Dumb workaround that allows you to play video player content from a vrchat world in mpv instead, since they don't work in proton yet.
The latest version can be found at https://github.com/CrispyPin/vrchat-linux-video-workaround
requires mpv yt-dlp python3
install with make install
run vrc-mpv to play videos with mpv when they are requested by vrchat
requires mono
make && make install
This software is not in violation of the VRChat terms of service, as it does not touch any game files or impact the running game. It is a replacement for yt-dlp (which VRChat fetches from github), and its only function is to extract the requested video URLs. This information is also available in the VRChat log files but is not as convenient.