I am using your fantastic developed extension apple music formats. But the videos which are in 4K format they are not marked as 4K. I have checked on this 4K video of artist DRAKE
https://music.apple.com/in/music-video/spin-bout-u/1674251945 I have cross checked the availability of video in 4K using this script from this repo https://github.com/glomatico/gamdl. And here is the output from terminal. Script shows the video is available in 4K.