Totem Doesn't play

view story

http://forums.fedoraforum.org – I everyone, I've just upgraded Fedora 17 to 18. Totem doesn't play any video but, every other video player have no problem (gnome player, vlc even xnoise). The program is not able to find proper codecs with his own. I've installed a lot of gstreamer packages. Some ideas? Thanks in advance. (HowTos)