Totem without gst-ffmpeg for playing videos is really a joke atm. It
fails to play any videos i have (i don't have any matroska or theora
videos here). For example (trying to play an mpg video):

** (totem:20494): WARNING **: don't know how to handle video/mpeg,
systemstream=(boolean)true, mpegversion=(int)1

Or when i try to play an avi file:

** (totem:20503): WARNING **: don't know how to handle video/x-xvid,
framerate=(double)25, width=(int)320, height=(int)240,
codec_data=(buffer)0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

So please include gst-ffmpeg in fedora core so totem can playback most
common used video formats. Thanks...