         endpoint = f'https://vk.com/{path}.php'
  74         data['al'] = 1
  75         code, payload = self._download_json(
  76             endpoint, video_id, data=urlencode_postdata(data), fatal=fatal,
  77             headers={
  78                 'Referer': endpoint,
  79                 'X-Requested-With': 'XMLHttpRequest',
  80             })['payload']
  81         if code == '3':
  82             self.raise_login_required()
  83         elif code == '8':
  84             raise ExtractorError(clean_html(payload[0][1:-1]), expected=True)
  85         return payload
  86
  87
  88 class VKIE(VKBaseIE):
  89     IE_NAME = 'vk'
  90     IE_DESC = 'VK'
  91     _EMBED_REGEX = [r'<iframe[^>]+?src=(["\'])(?P<url>https?://vk\.com/video_ext\.php.+?)\1']
  92     _VALID_URL = r'''(?x)
  93                     https?://
  94                         (?:
  95                             (?:
  96                                 (?:(?:m|new)\.)?vk\.com/video_|
  97                                 (?:www\.)?daxab.com/
  98                             )
  99                             ext\.php\?(?P<embed_query>.*?\boid=(?P<oid>-?\d+).*?\bid=(?P<id>\d+).*)|
 100                             (?:
 101                                 (?:(?:m|new)\.)?vk\.com/(?:.+?\?.*?z=)?(?:video|clip)|
 102                                 (?:www\.)?daxab.com/embed/
 103                             )
 104                             (?P<videoid>-?\d+_\d+)(?:.*\blist=(?P<list_id>([\da-f]+)|(ln-[\da-zA-Z]+)))?
 105                         )
 106                     '''
 107
 108     _TESTS = [
 109         {
 110             'url': 'http://vk.com/videos-77521?z=video-77521_162222515%2Fclub77521',
 111             'info_dict': {
 112                 'id': '-77521_162222515',
 113                 'ext': 'mp4',
 114                 'title': 'ProtivoGunz - Хуёвая песня',
 115                 'uploader': 're:(?:Noize MC|Alexander Ilyashenko).*',
 116                 'uploader_id': '39545378',
 117                 'duration': 195,
 118                 'timestamp': 1329049880,
 119                 'upload_date': '20120212',
 120                 'comment_count': int,
 121                 'like_count': int,
 122                 'thumbnail': r're:https?://.+(?:\.jpg|getVideoPreview.*)$',
 123             },
 124             'params': {'skip_download': 'm3u8'},
 125         },
 126         {
 127             'url': 'http://vk.com/video205387401_165548505',
 128             'info_dict': {
 129                 'id': '205387401_165548505',
 130                 'ext': 'mp4',
 131                 'title': 'No name',
 132                 'uploader': 'Tom Cruise',
 133                 'uploader_id': '205387401',
 134                 'duration': 9,
 135                 'timestamp': 1374364108,
 136                 'upload_date': '20130720',
 137                 'comment_count': int,
 138                 'like_count': int,
 139                 'thumbnail': r're:https?://.+(?:\.jpg|getVideoPreview.*)$',
 140             }
 141         },
 142         {
 143             'note': 'Embedded video',
 144             'url': 'https://vk.com/video_ext.php?oid=-77521&id=162222515&hash=87b046504ccd8bfa',
 145             'info_dict': {
 146                 'id': '-77521_162222515',
 147                 'ext': 'mp4',
 148                 'uploader': 're:(?:Noize MC|Alexander Ilyashenko).*',
 149                 'title': 'ProtivoGunz - Хуёвая песня',
 150                 'duration': 195,
 151                 'upload_date': '20120212',
 152                 'timestamp': 1329049880,
 153                 'uploader_id': '39545378',
 154                 'thumbnail': r're:https?://.+(?:\.jpg|getVideoPreview.*)$',
 155             },
 156             'params': {'skip_download': 'm3u8'},
 157         },
 158         {
 159             'url': 'https://vk.com/video-93049196_456239755?list=ln-cBjJ7S4jYYx3ADnmDT',
 160             'info_dict': {
 161                 'id': '-93049196_456239755',
 162                 'ext': 'mp4',
 163                 'title': '8 серия (озвучка)',
 164                 'duration': 8383,
 165                 'comment_count': int,
