+ if video_url is None:
+ video_url = self._html_search_regex(
+ r'MediaContentUrl["\']\s*:(["\'])(?P<url>(?:(?!\1).)+)\1',
+ webpage, 'video url', default=None, group='url')
+
+ if video_url is None:
+ video_url = self._html_search_meta(
+ 'og:video', webpage, default=None)
+