[Mplayer-dev-eng] SLOW HARDWARE

[Felix Buenemann]

On Wednesday, 18. July 2001 23:13, you wrote:
> Hi,
>
> > 1. Is it possible to do in mplayer option like -aframedrop
> > (drop audio frames instead of video)?
> > What I mean: when I watch movie on slow hardware without enabled
> > framedrop then sound outdistances video stream. This effect become since
> > mplayer can't decode all audio frames (and skip part of them). We have
> > that when we watch N video frame then audio is decoded from N+100 frame.
> > In this connexion - is it possible that mplayer will drop audio frames
> > instead of video (since with -nosound option it play in real-time)?
>
> Dropping audio parts sounds terrible...
> and it isn't possible. at least for mp3 and ac3.
> for mp3, every frame depends on previous 2 frames. so you can't skip them.
> for ac3, every frame depends on teh previous one.
>
> Btw i already thinging about this problem.
> The real problem is that video isn't real-time, it's a bit slower than
> realtime. So we should slow down audio too but it sounds strange. So we
> should use sometricks to play sound longer but with no pitch change.
> There are various fourier-based filters to do it, but i think they are too
> slow. So the only solution is lowering audio rate. try to play with -srate
>

You might want to take a look at http://www.dspdimension.com/

[schnipp]
>
> A'rpi / Astral & ESP-team
>
> --
> mailto:arpi at thot.banki.hu
> http://esp-team.scene.hu
>

-- 
Best Regards,
   Felix

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