 166                 'uploader': 'Dizi2021',
 167                 'like_count': int,
 168                 'timestamp': 1640162189,
 169                 'upload_date': '20211222',
 170                 'uploader_id': '-93049196',
 171                 'thumbnail': r're:https?://.+(?:\.jpg|getVideoPreview.*)$',
 172             },
 173         },
 174         {
 175             'note': 'youtube embed',
 176             'url': 'https://vk.com/video276849682_170681728',
 177             'info_dict': {
 178                 'id': 'V3K4mi0SYkc',
 179                 'ext': 'mp4',
 180                 'title': "DSWD Awards 'Children's Joy Foundation, Inc.' Certificate of Registration and License to Operate",
 181                 'description': 'md5:bf9c26cfa4acdfb146362682edd3827a',
 182                 'duration': 178,
 183                 'upload_date': '20130117',
 184                 'uploader': "Children's Joy Foundation Inc.",
 185                 'uploader_id': 'thecjf',
 186                 'view_count': int,
 187                 'channel_id': 'UCgzCNQ11TmR9V97ECnhi3gw',
 188                 'availability': 'public',
 189                 'like_count': int,
 190                 'live_status': 'not_live',
 191                 'playable_in_embed': True,
 192                 'channel': 'Children\'s Joy Foundation Inc.',
 193                 'uploader_url': 'http://www.youtube.com/user/thecjf',
 194                 'thumbnail': r're:https?://.+\.jpg$',
 195                 'tags': 'count:27',
 196                 'start_time': 0.0,
 197                 'categories': ['Nonprofits & Activism'],
 198                 'channel_url': 'https://www.youtube.com/channel/UCgzCNQ11TmR9V97ECnhi3gw',
 199                 'channel_follower_count': int,
 200                 'age_limit': 0,
 201             },
 202         },
 203         {
 204             'note': 'dailymotion embed',
 205             'url': 'https://vk.com/video-95168827_456239103?list=cca524a0f0d5557e16',
 206             'info_dict': {
 207                 'id': 'x8gfli0',
 208                 'ext': 'mp4',
 209                 'title': 'md5:45410f60ccd4b2760da98cb5fc777d70',
 210                 'description': 'md5:2e71c5c9413735cfa06cf1a166f16c84',
 211                 'uploader': 'Movies and cinema.',
 212                 'upload_date': '20221218',
 213                 'uploader_id': 'x1jdavv',
 214                 'timestamp': 1671387617,
 215                 'age_limit': 0,
 216                 'duration': 2918,
 217                 'like_count': int,
 218                 'view_count': int,
 219                 'thumbnail': r're:https?://.+x1080$',
 220                 'tags': list
 221             },
 222         },
 223         {
 224             'url': 'https://vk.com/clips-74006511?z=clip-74006511_456247211',
 225             'info_dict': {
 226                 'id': '-74006511_456247211',
 227                 'ext': 'mp4',
 228                 'comment_count': int,
 229                 'duration': 9,
 230                 'like_count': int,
 231                 'thumbnail': r're:https?://.+(?:\.jpg|getVideoPreview.*)$',
 232                 'timestamp': 1664995597,
 233                 'title': 'Clip by @madempress',
 234                 'upload_date': '20221005',
 235                 'uploader': 'Шальная императрица',
 236                 'uploader_id': '-74006511',
 237             },
 238         },
 239         {
 240             # video key is extra_data not url\d+
 241             'url': 'http://vk.com/video-110305615_171782105',
 242             'md5': 'e13fcda136f99764872e739d13fac1d1',
 243             'info_dict': {
 244                 'id': '-110305615_171782105',
 245                 'ext': 'mp4',
 246                 'title': 'S-Dance, репетиции к The way show',
 247                 'uploader': 'THE WAY SHOW | 17 апреля',
 248                 'uploader_id': '-110305615',
 249                 'timestamp': 1454859345,
 250                 'upload_date': '20160207',
 251             },
 252             'skip': 'Removed',
 253         },
 254         {
 255             'note': 'finished live stream, postlive_mp4',
