[MPlayer-dev-eng] [PATCH] dvdnav part 3 - emptyframe
Reimar Döffinger
Reimar.Doeffinger at stud.uni-karlsruhe.de
Tue Jul 31 21:21:16 CEST 2007
Hello,
On Tue, Jul 31, 2007 at 03:42:06PM +0200, Michael Niedermayer wrote:
> On Tue, Jul 31, 2007 at 01:56:00PM +0200, Reimar Döffinger wrote:
> > On Tue, Jul 31, 2007 at 12:16:42PM +0200, Michael Niedermayer wrote:
> > > On Tue, Jul 31, 2007 at 11:17:27AM +0200, Reimar Döffinger wrote:
> > > > On Tue, Jul 31, 2007 at 12:05:22AM +0200, Diego Biurrun wrote:
> > > > [...]
> > > > > libmpeg2 used to be faster than FFmpeg. The last time I made benchmarks
> > > > > years ago this was indeed still the case, but FFmpeg was catching up.
> > > > > Baptiste keeps telling me that FFmpeg is faster nowadays, but we really
> > > > > need extensive benchmarks to confirm or deny this.
> > > >
> > > > Just yesterday I was shocked to see that ffmpeg12 + vo_gl on Windows is
> > > > about 30% slower than libmpeg2 + vo_gl.
> > > > Probably I am doing something stupid in vo_gl (I guess that with
> > > > PCI-Express slice-based rendering becomes very slow in comparison), but
> > > > it still is a huge difference.
> > >
> > > uhm ... 30% ...
> > >
> > > it would be interresting to know what exactly causes this speed difference
Seem the 30% were -vc mpeg12 -noslices vs. -vf ffmpeg12 -slices, which
is not a fair comparison, at least not with OpenGL under Windows Vista,
seems like texture uploads have a really massive overhead there.
Still, ffmpeg12 has a slow but consistent disadvantage in all cases.
> > -noslices fixes it mostly btw. I didn't make proper measurements though.
>
> if you do, dont forget to try -lavdopts idct=4
One of the runs is with that option, made things slower though.
See attached file.
Sample file used is available at
http://samples.mplayerhq.hu/HDTV/Van_Helsing.ts
Greetings,
Reimar Döffinger
-------------- next part --------------
Command:
mplayer -nosound -benchmark -frames 500 Van_Helsing.ts
cpu family : 15
model : 67
model name : AMD Athlon(tm) 64 X2 Dual Core Processor 3800+
stepping : 2
cpu MHz : 2000.000
cache size : 512 KB
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy
=================================================
=================================================
On Gentoo Linux:
=================================================
=================================================
MPlayer dev-SVN-r23940-4.2.0 (C) 2000-2007 MPlayer Team
====================================================
-vo gl:yuv=2
====================================================
-vc mpeg12 -noslices:
BENCHMARKs: VC: 4.368s VO: 2.916s A: 0.000s Sys: 0.206s = 7.491s
BENCHMARKs: VC: 4.363s VO: 2.913s A: 0.000s Sys: 0.214s = 7.491s
BENCHMARKs: VC: 4.359s VO: 2.929s A: 0.000s Sys: 0.173s = 7.460s
-vc mpeg12 -slices:
BENCHMARKs: VC: 5.190s VO: 1.884s A: 0.000s Sys: 0.168s = 7.242s
BENCHMARKs: VC: 5.158s VO: 1.894s A: 0.000s Sys: 0.211s = 7.264s
BENCHMARKs: VC: 5.168s VO: 1.870s A: 0.000s Sys: 0.210s = 7.248s
-vc ffmpeg12 -noslices:
BENCHMARKs: VC: 5.064s VO: 2.911s A: 0.000s Sys: 0.242s = 8.216s
BENCHMARKs: VC: 5.008s VO: 2.916s A: 0.000s Sys: 0.189s = 8.113s
BENCHMARKs: VC: 5.046s VO: 2.943s A: 0.000s Sys: 0.171s = 8.161s
-vc ffmpeg12 -slices:
BENCHMARKs: VC: 7.423s VO: 0.135s A: 0.000s Sys: 0.198s = 7.757s
BENCHMARKs: VC: 7.358s VO: 0.131s A: 0.000s Sys: 0.218s = 7.707s
BENCHMARKs: VC: 7.422s VO: 0.136s A: 0.000s Sys: 0.175s = 7.733s
-vc ffmpeg12 -slices -lavdopts idct=4:
BENCHMARKs: VC: 7.853s VO: 0.136s A: 0.000s Sys: 0.200s = 8.189s
BENCHMARKs: VC: 8.013s VO: 0.126s A: 0.000s Sys: 0.242s = 8.381s
BENCHMARKs: VC: 7.912s VO: 0.129s A: 0.000s Sys: 0.217s = 8.258s
