- # Convert to the same format returned by compat_parse_qs
- video_info = dict((k, [v]) for k, v in args.items())
- if not args.get('url_encoded_fmt_stream_map'):
- raise ValueError('No stream_map present') # caught below
- except ValueError:
- # We fallback to the get_video_info pages (used by the embed page)
+ if args.get('url_encoded_fmt_stream_map'):
+ # Convert to the same format returned by compat_parse_qs
+ video_info = dict((k, [v]) for k, v in args.items())
+ add_dash_mpd(video_info)
+ if not video_info or self._downloader.params.get('youtube_include_dash_manifest', True):
+ # We also try looking in get_video_info since it may contain different dashmpd
+ # URL that points to a DASH manifest with possibly different itag set (some itags
+ # are missing from DASH manifest pointed by webpage's dashmpd, some - from DASH
+ # manifest pointed by get_video_info's dashmpd).
+ # The general idea is to take a union of itags of both DASH manifests (for example
+ # video with such 'manifest behavior' see https://github.com/rg3/youtube-dl/issues/6093)