 256             'url': 'https://vk.com/videos-387766?z=video-387766_456242764%2Fpl_-387766_-2',
 257             'info_dict': {
 258                 'id': '-387766_456242764',
 259                 'ext': 'mp4',
 260                 'title': 'ИгроМир 2016 День 1 — Игромания Утром',
 261                 'uploader': 'Игромания',
 262                 'duration': 5239,
 263                 'upload_date': '20160929',
 264                 'uploader_id': '-387766',
 265                 'timestamp': 1475137527,
 266                 'thumbnail': r're:https?://.+\.jpg$',
 267                 'comment_count': int,
 268                 'like_count': int,
 269             },
 270             'params': {
 271                 'skip_download': True,
 272             },
 273         },
 274         {
 275             # live stream, hls and rtmp links, most likely already finished live
 276             # stream by the time you are reading this comment
 277             'url': 'https://vk.com/video-140332_456239111',
 278             'only_matching': True,
 279         },
 280         {
 281             # removed video, just testing that we match the pattern
 282             'url': 'http://vk.com/feed?z=video-43215063_166094326%2Fbb50cacd3177146d7a',
 283             'only_matching': True,
 284         },
 285         {
 286             # age restricted video, requires vk account credentials
 287             'url': 'https://vk.com/video205387401_164765225',
 288             'only_matching': True,
 289         },
 290         {
 291             # pladform embed
 292             'url': 'https://vk.com/video-76116461_171554880',
 293             'only_matching': True,
 294         },
 295         {
 296             'url': 'http://new.vk.com/video205387401_165548505',
 297             'only_matching': True,
 298         },
 299         {
 300             # This video is no longer available, because its author has been blocked.
 301             'url': 'https://vk.com/video-10639516_456240611',
 302             'only_matching': True,
 303         },
 304         {
 305             # The video is not available in your region.
 306             'url': 'https://vk.com/video-51812607_171445436',
 307             'only_matching': True,
 308         },
 309         {
 310             'url': 'https://vk.com/clip30014565_456240946',
 311             'only_matching': True,
 312         }]
 313
 314     def _real_extract(self, url):
 315         mobj = self._match_valid_url(url)
 316         video_id = mobj.group('videoid')
 317
 318         mv_data = {}
 319         if video_id:
 320             data = {
 321                 'act': 'show',
 322                 'video': video_id,
 323             }
 324             # Some videos (removed?) can only be downloaded with list id specified
 325             list_id = mobj.group('list_id')
 326             if list_id:
 327                 data['list'] = list_id
 328
 329             payload = self._download_payload('al_video', video_id, data)
 330             info_page = payload[1]
 331             opts = payload[-1]
 332             mv_data = opts.get('mvData') or {}
 333             player = opts.get('player') or {}
 334         else:
 335             video_id = '%s_%s' % (mobj.group('oid'), mobj.group('id'))
 336
 337             info_page = self._download_webpage(
 338                 'http://vk.com/video_ext.php?' + mobj.group('embed_query'), video_id)
 339
 340             error_message = self._html_search_regex(
 341                 [r'(?s)<!><div[^>]+class="video_layer_message"[^>]*>(.+?)</div>',
 342                     r'(?s)<div[^>]+id="video_ext_msg"[^>]*>(.+?)</div>'],
 343                 info_page, 'error message', default=None)
 344             if error_message:
 345                 raise ExtractorError(error_message, expected=True)
 346
 347             if re.search(r'<!>/login\.php\?.*\bact=security_check', info_page):
 348                 raise ExtractorError(
 349                     'You are trying to log in from an unusual location. You should confirm ownership at vk.com to log in with this IP.',
 350                     expected=True)
