yt_dlp/extractor/vk.py

   1 # coding: utf-8
   2 from __future__ import unicode_literals
   3
   4 import collections
   5 import re
   6
   7 from .common import InfoExtractor
   8 from ..compat import compat_urlparse
   9 from ..utils import (
  10     clean_html,
  11     ExtractorError,
  12     get_element_by_class,
  13     int_or_none,
  14     orderedSet,
  15     str_or_none,
  16     str_to_int,
  17     unescapeHTML,
  18     unified_timestamp,
  19     url_or_none,
  20     urlencode_postdata,
  21 )
  22 from .dailymotion import DailymotionIE
  23 from .odnoklassniki import OdnoklassnikiIE
  24 from .pladform import PladformIE
  25 from .vimeo import VimeoIE
  26 from .youtube import YoutubeIE
  27
  28
  29 class VKBaseIE(InfoExtractor):
  30     _NETRC_MACHINE = 'vk'
  31
  32     def _perform_login(self, username, password):
  33         login_page, url_handle = self._download_webpage_handle(
  34             'https://vk.com', None, 'Downloading login page')
  35
  36         login_form = self._hidden_inputs(login_page)
  37
  38         login_form.update({
  39             'email': username.encode('cp1251'),
  40             'pass': password.encode('cp1251'),
  41         })
  42
  43         # vk serves two same remixlhk cookies in Set-Cookie header and expects
  44         # first one to be actually set
  45         self._apply_first_set_cookie_header(url_handle, 'remixlhk')
  46
  47         login_page = self._download_webpage(
  48             'https://vk.com/login', None,
  49             note='Logging in',
  50             data=urlencode_postdata(login_form))
  51
  52         if re.search(r'onLoginFailed', login_page):
  53             raise ExtractorError(
  54                 'Unable to login, incorrect username and/or password', expected=True)
  55
  56     def _download_payload(self, path, video_id, data, fatal=True):
  57         data['al'] = 1
  58         code, payload = self._download_json(
  59             'https://vk.com/%s.php' % path, video_id,
  60             data=urlencode_postdata(data), fatal=fatal,
  61             headers={'X-Requested-With': 'XMLHttpRequest'})['payload']
  62         if code == '3':
  63             self.raise_login_required()
  64         elif code == '8':
  65             raise ExtractorError(clean_html(payload[0][1:-1]), expected=True)
  66         return payload
  67
  68
  69 class VKIE(VKBaseIE):
  70     IE_NAME = 'vk'
  71     IE_DESC = 'VK'
  72     _VALID_URL = r'''(?x)
  73                     https?://
  74                         (?:
  75                             (?:
  76                                 (?:(?:m|new)\.)?vk\.com/video_|
  77                                 (?:www\.)?daxab.com/
  78                             )
  79                             ext\.php\?(?P<embed_query>.*?\boid=(?P<oid>-?\d+).*?\bid=(?P<id>\d+).*)|
  80                             (?:
  81                                 (?:(?:m|new)\.)?vk\.com/(?:.+?\?.*?z=)?(?:video|clip)|
  82                                 (?:www\.)?daxab.com/embed/
  83                             )
  84                             (?P<videoid>-?\d+_\d+)(?:.*\blist=(?P<list_id>([\da-f]+)|(ln-[\da-zA-Z]+)))?
