I believe I have successfully achieved capacity to watch video snippets in Firefox on Leap 16. Google AI suggested adding the package “mozilla-openh264” and I checked that in YaSt and found that it was “available” but not installed.
I installed that via zypper and then I ran its other suggested command “opi codecs” and it ran through showing the “already installed” ffmpeg-7 and a few others to install, I just clicked “y” for each of the suggestions, and then it asked if I wanted to add Packman repo?? So I also said yes, it asked me to pick a mirror, so I picked “Erlangen” . . . and it then found some errors . . . likely on the Packman repo . . . .
I shut the machine down and on cold boot, launched FF and checked twitter & bluesky and videos were working!!! So, it can be done by going the “opi” route, but that didn’t load the mozilla-openh264 codec . . . .
I also had adjusted the FF permissions on “autoplay” to “allow sound & video” . . . and Leap 16 is playing videos!!!