 351
 352             ERROR_COPYRIGHT = 'Video %s has been removed from public access due to rightholder complaint.'
 353
 354             ERRORS = {
 355                 r'>Видеозапись .*? была изъята из публичного доступа в связи с обращением правообладателя.<':
 356                 ERROR_COPYRIGHT,
 357
 358                 r'>The video .*? was removed from public access by request of the copyright holder.<':
 359                 ERROR_COPYRIGHT,
 360
 361                 r'<!>Please log in or <':
 362                 'Video %s is only available for registered users, '
 363                 'use --username and --password options to provide account credentials.',
 364
 365                 r'<!>Unknown error':
 366                 'Video %s does not exist.',
 367
 368                 r'<!>Видео временно недоступно':
 369                 'Video %s is temporarily unavailable.',
 370
 371                 r'<!>Access denied':
 372                 'Access denied to video %s.',
 373
 374                 r'<!>Видеозапись недоступна, так как её автор был заблокирован.':
 375                 'Video %s is no longer available, because its author has been blocked.',
 376
 377                 r'<!>This video is no longer available, because its author has been blocked.':
 378                 'Video %s is no longer available, because its author has been blocked.',
 379
 380                 r'<!>This video is no longer available, because it has been deleted.':
 381                 'Video %s is no longer available, because it has been deleted.',
 382
 383                 r'<!>The video .+? is not available in your region.':
 384                 'Video %s is not available in your region.',
 385             }
 386
 387             for error_re, error_msg in ERRORS.items():
 388                 if re.search(error_re, info_page):
 389                     raise ExtractorError(error_msg % video_id, expected=True)
 390
 391             player = self._parse_json(self._search_regex(
 392                 r'var\s+playerParams\s*=\s*({.+?})\s*;\s*\n',
 393                 info_page, 'player params'), video_id)
 394
 395         youtube_url = YoutubeIE._extract_url(info_page)
 396         if youtube_url:
 397             return self.url_result(youtube_url, YoutubeIE.ie_key())
 398
 399         vimeo_url = VimeoIE._extract_url(url, info_page)
 400         if vimeo_url is not None:
 401             return self.url_result(vimeo_url, VimeoIE.ie_key())
 402
 403         pladform_url = PladformIE._extract_url(info_page)
 404         if pladform_url:
 405             return self.url_result(pladform_url, PladformIE.ie_key())
 406
 407         m_rutube = re.search(
 408             r'\ssrc="((?:https?:)?//rutube\.ru\\?/(?:video|play)\\?/embed(?:.*?))\\?"', info_page)
 409         if m_rutube is not None:
 410             rutube_url = self._proto_relative_url(
 411                 m_rutube.group(1).replace('\\', ''))
 412             return self.url_result(rutube_url)
 413
 414         dailymotion_url = next(DailymotionIE._extract_embed_urls(url, info_page), None)
 415         if dailymotion_url:
 416             return self.url_result(dailymotion_url, DailymotionIE.ie_key())
 417
 418         odnoklassniki_url = OdnoklassnikiIE._extract_url(info_page)
 419         if odnoklassniki_url:
 420             return self.url_result(odnoklassniki_url, OdnoklassnikiIE.ie_key())
 421
 422         sibnet_url = next(SibnetEmbedIE._extract_embed_urls(url, info_page), None)
 423         if sibnet_url:
 424             return self.url_result(sibnet_url)
 425
 426         m_opts = re.search(r'(?s)var\s+opts\s*=\s*({.+?});', info_page)
 427         if m_opts:
 428             m_opts_url = re.search(r"url\s*:\s*'((?!/\b)[^']+)", m_opts.group(1))
 429             if m_opts_url:
 430                 opts_url = m_opts_url.group(1)
 431                 if opts_url.startswith('//'):
 432                     opts_url = 'http:' + opts_url