  85                         )
  86                     '''
  87     _TESTS = [
  88         {
  89             'url': 'http://vk.com/videos-77521?z=video-77521_162222515%2Fclub77521',
  90             'md5': '7babad3b85ea2e91948005b1b8b0cb84',
  91             'info_dict': {
  92                 'id': '-77521_162222515',
  93                 'ext': 'mp4',
  94                 'title': 'ProtivoGunz - Хуёвая песня',
  95                 'uploader': 're:(?:Noize MC|Alexander Ilyashenko).*',
  96                 'uploader_id': '-77521',
  97                 'duration': 195,
  98                 'timestamp': 1329049880,
  99                 'upload_date': '20120212',
 100             },
 101         },
 102         {
 103             'url': 'http://vk.com/video205387401_165548505',
 104             'info_dict': {
 105                 'id': '205387401_165548505',
 106                 'ext': 'mp4',
 107                 'title': 'No name',
 108                 'uploader': 'Tom Cruise',
 109                 'uploader_id': '205387401',
 110                 'duration': 9,
 111                 'timestamp': 1374364108,
 112                 'upload_date': '20130720',
 113             }
 114         },
 115         {
 116             'note': 'Embedded video',
 117             'url': 'https://vk.com/video_ext.php?oid=-77521&id=162222515&hash=87b046504ccd8bfa',
 118             'md5': '7babad3b85ea2e91948005b1b8b0cb84',
 119             'info_dict': {
 120                 'id': '-77521_162222515',
 121                 'ext': 'mp4',
 122                 'uploader': 're:(?:Noize MC|Alexander Ilyashenko).*',
 123                 'title': 'ProtivoGunz - Хуёвая песня',
 124                 'duration': 195,
 125                 'upload_date': '20120212',
 126                 'timestamp': 1329049880,
 127                 'uploader_id': '-77521',
 128             },
 129         },
 130         {
 131             # VIDEO NOW REMOVED
 132             # please update if you find a video whose URL follows the same pattern
 133             'url': 'http://vk.com/video-8871596_164049491',
 134             'md5': 'a590bcaf3d543576c9bd162812387666',
 135             'note': 'Only available for registered users',
 136             'info_dict': {
 137                 'id': '-8871596_164049491',
 138                 'ext': 'mp4',
 139                 'uploader': 'Триллеры',
 140                 'title': '► Бойцовский клуб / Fight Club 1999 [HD 720]',
 141                 'duration': 8352,
 142                 'upload_date': '20121218',
 143                 'view_count': int,
 144             },
 145             'skip': 'Removed',
 146         },
 147         {
 148             'url': 'http://vk.com/hd_kino_mania?z=video-43215063_168067957%2F15c66b9b533119788d',
 149             'info_dict': {
 150                 'id': '-43215063_168067957',
 151                 'ext': 'mp4',
 152                 'uploader': 'Bro Mazter',
 153                 'title': ' ',
 154                 'duration': 7291,
 155                 'upload_date': '20140328',
 156                 'uploader_id': '223413403',
 157                 'timestamp': 1396018030,
 158             },
 159             'skip': 'Requires vk account credentials',
 160         },
 161         {
 162             'url': 'http://m.vk.com/video-43215063_169084319?list=125c627d1aa1cebb83&from=wall-43215063_2566540',
 163             'md5': '0c45586baa71b7cb1d0784ee3f4e00a6',
 164             'note': 'ivi.ru embed',
 165             'info_dict': {
 166                 'id': '-43215063_169084319',
 167                 'ext': 'mp4',
 168                 'title': 'Книга Илая',
 169                 'duration': 6771,
 170                 'upload_date': '20140626',
 171                 'view_count': int,
 172             },
 173             'skip': 'Removed',
 174         },
 175         {
 176             'url': 'https://vk.com/video-93049196_456239755?list=ln-cBjJ7S4jYYx3ADnmDT',
 177             'info_dict': {
 178                 'id': '-93049196_456239755',
 179                 'ext': 'mp4',
 180                 'title': '8 серия (озвучка)',
 181                 'duration': 8383,
 182                 'upload_date': '20211222',
 183                 'view_count': int,
 184             },
 185         },
 186         {
 187             # video (removed?) only available with list id
 188             'url': 'https://vk.com/video30481095_171201961?list=8764ae2d21f14088d4',
 189             'md5': '091287af5402239a1051c37ec7b92913',
 190             'info_dict': {
 191                 'id': '30481095_171201961',
