voici ce que dit la console qd je lance mon mplayer avec la commande :
/usr/bin/gmplayer -quiet -nofs
MPlayer 1.0pre6-3.4.3 (C) 2000-2004 MPlayer Team
CPU: Advanced Micro Devices Athlon MP/XP/XP-M Barton (Family: 6, Stepping: 0)
Detected cache-line size is 64 bytes
CPUflags: MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 0
Compiled with runtime CPU detection - WARNING - this is not optimal!
To get best performance, recompile MPlayer with --disable-runtime-cpudetection.
vo: X11 running at 1024x768 (…)