 433                 return self.url_result(opts_url)
 434
 435         data = player['params'][0]
 436         title = unescapeHTML(data['md_title'])
 437
 438         # 2 = live
 439         # 3 = post live (finished live)
 440         is_live = data.get('live') == 2
 441
 442         timestamp = unified_timestamp(self._html_search_regex(
 443             r'class=["\']mv_info_date[^>]+>([^<]+)(?:<|from)', info_page,
 444             'upload date', default=None)) or int_or_none(data.get('date'))
 445
 446         view_count = str_to_int(self._search_regex(
 447             r'class=["\']mv_views_count[^>]+>\s*([\d,.]+)',
 448             info_page, 'view count', default=None))
 449
 450         formats = []
 451         for format_id, format_url in data.items():
 452             format_url = url_or_none(format_url)
 453             if not format_url or not format_url.startswith(('http', '//', 'rtmp')):
 454                 continue
 455             if (format_id.startswith(('url', 'cache'))
 456                     or format_id in ('extra_data', 'live_mp4', 'postlive_mp4')):
 457                 height = int_or_none(self._search_regex(
 458                     r'^(?:url|cache)(\d+)', format_id, 'height', default=None))
 459                 formats.append({
 460                     'format_id': format_id,
 461                     'url': format_url,
 462                     'height': height,
 463                 })
 464             elif format_id == 'hls':
 465                 formats.extend(self._extract_m3u8_formats(
 466                     format_url, video_id, 'mp4', 'm3u8_native',
 467                     m3u8_id=format_id, fatal=False, live=is_live))
 468             elif format_id == 'rtmp':
 469                 formats.append({
 470                     'format_id': format_id,
 471                     'url': format_url,
 472                     'ext': 'flv',
 473                 })
 474
 475         subtitles = {}
 476         for sub in data.get('subs') or {}:
 477             subtitles.setdefault(sub.get('lang', 'en'), []).append({
 478                 'ext': sub.get('title', '.srt').split('.')[-1],
 479                 'url': url_or_none(sub.get('url')),
 480             })
 481
 482         return {
 483             'id': video_id,
 484             'formats': formats,
 485             'title': title,
 486             'thumbnail': data.get('jpg'),
 487             'uploader': data.get('md_author'),
 488             'uploader_id': str_or_none(data.get('author_id') or mv_data.get('authorId')),
 489             'duration': int_or_none(data.get('duration') or mv_data.get('duration')),
 490             'timestamp': timestamp,
 491             'view_count': view_count,
 492             'like_count': int_or_none(mv_data.get('likes')),
 493             'comment_count': int_or_none(mv_data.get('commcount')),
 494             'is_live': is_live,
 495             'subtitles': subtitles,
 496         }
 497
 498
 499 class VKUserVideosIE(VKBaseIE):
 500     IE_NAME = 'vk:uservideos'
 501     IE_DESC = "VK - User's Videos"
 502     _VALID_URL = r'https?://(?:(?:m|new)\.)?vk\.com/video/(?:playlist/)?(?P<id>[^?$#/&]+)(?!\?.*\bz=video)(?:[/?#&](?:.*?\bsection=(?P<section>\w+))?|$)'
 503     _TEMPLATE_URL = 'https://vk.com/videos'
 504     _TESTS = [{
 505         'url': 'https://vk.com/video/@mobidevices',
 506         'info_dict': {
 507             'id': '-17892518_all',
 508         },
 509         'playlist_mincount': 1355,
 510     }, {
 511         'url': 'https://vk.com/video/@mobidevices?section=uploaded',
 512         'info_dict': {
 513             'id': '-17892518_uploaded',
 514         },
 515         'playlist_mincount': 182,
 516     }, {
 517         'url': 'https://vk.com/video/playlist/-174476437_2',
 518         'info_dict': {
 519             'id': '-174476437_playlist_2',
 520             'title': 'Анонсы'
 521         },
 522         'playlist_mincount': 108,
 523     }]
