There is 1 request format for /initplayback:
- OnesieRequestProto
There are 2 request formats for /videoplayback:
- VideoPlaybackRequestProto. Gets media data with ump.
- VideoPlaybackAbrRequestProto. Can fetch media data for two itags at the same time. Interlaced data response. Uses server abr streaming url or
abr=1in the url.
The response format is application/vnd.yt-ump