 192                 'ext': 'mp4',
 193                 'title': 'ТюменцевВВ_09.07.2015',
 194                 'uploader': 'Anton Ivanov',
 195                 'duration': 109,
 196                 'upload_date': '20150709',
 197                 'view_count': int,
 198             },
 199             'skip': 'Removed',
 200         },
 201         {
 202             # youtube embed
 203             'url': 'https://vk.com/video276849682_170681728',
 204             'info_dict': {
 205                 'id': 'V3K4mi0SYkc',
 206                 'ext': 'mp4',
 207                 'title': "DSWD Awards 'Children's Joy Foundation, Inc.' Certificate of Registration and License to Operate",
 208                 'description': 'md5:bf9c26cfa4acdfb146362682edd3827a',
 209                 'duration': 178,
 210                 'upload_date': '20130116',
 211                 'uploader': "Children's Joy Foundation Inc.",
 212                 'uploader_id': 'thecjf',
 213                 'view_count': int,
 214             },
 215         },
 216         {
 217             # dailymotion embed
 218             'url': 'https://vk.com/video-37468416_456239855',
 219             'info_dict': {
 220                 'id': 'k3lz2cmXyRuJQSjGHUv',
 221                 'ext': 'mp4',
 222                 'title': 'md5:d52606645c20b0ddbb21655adaa4f56f',
 223                 'description': 'md5:424b8e88cc873217f520e582ba28bb36',
 224                 'uploader': 'AniLibria.Tv',
 225                 'upload_date': '20160914',
 226                 'uploader_id': 'x1p5vl5',
 227                 'timestamp': 1473877246,
 228             },
 229             'params': {
 230                 'skip_download': True,
 231             },
 232         },
 233         {
 234             # video key is extra_data not url\d+
 235             'url': 'http://vk.com/video-110305615_171782105',
 236             'md5': 'e13fcda136f99764872e739d13fac1d1',
 237             'info_dict': {
 238                 'id': '-110305615_171782105',
 239                 'ext': 'mp4',
 240                 'title': 'S-Dance, репетиции к The way show',
 241                 'uploader': 'THE WAY SHOW | 17 апреля',
 242                 'uploader_id': '-110305615',
 243                 'timestamp': 1454859345,
 244                 'upload_date': '20160207',
 245             },
 246             'params': {
 247                 'skip_download': True,
 248             },
 249         },
 250         {
 251             # finished live stream, postlive_mp4
 252             'url': 'https://vk.com/videos-387766?z=video-387766_456242764%2Fpl_-387766_-2',
 253             'info_dict': {
 254                 'id': '-387766_456242764',
 255                 'ext': 'mp4',
 256                 'title': 'ИгроМир 2016 День 1 — Игромания Утром',
 257                 'uploader': 'Игромания',
 258                 'duration': 5239,
 259                 # TODO: use act=show to extract view_count
 260                 # 'view_count': int,
 261                 'upload_date': '20160929',
 262                 'uploader_id': '-387766',
 263                 'timestamp': 1475137527,
 264             },
 265             'params': {
 266                 'skip_download': True,
 267             },
 268         },
 269         {
 270             # live stream, hls and rtmp links, most likely already finished live
 271             # stream by the time you are reading this comment
 272             'url': 'https://vk.com/video-140332_456239111',
 273             'only_matching': True,
 274         },
 275         {
 276             # removed video, just testing that we match the pattern
 277             'url': 'http://vk.com/feed?z=video-43215063_166094326%2Fbb50cacd3177146d7a',
 278             'only_matching': True,
 279         },
 280         {
 281             # age restricted video, requires vk account credentials
 282             'url': 'https://vk.com/video205387401_164765225',
 283             'only_matching': True,
 284         },
 285         {
 286             # pladform embed
 287             'url': 'https://vk.com/video-76116461_171554880',
 288             'only_matching': True,
 289         },
 290         {
 291             'url': 'http://new.vk.com/video205387401_165548505',
 292             'only_matching': True,
 293         },
 294         {
 295             # This video is no longer available, because its author has been blocked.
 296             'url': 'https://vk.com/video-10639516_456240611',
 297             'only_matching': True,
 298         },
 299         {
 300             # The video is not available in your region.
