The main thing that I run into with #Fedora #Silverblue that really doesn't "just work" — unlike pretty much everything else— is video playback. The way to "fix" it gets more convoluted with every release, too.
Anyway, for Fedora 40 it seems to now be:
`sudo rpm-ostree override remove noopenh264 --install openh264 --install gstreamer1-plugin-openh264 --install mozilla-openh264`
I *really* wish H.264 wasn't so widely adopted as the de-facto codec.