text: from .common import InfoExtractor
  from ..utils import (
      clean_html,
      parse_qs,
      remove_start,
  )
  
  
  class Varzesh3IE(InfoExtractor):
      _VALID_URL = r'https?://(?:www\.)?video\.varzesh3\.com/(?:[^/]+/)+(?P<id>[^/]+)/?'
      _TESTS = [{
          'url': 'http://video.varzesh3.com/germany/bundesliga/5-%D9%88%D8%A7%DA%A9%D9%86%D8%B4-%D8%A8%D8%B1%D8%AA%D8%B1-%D8%AF%D8%B1%D9%88%D8%A7%D8%B2%D9%87%E2%80%8C%D8%A8%D8%A7%D9%86%D8%A7%D9%86%D8%9B%D9%87%D9%81%D8%AA%D9%87-26-%D8%A8%D9%88%D9%86%D8%AF%D8%B3/',
          'md5': '2a933874cb7dce4366075281eb49e855',
          'info_dict': {
              'id': '76337',
              'ext': 'mp4',
              'title': '۵ واکنش برتر دروازه‌بانان؛هفته ۲۶ بوندسلیگا',
              'description': 'فصل ۲۰۱۵-۲۰۱۴',
              'thumbnail': r're:^https?://.*\.jpg$',
          },
          'skip': 'HTTP 404 Error',
      }, {
          'url': 'http://video.varzesh3.com/video/112785/%D8%AF%D9%84%D9%87-%D8%B9%D9%84%DB%8C%D8%9B-%D8%B3%D8%AA%D8%A7%D8%B1%D9%87-%D9%86%D9%88%D8%B8%D9%87%D9%88%D8%B1-%D9%84%DB%8C%DA%AF-%D8%A8%D8%B1%D8%AA%D8%B1-%D8%AC%D8%B2%DB%8C%D8%B1%D9%87',
          'md5': '841b7cd3afbc76e61708d94e53a4a4e7',
          'info_dict': {
              'id': '112785',
              'ext': 'mp4',
              'title': 'دله علی؛ ستاره نوظهور لیگ برتر جزیره',
              'description': 'فوتبال 120',
          },
          'expected_warnings': ['description'],
      }]
  
      def _real_extract(self, url):
          display_id = self._match_id(url)
  
          webpage = self._download_webpage(url, display_id)
  
          video_url = self._search_regex(
              r'<source[^>]+src="([^"]+)"', webpage, 'video url')
  
          title = remove_start(self._html_extract_title(webpage), 'ویدیو ورزش 3 | ')
  
          description = self._html_search_regex(
              r'(?s)<div class="matn">(.+?)</div>',
              webpage, 'description', default=None)
          if description is None:
              description = clean_html(self._html_search_meta('description', webpage))
  
          thumbnail = self._og_search_thumbnail(webpage, default=None)
          if thumbnail is None:
              fb_sharer_url = self._search_regex(
                  r'<a[^>]+href="(https?://www\.facebook\.com/sharer/sharer\.php?[^"]+)"',
                  webpage, 'facebook sharer URL', fatal=False)
              sharer_params = parse_qs(fb_sharer_url)
              thumbnail = sharer_params.get('p[images][0]', [None])[0]
  
          video_id = self._search_regex(
              r"<link[^>]+rel='(?:canonical|shortlink)'[^>]+href='/\?p=([^']+)'",
              webpage, display_id, default=None)
          if video_id is None:
              video_id = self._search_regex(
                  r'var\s+VideoId\s*=\s*(\d+);', webpage, 'video id',
                  default=display_id)
  
          return {
              'url': video_url,
              'id': video_id,
              'title': title,
              'description': description,
              'thumbnail': thumbnail,
          }
  