============================================
with -vo xv:
NOTE: these values are not reliable, I still had the NVidia binary drivers
loaded which seems to cause a hang for about 0.2-0.5 seconds in about every
fourth run
============================================
-vc mpeg12 -noslices:
BENCHMARKs: VC: 4.478s VO: 0.655s A: 0.000s Sys: 0.206s = 5.339s
BENCHMARKs: VC: 4.417s VO: 0.630s A: 0.000s Sys: 0.734s = 5.781s
BENCHMARKs: VC: 4.490s VO: 0.649s A: 0.000s Sys: 0.201s = 5.340s
-vc mpeg12 -slices:
BENCHMARKs: VC: 4.243s VO: 0.394s A: 0.000s Sys: 0.157s = 4.793s
BENCHMARKs: VC: 4.220s VO: 0.389s A: 0.000s Sys: 0.190s = 4.800s
BENCHMARKs: VC: 4.312s VO: 0.387s A: 0.000s Sys: 0.955s = 5.655s
-vc ffmpeg12 -noslices:
BENCHMARKs: VC: 4.968s VO: 0.619s A: 0.000s Sys: 0.160s = 5.746s
BENCHMARKs: VC: 5.116s VO: 0.645s A: 0.000s Sys: 0.173s = 5.934s
BENCHMARKs: VC: 4.947s VO: 0.654s A: 0.000s Sys: 0.197s = 5.799s
-vc ffmpeg12 -slices:
BENCHMARKs: VC: 5.001s VO: 0.014s A: 0.000s Sys: 0.198s = 5.213s
BENCHMARKs: VC: 5.183s VO: 0.014s A: 0.000s Sys: 0.212s = 5.409s
BENCHMARKs: VC: 4.995s VO: 0.013s A: 0.000s Sys: 0.196s = 5.204s
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On Windows Vista, 32 bit:
(I added -quiet to the options since Mingw console
is horribly slow)
=================================================
=================================================
MPlayer dev-SVN-rUNKNOWN-3.4.5 (C) 2000-2007 MPlayer Team
(it is actually r23940 as well, didn't check why configure picked UNKNOWN)
====================================================
-vo gl:yuv=2
====================================================
-vc mpeg12 -noslices:
BENCHMARKs: VC: 5.366s VO: 2.807s A: 0.000s Sys: 0.625s = 8.798s
BENCHMARKs: VC: 5.924s VO: 2.591s A: 0.000s Sys: 0.533s = 9.048s
BENCHMARKs: VC: 5.759s VO: 2.478s A: 0.000s Sys: 0.452s = 8.689s
-vc mpeg12 -slices:
BENCHMARKs: VC: 8.318s VO: 1.512s A: 0.000s Sys: 0.466s = 10.296s
BENCHMARKs: VC: 8.333s VO: 1.851s A: 0.000s Sys: 0.533s = 10.717s
BENCHMARKs: VC: 8.099s VO: 1.448s A: 0.000s Sys: 0.530s = 10.077s
-vc ffmpeg12 -noslices:
BENCHMARKs: VC: 6.473s VO: 2.314s A: 0.000s Sys: 0.620s = 9.407s
BENCHMARKs: VC: 6.036s VO: 2.931s A: 0.000s Sys: 0.565s = 9.532s
BENCHMARKs: VC: 6.392s VO: 2.387s A: 0.000s Sys: 0.628s = 9.407s
-vc ffmpeg12 -slices:
BENCHMARKs: VC: 10.269s VO: 1.092s A: 0.000s Sys: 0.604s = 11.965s
BENCHMARKs: VC: 10.452s VO: 0.967s A: 0.000s Sys: 0.531s = 11.950s
BENCHMARKs: VC: 12.588s VO: 0.000s A: 0.000s Sys: 0.469s = 13.057s
====================================================
-vo directx
(NOTE: image movement is not smooth, broken vsync? -
only noticable with -vc mpeg12)
====================================================
-vc mpeg12 -noslices:
BENCHMARKs: VC: 4.912s VO: 1.076s A: 0.000s Sys: 0.486s = 6.474s
BENCHMARKs: VC: 4.863s VO: 1.157s A: 0.000s Sys: 0.501s = 6.521s
BENCHMARKs: VC: 5.208s VO: 0.906s A: 0.000s Sys: 0.438s = 6.552s
-vc mpeg12 -slices:
BENCHMARKs: VC: 4.642s VO: 1.188s A: 0.000s Sys: 0.503s = 6.333s
BENCHMARKs: VC: 4.758s VO: 1.127s A: 0.000s Sys: 0.402s = 6.287s
BENCHMARKs: VC: 4.662s VO: 1.028s A: 0.000s Sys: 0.550s = 6.240s
-vc ffmpeg12 -noslices:
BENCHMARKs: VC: 5.946s VO: 0.807s A: 0.000s Sys: 0.579s = 7.332s
BENCHMARKs: VC: 5.882s VO: 0.998s A: 0.000s Sys: 0.499s = 7.379s
BENCHMARKs: VC: 5.740s VO: 0.999s A: 0.000s Sys: 0.484s = 7.223s
-vc ffmpeg12 -slices:
BENCHMARKs: VC: 5.961s VO: 0.387s A: 0.000s Sys: 0.422s = 6.770s
BENCHMARKs: VC: 5.879s VO: 0.485s A: 0.000s Sys: 0.485s = 6.849s
BENCHMARKs: VC: 5.957s VO: 0.595s A: 0.000s Sys: 0.406s = 6.958s
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