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

Nick Kurshev nickols_k at mail.ru
Sun Feb 24 15:21:01 CET 2002


Hello, Michael!

On Sun, 24 Feb 2002 14:46:47 +0100 you wrote:

> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> Hi
> 
> On Sunday 24 February 2002 13:34, Nick Kurshev wrote:
> > Hello!
> >
> > 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'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).
> >
> [...]
> > So try new benchmark first!
> hmm
> IMHO the max benchmarks are meaningless, u should at least count the number 
> of frames which are too slowly decoded, instead of finding the slowest one
If one frame requires > 100% of CPU usage therefore next will be dropped :(
So it's o'k.
Else what's hell I have interruptible output during watching this movie?
(average benchmarks shows me that performance of my CPU is enough far for that).
> 
> i saw this juddery playback too, but imho its not cuz a rare keyframe is 
> decoded too slow (as appearently u suggest)
> what i saw is that if i playback the same movie with the same commandline
> its sometimes perfectly smooth and sometimes nearly all frames are juddery, 
> and that only happens if double buffering is used so i guess that somehow the 
> displayed frame is the wrong one of the 2 in the buffer sometimes ...
If you saw it on your mach64 - then it's ok because compiler writes during
compiling mach64_vid: #warning MACH64 VSYNC WAS NOT IMPLEMENTED!!!
It causes jeddering on your card! But Rage128-Radeons have implemented this function
and it was dissapeared for weeks for me.
> 
> [...]
> 
> Michael
> 
> _______________________________________________
> RTFM!!!  http://www.MPlayerHQ.hu/DOCS
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> 


Best regards! Nick
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