compat_opts: Compatibility options. See "Differences in default behavior".
The following options do not work when used through the API:
filename, abort-on-error, multistreams, no-live-chat,
- no-clean-infojson, no-playlist-metafiles.
+ no-clean-infojson, no-playlist-metafiles, no-keep-subs.
Refer __init__.py for their implementation
The following parameters are not used by YoutubeDL itself, they are used by