Oh the good old days of suffering from a distro based on the US that has to follow the stupid laws of software patents and problems coming from all that shit.
One of the top reasons to use Arch when I started because of the pragmatic approach of do not giving a fuck.
I was actually using Celluloid before but videos were not playing until I used the commands you gave. Gnome videos is now crashing but I don't care as much since Celluloid is now working
This confused the hell out of me last month. You can install two different versions off fmpeg/gstreamer on Fedora. One version of ffmpeg—the completely free, patent-unencumbered version—is available in Fedora's official repositories. This one does not include decoders for H.264 or H.265. You can still install OpenH264 from Cisco and use that to decode H.264 video, but there is no "free" way of decoding H.265 video. For that, you need to go to RPMFusion, which is not associated with Fedora. They ship the H.265 and AAC decoders, among other codecs that cannot be shipped without paying a licensing fee. RPMFusion is a third-party and they believe they can't/won't be pursued for patent infringement.
And all of that is great, but I installed ffmpeg from RPMFusion and it still didn't work. I had to mindlessly copy commands until it did work. So you're not alone. I'm just giving you the context in case you were curious.
Celluloid is an MPV client and installing GStreamer codecs, as you did initially, does nothing. I didn't recognize Celluloid on the screenshot, though.
Didn't some distro remove hardware transcoding support for some non-free codecs for AMD hardware? I remember being really pissed at Manjaro for that a while ago when I noticed Plex was devouring my CPU. Maybe something related to that if you got AMD and hardware acceleration is forced?
True. They created x265 afaik. I literally only layer libavcodec-freeworld on Fedora Kinoite and thats all I need. VLC does everything. BUUUT the Flatpak is not official! And there is already VLC 4.0 out! So helping the Dev is always important, and Videolan would make it officially maintained like the snap, if the Flatpak devs approach them and explain everything etc.
Oh. I was reading OP's problem, and didn't understand. I've been on Fedora for a while and never experienced this, but VLC is one of the first programs I install on every new distro.
I ran into something like this the last time that I installed Fedora. They have (or used to have) a fairly hardcore stance about nonfree codecs, which includes anything licensed under MPEG LA.
I'm not sure what player you are using and what decoder it uses, but I suggest checking if you have h265 support in ffmpeg. If you do, you can play with ffplay anyway :)
I had this problem, but after not being able to resolve it I tried Bazzite and found the gaming experience was much better there anyway, so switched. This problem doesn't exist on that distro.
I mean yes, it's a way to solve playing offline videos, but it doesn't seem to stop there. I found that codecs for playing videos on Firefox are also missing
I could install Chrome as well or hack my way, but it makes me want to recommend the distro to beginners even less