 301             'url': 'https://vk.com/video-51812607_171445436',
 302             'only_matching': True,
 303         },
 304         {
 305             'url': 'https://vk.com/clip30014565_456240946',
 306             'only_matching': True,
 307         }]
 308
 309     @staticmethod
 310     def _extract_sibnet_urls(webpage):
 311         # https://help.sibnet.ru/?sibnet_video_embed
 312         return [unescapeHTML(mobj.group('url')) for mobj in re.finditer(
 313             r'<iframe\b[^>]+\bsrc=(["\'])(?P<url>(?:https?:)?//video\.sibnet\.ru/shell\.php\?.*?\bvideoid=\d+.*?)\1',
 314             webpage)]
 315
 316     def _real_extract(self, url):
 317         mobj = self._match_valid_url(url)
 318         video_id = mobj.group('videoid')
 319
 320         mv_data = {}
 321         if video_id:
 322             data = {
 323                 'act': 'show_inline',
 324                 'video': video_id,
 325             }
 326             # Some videos (removed?) can only be downloaded with list id specified
 327             list_id = mobj.group('list_id')
 328             if list_id:
 329                 data['list'] = list_id
 330
 331             payload = self._download_payload('al_video', video_id, data)
 332             info_page = payload[1]
 333             opts = payload[-1]
 334             mv_data = opts.get('mvData') or {}
 335             player = opts.get('player') or {}
 336         else:
 337             video_id = '%s_%s' % (mobj.group('oid'), mobj.group('id'))
 338
 339             info_page = self._download_webpage(
 340                 'http://vk.com/video_ext.php?' + mobj.group('embed_query'), video_id)
 341
 342             error_message = self._html_search_regex(
 343                 [r'(?s)<!><div[^>]+class="video_layer_message"[^>]*>(.+?)</div>',
 344                     r'(?s)<div[^>]+id="video_ext_msg"[^>]*>(.+?)</div>'],
 345                 info_page, 'error message', default=None)
 346             if error_message:
 347                 raise ExtractorError(error_message, expected=True)
 348
 349             if re.search(r'<!>/login\.php\?.*\bact=security_check', info_page):
 350                 raise ExtractorError(
 351                     'You are trying to log in from an unusual location. You should confirm ownership at vk.com to log in with this IP.',
 352                     expected=True)
 353
 354             ERROR_COPYRIGHT = 'Video %s has been removed from public access due to rightholder complaint.'
 355
 356             ERRORS = {
 357                 r'>Видеозапись .*? была изъята из публичного доступа в связи с обращением правообладателя.<':
 358                 ERROR_COPYRIGHT,
 359
 360                 r'>The video .*? was removed from public access by request of the copyright holder.<':
 361                 ERROR_COPYRIGHT,
 362
 363                 r'<!>Please log in or <':
 364                 'Video %s is only available for registered users, '
 365                 'use --username and --password options to provide account credentials.',
 366
 367                 r'<!>Unknown error':
 368                 'Video %s does not exist.',
 369
 370                 r'<!>Видео временно недоступно':
 371                 'Video %s is temporarily unavailable.',
 372
 373                 r'<!>Access denied':
 374                 'Access denied to video %s.',
 375
 376                 r'<!>Видеозапись недоступна, так как её автор был заблокирован.':
 377                 'Video %s is no longer available, because its author has been blocked.',
 378
 379                 r'<!>This video is no longer available, because its author has been blocked.':
 380                 'Video %s is no longer available, because its author has been blocked.',
 381
 382                 r'<!>This video is no longer available, because it has been deleted.':
 383                 'Video %s is no longer available, because it has been deleted.',
 384
 385                 r'<!>The video .+? is not available in your region.':
 386                 'Video %s is not available in your region.',
 387             }
 388
 389             for error_re, error_msg in ERRORS.items():
 390                 if re.search(error_re, info_page):
 391                     raise ExtractorError(error_msg % video_id, expected=True)
 392
 393             player = self._parse_json(self._search_regex(
 394                 r'var\s+playerParams\s*=\s*({.+?})\s*;\s*\n',
