text: # coding: utf-8
  from __future__ import unicode_literals
  
  import itertools
  import re
  
  from .common import InfoExtractor
  from ..utils import (
      determine_ext,
      int_or_none,
      try_get,
      url_or_none,
  )
  
  
  class YandexVideoIE(InfoExtractor):
      _VALID_URL = r'''(?x)
                      https?://
                          (?:
                              yandex\.ru(?:/(?:portal/(?:video|efir)|efir))?/?\?.*?stream_id=|
                              frontend\.vh\.yandex\.ru/player/
                          )
                          (?P<id>(?:[\da-f]{32}|[\w-]{12}))
                      '''
      _TESTS = [{
          'url': 'https://yandex.ru/portal/video?stream_id=4dbb36ec4e0526d58f9f2dc8f0ecf374',
          'md5': 'e02a05bfaf0d9615ef07ae3a10f4faf4',
          'info_dict': {
              'id': '4dbb36ec4e0526d58f9f2dc8f0ecf374',
              'ext': 'mp4',
              'title': 'Русский Вудсток - главный рок-фест в истории СССР / вДудь',
              'description': 'md5:7d6b8d4bc4a3b9a56499916c1ea5b5fa',
              'thumbnail': r're:^https?://',
              'timestamp': 1549972939,
              'duration': 5575,
              'age_limit': 18,
              'upload_date': '20190212',
              'view_count': int,
              'like_count': int,
              'dislike_count': int,
          },
      }, {
          'url': 'https://yandex.ru/portal/efir?stream_id=4dbb262b4fe5cf15a215de4f34eee34d&from=morda',
          'only_matching': True,
      }, {
          'url': 'https://yandex.ru/?stream_id=4dbb262b4fe5cf15a215de4f34eee34d',
          'only_matching': True,
      }, {
          'url': 'https://frontend.vh.yandex.ru/player/4dbb262b4fe5cf15a215de4f34eee34d?from=morda',
          'only_matching': True,
      }, {
          # vod-episode, series episode
          'url': 'https://yandex.ru/portal/video?stream_id=45b11db6e4b68797919c93751a938cee',
          'only_matching': True,
      }, {
          # episode, sports
          'url': 'https://yandex.ru/?stream_channel=1538487871&stream_id=4132a07f71fb0396be93d74b3477131d',
          'only_matching': True,
      }, {
          # DASH with DRM
          'url': 'https://yandex.ru/portal/video?from=morda&stream_id=485a92d94518d73a9d0ff778e13505f8',
          'only_matching': True,
      }, {
          'url': 'https://yandex.ru/efir?stream_active=watching&stream_id=v7a2dZ-v5mSI&from_block=efir_newtab',
          'only_matching': True,
      }]
  
      def _real_extract(self, url):
          video_id = self._match_id(url)
  
          player = try_get((self._download_json(
              'https://frontend.vh.yandex.ru/graphql', video_id, data=('''{
    player(content_id: "%s") {
      computed_title
      content_url
      description
      dislikes
      duration
      likes
      program_title
      release_date
      release_date_ut
      release_year
      restriction_age
      season
      start_time
      streams
      thumbnail
      title
      views_count
    }
  }''' % video_id).encode(), fatal=False)), lambda x: x['player']['content'])
          if not player or player.get('error'):
              player = self._download_json(
                  'https://frontend.vh.yandex.ru/v23/player/%s.json' % video_id,
                  video_id, query={
                      'stream_options': 'hires',
                      'disable_trackings': 1,
                  })
          content = player['content']
  
          title = content.get('title') or content['computed_title']
  
          formats = []
          streams = content.get('streams') or []
          streams.append({'url': content.get('content_url')})
          for stream in streams:
              content_url = url_or_none(stream.get('url'))
              if not content_url:
                  continue
              ext = determine_ext(content_url)
              if ext == 'ismc':
                  continue
              elif ext == 'm3u8':
                  formats.extend(self._extract_m3u8_formats(
                      content_url, video_id, 'mp4',
                      'm3u8_native', m3u8_id='hls', fatal=False))
              elif ext == 'mpd':
                  formats.extend(self._extract_mpd_formats(
                      content_url, video_id, mpd_id='dash', fatal=False))
              else:
                  formats.append({'url': content_url})
  
          self._sort_formats(formats)
  
          timestamp = (int_or_none(content.get('release_date'))
                       or int_or_none(content.get('release_date_ut'))
                       or int_or_none(content.get('start_time')))
          season = content.get('season') or {}
  
          return {
              'id': video_id,
              'title': title,
              'description': content.get('description'),
              'thumbnail': content.get('thumbnail'),
              'timestamp': timestamp,
              'duration': int_or_none(content.get('duration')),
              'series': content.get('program_title'),
              'age_limit': int_or_none(content.get('restriction_age')),
              'view_count': int_or_none(content.get('views_count')),
              'like_count': int_or_none(content.get('likes')),
              'dislike_count': int_or_none(content.get('dislikes')),
              'season_number': int_or_none(season.get('season_number')),
              'season_id': season.get('id'),
              'release_year': int_or_none(content.get('release_year')),
              'formats': formats,
          }
  
