old_contents: # coding: utf-8
  from __future__ import unicode_literals
  
  from .common import InfoExtractor
  from ..compat import compat_urlparse
  
  
  class FczenitIE(InfoExtractor):
      _VALID_URL = r'https?://(?:www\.)?fc-zenit\.ru/video/(?P<id>[0-9]+)'
      _TEST = {
          'url': 'http://fc-zenit.ru/video/41044/',
          'md5': '0e3fab421b455e970fa1aa3891e57df0',
          'info_dict': {
              'id': '41044',
              'ext': 'mp4',
              'title': 'Так пишется история: казанский разгром ЦСКА на «Зенит-ТВ»',
          },
      }
  
      def _real_extract(self, url):
          video_id = self._match_id(url)
          webpage = self._download_webpage(url, video_id)
  
          video_title = self._html_search_regex(
              r'<[^>]+class=\"photoalbum__title\">([^<]+)', webpage, 'title')
  
          video_items = self._parse_json(self._search_regex(
              r'arrPath\s*=\s*JSON\.parse\(\'(.+)\'\)', webpage, 'video items'),
              video_id)
  
          def merge_dicts(*dicts):
              ret = {}
              for a_dict in dicts:
                  ret.update(a_dict)
              return ret
  
          formats = [{
              'url': compat_urlparse.urljoin(url, video_url),
              'tbr': int(tbr),
          } for tbr, video_url in merge_dicts(*video_items).items()]
  
          self._sort_formats(formats)
  
          return {
              'id': video_id,
              'title': video_title,
              'formats': formats,
          }
  
new_contents: # coding: utf-8
  from __future__ import unicode_literals
  
  from .common import InfoExtractor
  from ..utils import (
      int_or_none,
      float_or_none,
  )
  
  
  class FczenitIE(InfoExtractor):
      _VALID_URL = r'https?://(?:www\.)?fc-zenit\.ru/video/(?P<id>[0-9]+)'
      _TEST = {
          'url': 'http://fc-zenit.ru/video/41044/',
          'md5': '0e3fab421b455e970fa1aa3891e57df0',
          'info_dict': {
              'id': '41044',
              'ext': 'mp4',
              'title': 'Так пишется история: казанский разгром ЦСКА на «Зенит-ТВ»',
              'timestamp': 1462283735,
              'upload_date': '20160503',
          },
      }
  
      def _real_extract(self, url):
          video_id = self._match_id(url)
          webpage = self._download_webpage(url, video_id)
  
          msi_id = self._search_regex(
              r"(?s)config\s*=\s*{.+?video_id\s*:\s*'([^']+)'", webpage, 'msi id')
  
          msi_data = self._download_json(
              'http://player.fc-zenit.ru/msi/video', msi_id, query={
                  'video': msi_id,
              })['data']
          title = msi_data['name']
  
          formats = [{
              'format_id': q.get('label'),
              'url': q['url'],
              'height': int_or_none(q.get('label')),
          } for q in msi_data['qualities'] if q.get('url')]
  
          self._sort_formats(formats)
  
          tags = [tag['label'] for tag in msi_data.get('tags', []) if tag.get('label')]
  
          return {
              'id': video_id,
              'title': title,
              'thumbnail': msi_data.get('preview'),
              'formats': formats,
              'duration': float_or_none(msi_data.get('duration')),
              'timestamp': int_or_none(msi_data.get('date')),
              'tags': tags,
          }
  
subject: fix extraction