Some qualities unavailable on Youtube

At the moment mpv only supports 720p for youtube (maximum, even when I give it a 4K video). Is it hard to implement support for 1080p?

I took a look at the youtube module and _static_decrypt_signature(self, s, video_id, player_url, age_gate) from youtube-dl and there are some differences but it doesnt seem to make a difference.

I am decent at python and would attempt a fix but I’m not sure where to start.

[0880]

MPV + YOUTUBE-DL + FFMPEG:

mpv --ytdl "https://www.youtube.com/watch?v=sLprVF6d7Ug"
Playing: https://www.youtube.com/watch?v=sLprVF6d7Ug
 (+) Video --vid=1 (*) (h264)
 (+) Audio --aid=1 --alang=eng (*) 'DASH audio' (opus) (external)
AO: [wasapi] 48000Hz stereo 2ch float
VO: [opengl] 7680x4320 yuv420p

MPEG-DASH (1080p and above …)

[tp0]

MPV + YOUTUBE-DL + FFMPEG:

60 fps works with non-live videos, but live ones are still 30 fps.

Live:

mpv --ytdl --v https://www.youtube.com/watch?v=Ga3maNZ0x0w | grep -i "Container reported FPS"
[vd] Container reported FPS: 30.000000

VOD/non-live:

mpv --ytdl --v https://www.youtube.com/watch?v=TLQ6iRl8QPA | grep -i "Container reported FPS"
[vd] Container reported FPS: 59.940060