$ mplayer demo.mpg 
MPlayer 1.0pre7try2-4.0.3 (C) 2000-2005 MPlayer Team
CPU: Intel Celeron 2/Pentium III Coppermine,Geyserville (Family: 6, Stepping: 3)
Detected cache-line size is 32 bytes
CPUflags:  MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 0
Compiled with runtime CPU detection - WARNING - this is not optimal!
To get best performance, recompile MPlayer with --disable-runtime-cpudetection.

Failed to open /dev/rtc: No such file or directory (it should be readable by the user.)
Playing demo.mpg.
AVI file format detected.
AVI_NI: No audio stream found -> no sound.
AVI: No audio stream found -> no sound.
VIDEO:  [FMP4]  1020x764  24bpp  20.000 fps  323.8 kbps (39.5 kbyte/s)
vo: X11 running at 1024x768 with depth 24 and 32 bpp (":0.0" => local display)
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffodivx] vfm:ffmpeg (FFmpeg MPEG-4)
==========================================================================
Audio: no sound
Starting playback...
VDec: vo config request - 1020 x 764 (preferred csp: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is 1.34:1 - prescaling to correct movie aspect.
VO: [xv] 1020x764 => 1020x764 Planar YV12 
Broken pipe6/216 22%  1%  0.0% 0 0 94%