did what?
can’t do a dup to packman, remove libmatroska5 and vlc and then reinstall them
or does ffmpeg not convert the ogm file?
your multimedia is broken and until you do a zypper dup --from packman it will not work!
uninstall those packages, remove the bad repo’s 5,6,7 and 10 (the extra packman) and then reinstall them