[MPlayer-users] Jerky/Juddery/interruptible output - COMMON ANSWER

[Brian J. Murrell]

On Sun, Feb 24, 2002 at 03:34:19PM +0300, Nick Kurshev wrote:
> Hello!

Hi Nick,

> I've a long time though about such problems.
> After implementing MAX BENCHMARK I got answers for my questions
> (I've discussed that yestoday at openprojects #mplayer irc channel)

I wish I could cvs update to get this MAX BENCHMARK but I have not
been able to for the last 12 hours.  Anyway...

> Source movie: 720x480 30fps MPEG4-DIVX.
> (This beauty has length ~90 min and was fitted into 1 CDROM. Size: 690MB)
> 
> My benchmarks:
> mplayer -vo xvidix -fs -zoom -benchmark -frames 5000 SecondSkin.avi
> AVE BENCHMARKs: V:  47.457s VO:   0.010s A:   2.952s Sys: 116.429s =  166.849s
> AVE BENCHMARK%: V: 28.4434% VO:  0.0061% A:  1.7693% Sys: 69.7813% = 100.0000%
> 
> MAX BENCHMARKs: V: 197.860s VO:   0.000s A:  42.400s
> MAX BENCHMARK%: V:118.5862% VO:  0.0000% A: 25.4122% = 143.9984%

I could not find anything in DOCS about benchmarking other than the
few words the man page has.  Can you explain the what the above
numbers are reporting?

> 
> mplayer -vo xvidix -vc ffidvx -fs -zoom -benchmark -frames 5000 SecondSkin.avi
> AVE BENCHMARKs: V:  28.967s VO:  18.804s A:   2.953s Sys: 116.119s =  166.843s
> AVE BENCHMARK%: V: 17.3617% VO: 11.2704% A:  1.7701% Sys: 69.5978% = 100.0000%
> 
> MAX BENCHMARKs: V: 118.425s VO:  75.250s A:  38.230s
> MAX BENCHMARK%: V: 70.9799% VO: 45.1023% A: 22.9137% = 138.9959%
> 
> I've found only one thing: my Duron-700 is not enuogh power for this movie!
> And I couldn't imagine self how I can speedup playback on 50%.
> (IMHO even direct rendering with ffdivx will not help me).
> 
> Just for info:
> benchmarks with LostInSpace.vob 720x480 30 fps (was downloaded from hungarian
> server which was pointed by Arpi)
> AVE BENCHMARKs: V:  18.347s VO:   0.003s A:   1.844s Sys:  43.127s =   63.321s
> AVE BENCHMARK%: V: 28.9750% VO:  0.0048% A:  2.9116% Sys: 68.1086% = 100.0000%
> 
> MAX BENCHMARKs: V:  31.311s VO:   0.000s A:  14.464s
> MAX BENCHMARK%: V: 49.4482% VO:  0.0000% A: 22.8432% =  72.2913%

So what's the difference between SecondSkin.avi and LostInSpace.vob
that you have enough CPU to play the latter but not former?

> So try new benchmark first!

Would love to.  :-)

Also, if as your benchmark reports, you need 143.9984% CPU, you must
see your CPU pegged while you are playing, no?  If not, why not?  I
*never* see my CPU pegged just playing video files (mostly mpeg1s).

With regard to the judder I was reporting on my Radeon with vidix and
playing full screen, I also saw a lot of tearing last night too.
Should I see tearing at all, ever, if mplayer is co-ordinating with
vsync?

b.


-- 
Brian J. Murrell