I just checked that link and YES, actually it is, thanks for pointing it out. The docs must have been updated for v0.13, they added the ffmpeg prefix to the go2rtc stance, this wasn’t there before. I found this originally in a github bug discussion with the frigate dev, where he suggested the person having issues to try this out and see what happens. There was no follow up after that suggestion though.
Well these days we have flatpak to solve the “not in the repo” (or ‘old version in the repo’) problem.