I tried that already, didn’t really help. That repo is currently deactivated on my machine, I think I had some (more) annoying problem with it (don’t remember all the details), but after spending quite a few hours on this problem, I essentially gave up trying to fix it. Right now, video playback works well enough that I don’t want to deal with it anymore.
And, honestly, I haven’t had a Linux installation where everything related to multimedia and graphics drivers just worked flawlessly. Ubuntu, Debian, Arch and Suse all had different issues. Switching from Nvidia to AMD didn’t help, either. Sometimes the flaws were minor and easy to ignore, but it has never ever worked as well as it does on Windows.
My day was going great until I got reminded that that thing exists…