[MPlayer-users] Neomagic audio OSS delay problem

[Yari Adán Petralanda]

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Thanks a lot


On Sáb 24 Ago 2002 22:42, Arpi wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> Hi,
>
> your oss driver has buggy GETODELAY ioctl... ask its author, not our bug
> (since 0.50 mplayer uses this OSS ioctl to sync audio&video)
>
> > [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
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> > Hi
> > First of all, thanks for that impressive program.
> > I'm experimenting these little problem since version 0.50, the next one
> > to the
> > 0.17 IdegCounter. The problem appears when playing every file with oss as
> > audio output method. Every file, even little MPEGs that put CPU at 30%
> > load or less, is played without problems, except that the video isn't
> > played smoothly, it's played in bursts. I explain myself: you've got
> > played every frame that the video has, it's not like the effect of using
> > framedrop when CPU is at high load. The audio works well, and there is no
> > A-V desync. So the problem is only that video is played in bursts, each
> > one every second or so. Since I couldn't use oss as sound output, I began
> > to use SDL audio output without a problem. But I think that in my
> > situation, SDL audio output eats a little more CPU than oss output, so I
> > started trying with every option mplayer has. Finally, I discovered that
> > using -dapsync, the problem dissapears.
> > My sound card is a Neomagic 256ZX, running on a Dell Latitude CPT C333GT.
> > My actual version of MPlayer is 0.90pre6. This is a sample output:
> >
> > [...]
> > AUDIO: 44100 Hz, 2 ch, sfmt: 0x10 (2 bps), ratio: 16000->176400 (128.0
> > kbit) [...]
> > AO: [oss] 44100Hz 2ch Signed 16-bit (Little-Endian)
> > [...]
> > A-V SYNC: FRAMEDROP (SH_AV_delay=-0.172)!   7/  7   0%  0%  0.0% 11 0 0%
> > A-V SYNC: FRAMEDROP (SH_AV_delay=-0.136)!   8/  8   0%  0%  0.0% 12 0 0%
> > A-V SYNC: FRAMEDROP (SH_AV_delay=-0.121)!   9/  9   0%  0%  0.0% 13 0 0%
> > WARNING: A-V SYNC LAG TOO LARGE: 0.042 {0.047 - 0.005} (too little
> > UNEXP_CORR_MAX?)
> > WARNING: A-V SYNC LAG TOO LARGE: 0.044 {0.044 - 0.001} (too little
> > UNEXP_CORR_MAX?)
> > A-V SYNC: FRAMEDROP (SH_AV_delay=-0.101)! 370/370  15%  7%  2.8% 14 0 0%
> > A-V SYNC: FRAMEDROP (SH_AV_delay=-0.088)! 371/371  15%  7%  2.9% 15 0 0%
> > WARNING: A-V SYNC LAG TOO LARGE: 0.046 {0.035 - -0.010} (too little
> > UNEXP_CORR_MAX?)
> > A-V SYNC: FRAMEDROP (SH_AV_delay=-0.104)! 889/889  16%  6%  2.8% 16 0 0%
> > A-V SYNC: FRAMEDROP (SH_AV_delay=-0.091)! 890/890  16%  6%  2.8% 17 0 0%
> > A-V SYNC: FRAMEDROP (SH_AV_delay=-0.081)! 892/892  16%  7%  2.8% 18 0 0%
> > WARNING: A-V SYNC LAG TOO LARGE: 0.044 {0.041 - -0.003} (too little
> > UNEXP_CORR_MAX?)
> > A:  68.8 V:  68.8 A-V: -0.008 ct: -0.248  1719/1719  16%  7%  2.7% 19 0
> > 0%
> >
> > Any suggestions?
> >
> > Thank you for your time
> > - --
> >    .-.
> >     oo|    Yari Adán Petralanda, a.k.a. mustang
> >    /`'\
> >   (\_;/)           http://www.yadan.org
> >
> > - --
> > Alas, how love can trifle with itself!
> > 		-- William Shakespeare, "The Two Gentlemen of Verona"
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> >
> > _______________________________________________
> > RTFM!!!  http://www.MPlayerHQ.hu/DOCS
> > Search:  http://www.MPlayerHQ.hu/cgi-bin/htsearch
> > http://mplayerhq.hu/mailman/listinfo/mplayer-users
>
> A'rpi / Astral & ESP-team

- -- 
   .-.    
    oo|    Yari Adán Petralanda, a.k.a. mustang
   /`'\          
  (\_;/)           http://www.yadan.org
                         
- --
BOFH excuse #400:

We are Microsoft.  What you are experiencing is not a problem; it is an 
undocumented feature.
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