- media = media_data['@attributes']
- media_type = media['type']
- if media_type == 'video/f4m':
+ media = media_data.get('@attributes', {})
+ media_url = media.get('url')
+ if not media_url:
+ continue
+ ext = mimetype2ext(media.get('type')) or determine_ext(media_url)
+ if ext == 'f4m':