[MPlayer-dev-eng] about hardware acceleration using X video extension

[douglasliu]

Dear all:

We'v got an task to get better DVD playback performance under celeron 500 and 
video card supporting hardware acceleration (now , I'm testing GForce4 made 
by NVIDIA) 

cpu:celeron 500
video card:GForce 4
mem:128M
os:red hat 7.2
dirver:NVIDIA-Linux-x86-1.0-4363.run
mplayer:source code 0.90

As we tested, 48% of frames lost in initial size and eq. 


We suspect that hardware acceleration did not work, but xvinfo and mplayer 
said OK. 

if we disable XvShmPutImage function (in libvo/vo_xv.c, line 584), there was 
no frame lost. XvShmPutImage would be the key for playback performance.
Do anybody has any idea about it?


We'v noticed that NVIDIA video card is not welcomed. So is it the reason why 
we can't get hardware acceleration well?


Any ideas are welcomed.

Thanks any way!


Douglas 
July 8,2003