videos_urls = sorted(videos_urls, key=lambda u: 'video.sina.com' in u)
player_url = videos_urls[-1]
m_sina = re.match(r'https?://video\.sina\.com\.cn/v/b/(\d+)-\d+\.html',
videos_urls = sorted(videos_urls, key=lambda u: 'video.sina.com' in u)
player_url = videos_urls[-1]
m_sina = re.match(r'https?://video\.sina\.com\.cn/v/b/(\d+)-\d+\.html',