if True, otherwise use ffmpeg/avconv if False, otherwise
use downloader suggested by extractor if None.
compat_opts: Compatibility options. See "Differences in default behavior".
if True, otherwise use ffmpeg/avconv if False, otherwise
use downloader suggested by extractor if None.
compat_opts: Compatibility options. See "Differences in default behavior".
- Note that only format-sort, format-spec, no-live-chat, no-attach-infojson
+ Note that only format-sort, format-spec, no-live-chat, no-attach-info-json
playlist-index, list-formats, no-youtube-channel-redirect
and no-youtube-unavailable-videos works when used via the API
playlist-index, list-formats, no-youtube-channel-redirect
and no-youtube-unavailable-videos works when used via the API