 395                 info_page, 'player params'), video_id)
 396
 397         youtube_url = YoutubeIE._extract_url(info_page)
 398         if youtube_url:
 399             return self.url_result(youtube_url, YoutubeIE.ie_key())
 400
 401         vimeo_url = VimeoIE._extract_url(url, info_page)
 402         if vimeo_url is not None:
 403             return self.url_result(vimeo_url, VimeoIE.ie_key())
 404
 405         pladform_url = PladformIE._extract_url(info_page)
 406         if pladform_url:
 407             return self.url_result(pladform_url, PladformIE.ie_key())
 408
 409         m_rutube = re.search(
 410             r'\ssrc="((?:https?:)?//rutube\.ru\\?/(?:video|play)\\?/embed(?:.*?))\\?"', info_page)
 411         if m_rutube is not None:
 412             rutube_url = self._proto_relative_url(
 413                 m_rutube.group(1).replace('\\', ''))
 414             return self.url_result(rutube_url)
 415
 416         dailymotion_urls = DailymotionIE._extract_urls(info_page)
 417         if dailymotion_urls:
 418             return self.url_result(dailymotion_urls[0], DailymotionIE.ie_key())
 419
 420         odnoklassniki_url = OdnoklassnikiIE._extract_url(info_page)
 421         if odnoklassniki_url:
 422             return self.url_result(odnoklassniki_url, OdnoklassnikiIE.ie_key())
 423
 424         sibnet_urls = self._extract_sibnet_urls(info_page)
 425         if sibnet_urls:
 426             return self.url_result(sibnet_urls[0])
 427
 428         m_opts = re.search(r'(?s)var\s+opts\s*=\s*({.+?});', info_page)
 429         if m_opts:
 430             m_opts_url = re.search(r"url\s*:\s*'((?!/\b)[^']+)", m_opts.group(1))
 431             if m_opts_url:
 432                 opts_url = m_opts_url.group(1)
 433                 if opts_url.startswith('//'):
 434                     opts_url = 'http:' + opts_url
 435                 return self.url_result(opts_url)
 436
 437         data = player['params'][0]
 438         title = unescapeHTML(data['md_title'])
 439
 440         # 2 = live
 441         # 3 = post live (finished live)
 442         is_live = data.get('live') == 2
 443
 444         timestamp = unified_timestamp(self._html_search_regex(
 445             r'class=["\']mv_info_date[^>]+>([^<]+)(?:<|from)', info_page,
 446             'upload date', default=None)) or int_or_none(data.get('date'))
 447
 448         view_count = str_to_int(self._search_regex(
 449             r'class=["\']mv_views_count[^>]+>\s*([\d,.]+)',
 450             info_page, 'view count', default=None))
 451
 452         formats = []
 453         for format_id, format_url in data.items():
 454             format_url = url_or_none(format_url)
 455             if not format_url or not format_url.startswith(('http', '//', 'rtmp')):
 456                 continue
 457             if (format_id.startswith(('url', 'cache'))
 458                     or format_id in ('extra_data', 'live_mp4', 'postlive_mp4')):
 459                 height = int_or_none(self._search_regex(
 460                     r'^(?:url|cache)(\d+)', format_id, 'height', default=None))
 461                 formats.append({
 462                     'format_id': format_id,
 463                     'url': format_url,
 464                     'height': height,
 465                 })
 466             elif format_id == 'hls':
 467                 formats.extend(self._extract_m3u8_formats(
 468                     format_url, video_id, 'mp4', 'm3u8_native',
 469                     m3u8_id=format_id, fatal=False, live=is_live))
 470             elif format_id == 'rtmp':
 471                 formats.append({
 472                     'format_id': format_id,
 473                     'url': format_url,
 474                     'ext': 'flv',
 475                 })
 476         self._sort_formats(formats)
 477
 478         subtitles = {}
 479         for sub in data.get('subs') or {}:
 480             subtitles.setdefault(sub.get('lang', 'en'), []).append({
 481                 'ext': sub.get('title', '.srt').split('.')[-1],
 482                 'url': url_or_none(sub.get('url')),
 483             })
 484
 485         return {
 486             'id': video_id,
 487             'formats': formats,
 488             'title': title,
 489             'thumbnail': data.get('jpg'),
 490             'uploader': data.get('md_author'),
 491             'uploader_id': str_or_none(data.get('author_id') or mv_data.get('authorId')),