 524     _VIDEO = collections.namedtuple('Video', ['owner_id', 'id'])
 525
 526     def _entries(self, page_id, section):
 527         video_list_json = self._download_payload('al_video', page_id, {
 528             'act': 'load_videos_silent',
 529             'offset': 0,
 530             'oid': page_id,
 531             'section': section,
 532         })[0][section]
 533         count = video_list_json['count']
 534         total = video_list_json['total']
 535         video_list = video_list_json['list']
 536
 537         while True:
 538             for video in video_list:
 539                 v = self._VIDEO._make(video[:2])
 540                 video_id = '%d_%d' % (v.owner_id, v.id)
 541                 yield self.url_result(
 542                     'http://vk.com/video' + video_id, VKIE.ie_key(), video_id)
 543             if count >= total:
 544                 break
 545             video_list_json = self._download_payload('al_video', page_id, {
 546                 'act': 'load_videos_silent',
 547                 'offset': count,
 548                 'oid': page_id,
 549                 'section': section,
 550             })[0][section]
 551             count += video_list_json['count']
 552             video_list = video_list_json['list']
 553
 554     def _real_extract(self, url):
 555         u_id, section = self._match_valid_url(url).groups()
 556         webpage = self._download_webpage(url, u_id)
 557
 558         if u_id.startswith('@'):
 559             page_id = self._search_regex(r'data-owner-id\s?=\s?"([^"]+)"', webpage, 'page_id')
 560         elif '_' in u_id:
 561             page_id, section = u_id.split('_', 1)
 562             section = f'playlist_{section}'
 563         else:
 564             raise ExtractorError('Invalid URL', expected=True)
 565
 566         if not section:
 567             section = 'all'
 568
 569         playlist_title = clean_html(get_element_by_class('VideoInfoPanel__title', webpage))
 570         return self.playlist_result(self._entries(page_id, section), '%s_%s' % (page_id, section), playlist_title)
 571
 572
 573 class VKWallPostIE(VKBaseIE):
 574     IE_NAME = 'vk:wallpost'
 575     _VALID_URL = r'https?://(?:(?:(?:(?:m|new)\.)?vk\.com/(?:[^?]+\?.*\bw=)?wall(?P<id>-?\d+_\d+)))'
 576     _TESTS = [{
 577         # public page URL, audio playlist
 578         'url': 'https://vk.com/bs.official?w=wall-23538238_35',
 579         'info_dict': {
 580             'id': '-23538238_35',
 581             'title': 'Black Shadow - Wall post -23538238_35',
 582             'description': 'md5:190c78f905a53e0de793d83933c6e67f',
 583         },
 584         'playlist': [{
 585             'md5': '5ba93864ec5b85f7ce19a9af4af080f6',
 586             'info_dict': {
 587                 'id': '135220665_111806521',
 588                 'ext': 'm4a',
 589                 'title': 'Black Shadow - Слепое Верование',
 590                 'duration': 370,
 591                 'uploader': 'Black Shadow',
 592                 'artist': 'Black Shadow',
 593                 'track': 'Слепое Верование',
 594             },
 595         }, {
 596             'md5': '4cc7e804579122b17ea95af7834c9233',
 597             'info_dict': {
 598                 'id': '135220665_111802303',
 599                 'ext': 'm4a',
 600                 'title': 'Black Shadow - Война - Негасимое Бездны Пламя!',
 601                 'duration': 423,
 602                 'uploader': 'Black Shadow',
 603                 'artist': 'Black Shadow',
 604                 'track': 'Война - Негасимое Бездны Пламя!',
 605             },
 606         }],
 607         'params': {
 608             'skip_download': True,
 609         },
 610     }, {
 611         # single YouTube embed with irrelevant reaction videos
 612         'url': 'https://vk.com/wall-32370614_7173954',
 613         'info_dict': {
 614             'id': '-32370614_7173954',
 615             'title': 'md5:9f93c405bbc00061d34007d78c75e3bc',
