Sorry, I don’t remember the exact source. I tried a bunch of stuff from all around. I found it with the search query that was something like: “fedora obs amd hw encoding gstreamer vaapi”

I watched a bunch of stuff from GloriousEggroll and some other youtuber, but I don’t remember exactly who. Also had to install gstreamer va-api olugin vie flatpak.

Hope these clues give you a lead.