[MPlayer-users] record from TV ( v4l ) with sound

D Richard Felker III dalias at aerifal.cx
Tue Oct 22 05:52:02 CEST 2002


On Mon, Oct 21, 2002 at 08:57:58PM -0500, Krister Lagerstrom wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> Jindrich Makovicka wrote:
> 
> > The reason is that the timebases of CPU and soundcard are different.
> > It means that per one second of CPU time the soundcard doesn't
> > deliver 44100 samples but some more or less.
> 
> Have you considered using the same method as nvrec to solve the
> problem? That is, adjust the audio sample rate dynamically using a PI
> controller. I'm not sure about the exact details, but it seems to work
> pretty good for nvrec. Or is there some reason why it can't be done,
> like it is dependent on OSS drivers?

Distorting audio is MUCH GREATER a sin than adding or dropping video
frames!

Rich




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