 616             'description': 'md5:953b811f26fa9f21ee5856e2ea8e68fc',
 617         },
 618         'playlist_count': 1,
 619     }, {
 620         # wall page URL
 621         'url': 'https://vk.com/wall-23538238_35',
 622         'only_matching': True,
 623     }, {
 624         # mobile wall page URL
 625         'url': 'https://m.vk.com/wall-23538238_35',
 626         'only_matching': True,
 627     }]
 628     _BASE64_CHARS = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMN0PQRSTUVWXYZO123456789+/='
 629     _AUDIO = collections.namedtuple('Audio', ['id', 'owner_id', 'url', 'title', 'performer', 'duration', 'album_id', 'unk', 'author_link', 'lyrics', 'flags', 'context', 'extra', 'hashes', 'cover_url', 'ads'])
 630
 631     def _decode(self, enc):
 632         dec = ''
 633         e = n = 0
 634         for c in enc:
 635             r = self._BASE64_CHARS.index(c)
 636             cond = n % 4
 637             e = 64 * e + r if cond else r
 638             n += 1
 639             if cond:
 640                 dec += chr(255 & e >> (-2 * n & 6))
 641         return dec
 642
 643     def _unmask_url(self, mask_url, vk_id):
 644         if 'audio_api_unavailable' in mask_url:
 645             extra = mask_url.split('?extra=')[1].split('#')
 646             func, base = self._decode(extra[1]).split(chr(11))
 647             mask_url = list(self._decode(extra[0]))
 648             url_len = len(mask_url)
 649             indexes = [None] * url_len
 650             index = int(base) ^ vk_id
 651             for n in range(url_len - 1, -1, -1):
 652                 index = (url_len * (n + 1) ^ index + n) % url_len
 653                 indexes[n] = index
 654             for n in range(1, url_len):
 655                 c = mask_url[n]
 656                 index = indexes[url_len - 1 - n]
 657                 mask_url[n] = mask_url[index]
 658                 mask_url[index] = c
 659             mask_url = ''.join(mask_url)
 660         return mask_url
 661
 662     def _real_extract(self, url):
 663         post_id = self._match_id(url)
 664
 665         webpage = self._download_payload('wkview', post_id, {
 666             'act': 'show',
 667             'w': 'wall' + post_id,
 668         })[1]
 669
 670         uploader = clean_html(get_element_by_class('PostHeaderTitle__authorName', webpage))
 671
 672         entries = []
 673
 674         for audio in re.findall(r'data-audio="([^"]+)', webpage):
 675             audio = self._parse_json(unescapeHTML(audio), post_id)
 676             if not audio['url']:
 677                 continue
 678             title = unescapeHTML(audio.get('title'))
 679             artist = unescapeHTML(audio.get('artist'))
 680             entries.append({
 681                 'id': f'{audio["owner_id"]}_{audio["id"]}',
 682                 'title': join_nonempty(artist, title, delim=' - '),
 683                 'thumbnails': try_call(lambda: [{'url': u} for u in audio['coverUrl'].split(',')]),
 684                 'duration': int_or_none(audio.get('duration')),
 685                 'uploader': uploader,
 686                 'artist': artist,
 687                 'track': title,
 688                 'formats': [{
 689                     'url': audio['url'],
 690                     'ext': 'm4a',
 691                     'vcodec': 'none',
 692                     'acodec': 'mp3',
 693                     'container': 'm4a_dash',
 694                 }],
 695             })
 696
 697         entries.extend(self.url_result(urljoin(url, entry), VKIE) for entry in set(re.findall(
 698             r'<a[^>]+href=(?:["\'])(/video(?:-?[\d_]+)[^"\']*)',
 699             get_element_html_by_id('wl_post_body', webpage))))
 700
 701         return self.playlist_result(
 702             entries, post_id, join_nonempty(uploader, f'Wall post {post_id}', delim=' - '),
 703             clean_html(get_element_by_class('wall_post_text', webpage)))