edit: It turns out it was because I had made a minor change in my firefox config to make my browser cosplay as an edge browser (so I can use their new search AI), it's because of that minor change that I am facing this problem. Revert back and everything works out.

I have had this problem for a few days now, Firefox has been distorting the voice of videos for a good while now and I don't know the cause of the problem, it's unlikely the extensions are doing it because I tried opening a random reddit video on a private tab and it didn't work out either. Any help regarding this would be helpful!

https://www.reddit.com/r/AskThe_Donald/comments/14m3kyu/comedians_dana_carvey_david_spade_go_in_on_dr/

This is the original video, again, I am not into the politics of it, but this video was instantly available and I recorded it.

Here is what I heard: https://imgur.com/a/kYxyBvV