Is it safe for using mediacodecs?

Most mediacodecs from are not installed in fresh openSUSE, Packman has but they are not open source softwares, the Packman Repository is not official openSUSE’s, I have no patent issue and if the official openSUSE repository is 100% safe how is these mediacodecs?

Just because they have patents against them thus not by definition OS they are excluded from openSUSE but the source is available and built for openSUSE thus safe

Built them by yourself.

Thank you for the help

I’m a beginner, building is complicated and needs to rebuiding when new version is up