[Ffmpeg-devel] [REQUEST] MMX/MMX2 and SSE optimizations for H.264 decoding

[Daniel Serpell]

Hi!

El Fri, Sep 16, 2005 at 02:26:06PM +0200, Martin Boehme escribio:
> 
> This was for all resolutions?
> 
> A while ago, I tried some of the Apple trailers under MPlayer on my 1.6 
> GHz Pentium M. My (hazy) recollection is that the 960x540 trailers 
> played at full speed, the 1280x720 were slightly slower than real time, 
> and I think I didn't even try 1920x1080.

Here it "almost" work:

$ cat /proc/cpuinfo
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 6
model           : 8
model name      : AMD Sempron(tm) 2500+
stepping        : 1
cpu MHz         : 1751.917
cache size      : 256 KB

$ mplayer -vo null -benchmark -frames 1000 -nosound bbc-africa_m720p.mov  -demuxer 35

V:  37.0 1002/1002 1580%  0%  0.0% 0 0

BENCHMARKs: VC:  26.371s VO:   0.010s A:   0.000s Sys:   0.368s =   26.749s
BENCHMARK%: VC: 98.5878% VO:  0.0372% A:  0.0000% Sys:  1.3750% = 100.0000%

So, 1000 frames in 26.75 seconds is 37 fps, more than enough.

Using -vo xv, it plays at 95% speed in fullscreen.

        Daniel.