New to Linux and Opensuse.
Installed fresh from two days ago tumbleweed latest. Up to dates.
Installed multimedia codecs using OPI (source
Verified in Yast if system packages were switched to packman repo but none are.
Switching manually does not do anything at all. I am assuming the packages are already installed via OPI.
I must say, I have no issue at all. I can play movies with no pb. This is just to understand how Opensuse Tumbleweed work.

see screenshot -->