webpage2 = self._download_webpage(redirect_url, video_id)
         video_url = self._html_search_regex(
             r'flvMask:(.*?);', webpage2, 'video_url')
         webpage2 = self._download_webpage(redirect_url, video_id)
         video_url = self._html_search_regex(
             r'flvMask:(.*?);', webpage2, 'video_url')