I "upgraded" from Suse 15.3, where everything worked flawlessly to 15.4. Not n upgrade, a total new install. 15.3 and earlier took whatever video or sound formats you threw at it, and i didn't like to fix what worked, but security updates stopped. I used QMplay, but the install DVD downloaded from OpenSuse only offered VLC. Now nothing works, except Youtube and sound. I installed dragonplayer and other in the hope that they would supply whatever other codecs were needed. Looking in Yast, several programs offer H264. I added the Packman repository and ticked 'yes' to vendor change, but no difference. If I could go back to Suse 15.3 or even 15.2, I'd do it instantly. I'd even contemplate an other version than Suse, which has served me well in over 10 years. It is too bad that we in 2022 must battle with problems playing media. That should work out-of-the-box. Ho do I fix it?

To fix it you need to find out the problem. Run VLC from command line and see what it tells you.

Best thing to do would be to open your own thread for your own question, and not hijack someone elses; please read the LQ Rules.

You are missing the codecs, and until you install them, things won't work. For DVD's, you need libdvdcss; other formats need other things, and this is covered on the page from the openSUSE site: https://en.opensuse.org/SDB:Installi...n_repositories