Please don’t use VRCVideoCacher for anything but experimental debugging, for your safety. It has many more configuration options VRChat’s yt-dlp doesn’t, including command execution options. https://ask.vrchat.com/t/video-players-having-issues/34472/13
It’s also not strictly required, as VRChat’s yt-dlp 2026.03.03 can play most YouTube videos for now.