 492             'duration': int_or_none(data.get('duration') or mv_data.get('duration')),
 493             'timestamp': timestamp,
 494             'view_count': view_count,
 495             'like_count': int_or_none(mv_data.get('likes')),
 496             'comment_count': int_or_none(mv_data.get('commcount')),
 497             'is_live': is_live,
 498             'subtitles': subtitles,
 499         }
 500
 501
 502 class VKUserVideosIE(VKBaseIE):
 503     IE_NAME = 'vk:uservideos'
 504     IE_DESC = "VK - User's Videos"
 505     _VALID_URL = r'https?://(?:(?:m|new)\.)?vk\.com/video/@(?P<id>[^?$#/&]+)(?!\?.*\bz=video)(?:[/?#&](?:.*?\bsection=(?P<section>\w+))?|$)'
 506     _TEMPLATE_URL = 'https://vk.com/videos'
 507     _TESTS = [{
 508         'url': 'https://vk.com/video/@mobidevices',
 509         'info_dict': {
 510             'id': '-17892518_all',
 511         },
 512         'playlist_mincount': 1355,
 513     }, {
 514         'url': 'https://vk.com/video/@mobidevices?section=uploaded',
 515         'info_dict': {
 516             'id': '-17892518_uploaded',
 517         },
 518         'playlist_mincount': 182,
 519     }]
 520     _VIDEO = collections.namedtuple('Video', ['owner_id', 'id'])
 521
 522     def _entries(self, page_id, section):
 523         video_list_json = self._download_payload('al_video', page_id, {
 524             'act': 'load_videos_silent',
 525             'offset': 0,
 526             'oid': page_id,
 527             'section': section,
 528         })[0][section]
 529         count = video_list_json['count']
 530         total = video_list_json['total']
 531         video_list = video_list_json['list']
 532
 533         while True:
 534             for video in video_list:
 535                 v = self._VIDEO._make(video[:2])
 536                 video_id = '%d_%d' % (v.owner_id, v.id)
 537                 yield self.url_result(
 538                     'http://vk.com/video' + video_id, VKIE.ie_key(), video_id)
 539             if count >= total:
 540                 break
 541             video_list_json = self._download_payload('al_video', page_id, {
 542                 'act': 'load_videos_silent',
 543                 'offset': count,
 544                 'oid': page_id,
 545                 'section': section,
 546             })[0][section]
 547             count += video_list_json['count']
 548             video_list = video_list_json['list']
 549
 550     def _real_extract(self, url):
 551         u_id, section = self._match_valid_url(url).groups()
 552         webpage = self._download_webpage(url, u_id)
 553         page_id = self._search_regex(r'data-owner-id\s?=\s?"([^"]+)"', webpage, 'page_id')
 554         if not section:
 555             section = 'all'
 556
 557         return self.playlist_result(self._entries(page_id, section), '%s_%s' % (page_id, section))
 558
 559
 560 class VKWallPostIE(VKBaseIE):
 561     IE_NAME = 'vk:wallpost'
 562     _VALID_URL = r'https?://(?:(?:(?:(?:m|new)\.)?vk\.com/(?:[^?]+\?.*\bw=)?wall(?P<id>-?\d+_\d+)))'
 563     _TESTS = [{
 564         # public page URL, audio playlist
 565         'url': 'https://vk.com/bs.official?w=wall-23538238_35',
 566         'info_dict': {
 567             'id': '-23538238_35',
 568             'title': 'Black Shadow - Wall post -23538238_35',
 569             'description': 'md5:3f84b9c4f9ef499731cf1ced9998cc0c',
 570         },
 571         'playlist': [{
 572             'md5': '5ba93864ec5b85f7ce19a9af4af080f6',
 573             'info_dict': {
 574                 'id': '135220665_111806521',
 575                 'ext': 'mp4',
 576                 'title': 'Black Shadow - Слепое Верование',
 577                 'duration': 370,
 578                 'uploader': 'Black Shadow',
 579                 'artist': 'Black Shadow',
 580                 'track': 'Слепое Верование',
 581             },
 582         }, {
 583             'md5': '4cc7e804579122b17ea95af7834c9233',
 584             'info_dict': {
 585                 'id': '135220665_111802303',
 586                 'ext': 'mp4',
 587                 'title': 'Black Shadow - Война - Негасимое Бездны Пламя!',
 588                 'duration': 423,
 589                 'uploader': 'Black Shadow',
 590                 'artist': 'Black Shadow',
 591                 'track': 'Война - Негасимое Бездны Пламя!',
 592             },
 593         }],
 594         'params': {