  
  class ZenYandexIE(InfoExtractor):
      _VALID_URL = r'https?://zen\.yandex\.ru/media/(?:id/[^/]+/|[^/]+/)(?:[a-z0-9-]+)-(?P<id>[a-z0-9-]+)'
      _TESTS = [{
          'url': 'https://zen.yandex.ru/media/popmech/izverjenie-vulkana-iz-spichek-zreliscnyi-opyt-6002240ff8b1af50bb2da5e3',
          'info_dict': {
              'id': '6002240ff8b1af50bb2da5e3',
              'ext': 'mp4',
              'title': 'Извержение вулкана из спичек: зрелищный опыт',
              'description': 'md5:053ad3c61b5596d510c9a199dc8ee633',
              'thumbnail': 'https://avatars.mds.yandex.net/get-zen-pub-og/3558619/pub_6002240ff8b1af50bb2da5e3_600bad814d953e4132a30b5e/orig',
              'uploader': 'Популярная механика',
          },
      }, {
          'url': 'https://zen.yandex.ru/media/id/606fd806cc13cb3c58c05cf5/vot-eto-focus-dedy-morozy-na-gidrociklah-60c7c443da18892ebfe85ed7',
          'info_dict': {
              'id': '60c7c443da18892ebfe85ed7',
              'ext': 'mp4',
              'title': 'ВОТ ЭТО Focus. Деды Морозы на гидроциклах',
              'description': 'md5:8684912f6086f298f8078d4af0e8a600',
              'thumbnail': 'https://avatars.mds.yandex.net/get-zen-pub-og/4410519/pub_60c7c443da18892ebfe85ed7_60c7c48e060a163121f42cc3/orig',
              'uploader': 'AcademeG DailyStream'
          },
      }, {
          'url': 'https://zen.yandex.ru/media/id/606fd806cc13cb3c58c05cf5/novyi-samsung-fold-3-moskvich-barahlit-612f93b7f8d48e7e945792a2?from=channel&rid=2286618386.482.1630817595976.42360',
          'only_matching': True,
      }]
  
      def _real_extract(self, url):
          id = self._match_id(url)
          webpage = self._download_webpage(url, id)
          data_json = self._parse_json(self._search_regex(r'w\._data\s?=\s?({.+?});', webpage, 'metadata'), id)
          stream_json = try_get(data_json, lambda x: x['publication']['content']['gifContent'], dict)
          stream_url = stream_json.get('stream') or try_get(stream_json, lambda x: x['streams']['url'])
          formats = self._extract_m3u8_formats(stream_url, id)
          self._sort_formats(formats)
          return {
              'id': id,
              'title': try_get(data_json, (lambda x: x['og']['title'], lambda x: x['publication']['content']['preview']['title'])),
              'uploader': data_json.get('authorName') or try_get(data_json, lambda x: x['publisher']['name']),
              'description': try_get(data_json, lambda x: x['og']['description']),
              'thumbnail': try_get(data_json, lambda x: x['og']['imageUrl']),
              'formats': formats,
          }
  
  
  class ZenYandexChannelIE(InfoExtractor):
      _VALID_URL = r'https?://zen\.yandex\.ru/(?!media)(?:id/)?(?P<id>[a-z0-9-_]+)'
      _TESTS = [{
          'url': 'https://zen.yandex.ru/tok_media',
          'info_dict': {
              'id': 'tok_media',
          },
          'playlist_mincount': 169,
      }, {
          'url': 'https://zen.yandex.ru/id/606fd806cc13cb3c58c05cf5',
          'info_dict': {
              'id': '606fd806cc13cb3c58c05cf5',
          },
          'playlist_mincount': 657,
      }]
  
      def _entries(self, id, url):
          webpage = self._download_webpage(url, id)
          data_json = self._parse_json(re.findall(r'var\s?data\s?=\s?({.+?})\s?;', webpage)[-1], id)
          for key in data_json.keys():
              if key.startswith('__serverState__'):
                  data_json = data_json[key]
          items = list(try_get(data_json, lambda x: x['feed']['items'], dict).values())
          more = try_get(data_json, lambda x: x['links']['more']) or None
          for page in itertools.count(1):
              for item in items:
                  video_id = item.get('publication_id') or item.get('publicationId')
                  video_url = item.get('link')
                  yield self.url_result(video_url, ie=ZenYandexIE.ie_key(), video_id=video_id.split(':')[-1])
              if not more:
                  break
              data_json = self._download_json(more, id, note='Downloading Page %d' % page)
              items = data_json.get('items', [])
              more = try_get(data_json, lambda x: x['more']['link']) or None
  
      def _real_extract(self, url):
          id = self._match_id(url)
          return self.playlist_result(self._entries(id, url), playlist_id=id)
  