def _real_extract(self, url):
video_id = self._match_id(url)
def _real_extract(self, url):
video_id = self._match_id(url)
data = self._download_json(json_url, video_id)
def get_optional(data_dict, field):
data = self._download_json(json_url, video_id)
def get_optional(data_dict, field):