Agree on the Fedora problem, but the solution is pretty easy.

# install the RPM packages, your system is auto detected, the packages take care of updating the repos
sudo dnf install https://mirrors.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm https://mirrors.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-$(rpm -E %fedora).noarch.rpm

# enable cisco-openh264 to be sure
sudo dnf config-manager --enable fedora-cisco-openh264

# install ffmpeg with allowerase
sudo dnf install ffmpeg --allowerasing

# or, if you just want videos, without uninstalling anything
sudo dnf install libavcodec-freeworld

Thats basically it. On the Atomic variants, installing libavcodec-freeworld is just as easy, but allowerasing doesnt work so you need to uninstall everything manually to unbreak ffmpeg. Or you just use uBlue where it is already done and default (this will also avoid any rpmfusion incompatibilities to happen on your device and on the server instead)

Yes this is annoying, but you do that once and afterwards have a current release more stable than Arch, and an old-supported release that is even more stable.