 595             'skip_download': True,
 596             'usenetrc': True,
 597         },
 598         'skip': 'Requires vk account credentials',
 599     }, {
 600         # single YouTube embed, no leading -
 601         'url': 'https://vk.com/wall85155021_6319',
 602         'info_dict': {
 603             'id': '85155021_6319',
 604             'title': 'Сергей Горбунов - Wall post 85155021_6319',
 605         },
 606         'playlist_count': 1,
 607         'params': {
 608             'usenetrc': True,
 609         },
 610         'skip': 'Requires vk account credentials',
 611     }, {
 612         # wall page URL
 613         'url': 'https://vk.com/wall-23538238_35',
 614         'only_matching': True,
 615     }, {
 616         # mobile wall page URL
 617         'url': 'https://m.vk.com/wall-23538238_35',
 618         'only_matching': True,
 619     }]
 620     _BASE64_CHARS = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMN0PQRSTUVWXYZO123456789+/='
 621     _AUDIO = collections.namedtuple('Audio', ['id', 'owner_id', 'url', 'title', 'performer', 'duration', 'album_id', 'unk', 'author_link', 'lyrics', 'flags', 'context', 'extra', 'hashes', 'cover_url', 'ads'])
 622
 623     def _decode(self, enc):
 624         dec = ''
 625         e = n = 0
 626         for c in enc:
 627             r = self._BASE64_CHARS.index(c)
 628             cond = n % 4
 629             e = 64 * e + r if cond else r
 630             n += 1
 631             if cond:
 632                 dec += chr(255 & e >> (-2 * n & 6))
 633         return dec
 634
 635     def _unmask_url(self, mask_url, vk_id):
 636         if 'audio_api_unavailable' in mask_url:
 637             extra = mask_url.split('?extra=')[1].split('#')
 638             func, base = self._decode(extra[1]).split(chr(11))
 639             mask_url = list(self._decode(extra[0]))
 640             url_len = len(mask_url)
 641             indexes = [None] * url_len
 642             index = int(base) ^ vk_id
 643             for n in range(url_len - 1, -1, -1):
 644                 index = (url_len * (n + 1) ^ index + n) % url_len
 645                 indexes[n] = index
 646             for n in range(1, url_len):
 647                 c = mask_url[n]
 648                 index = indexes[url_len - 1 - n]
 649                 mask_url[n] = mask_url[index]
 650                 mask_url[index] = c
 651             mask_url = ''.join(mask_url)
 652         return mask_url
 653
 654     def _real_extract(self, url):
 655         post_id = self._match_id(url)
 656
 657         webpage = self._download_payload('wkview', post_id, {
 658             'act': 'show',
 659             'w': 'wall' + post_id,
 660         })[1]
 661
 662         description = clean_html(get_element_by_class('wall_post_text', webpage))
 663         uploader = clean_html(get_element_by_class('author', webpage))
 664
 665         entries = []
 666
 667         for audio in re.findall(r'data-audio="([^"]+)', webpage):
 668             audio = self._parse_json(unescapeHTML(audio), post_id)
 669             a = self._AUDIO._make(audio[:16])
 670             if not a.url:
 671                 continue
 672             title = unescapeHTML(a.title)
 673             performer = unescapeHTML(a.performer)
 674             entries.append({
 675                 'id': '%s_%s' % (a.owner_id, a.id),
 676                 'url': self._unmask_url(a.url, a.ads['vk_id']),
 677                 'title': '%s - %s' % (performer, title) if performer else title,
 678                 'thumbnails': [{'url': c_url} for c_url in a.cover_url.split(',')] if a.cover_url else None,
 679                 'duration': int_or_none(a.duration),
 680                 'uploader': uploader,
 681                 'artist': performer,
 682                 'track': title,
 683                 'ext': 'mp4',
 684                 'protocol': 'm3u8_native',
 685             })
 686
 687         for video in re.finditer(
 688                 r'<a[^>]+href=(["\'])(?P<url>/video(?:-?[\d_]+).*?)\1', webpage):
 689             entries.append(self.url_result(
 690                 compat_urlparse.urljoin(url, video.group('url')), VKIE.ie_key()))
 691
 692         title = 'Wall post %s' % post_id
 693
 694         return self.playlist_result(
 695             orderedSet(entries), post_id,
 696             '%s - %s' % (uploader, title) if uploader else title,
 697             description)