no, that's not the point, x264 doesn't help.
until friday i had a working lean minitube-mplayer installation, and i could enhance it to a full-working, fat, multimedia minitube-vlc-installation.
now minitube-mplayer still works, but after tce-unload phonon-backend-mplayer and tce-load phonon-backend-vlc the decribed situation occurs:
the mentioned error messages appear, the total time is not showed and there is no video, just sound
perhaps the cause for that problem is in one of the other updated packages you have uploaded since friday.
you added some new packages as new dependencies, too.
thank you for every help.