I installed Fedora 22 (64 bit, workstation, gnome desktop) and then immediately changed the desktop to KDE4. I tried to play an avi video with totem: I got a black screen, no sound, and no indication of the length of the video (e.g. 50 minutes). The same avi file played ok in Lubuntu, which seems to use Mplayer. Therefore, in (Fedora 22 - KDE4), I tried to use the software management app to install MPlayer. Instead, KMPlayer was installed. Just in case, I then did a complete power off, and then re-boot.
Then, I tried to play the same avi file with KMPlayer; I got the same result as with Totem: black screen, no sound, and no indication of the length of the video. I then invoked KMPlayer from a terminal, result below. Please help.
$ kmplayer f1.avi
KGlobal::locale(): Warning your global KLocale is being recreated with a valid main component instead of a fake component, this usually means you tried to call i18n related functions before your main component was created. You should not do that since it most likely will not work mplayer -wid 73400503 -slave -vo xv,sdl,x11 -ao alsa,oss,sdl,arts -framedrop -contrast 0 -brightness 0 -hue 0 -saturation 0 /home/steve/f1.avi -identify