'add_ie': ['Youtube'],
'info_dict': {
'id': '_ZG8HBuDjgc',
- 'ext': 'mp4',
+ 'ext': 'webm',
'title': 'Douglas Adams: Parrots the Universe and Everything',
'description': 'md5:01ad1e199c49ac640cb1196c0e9016af',
'uploader': 'University of California Television (UCTV)',