MPEG-1 Encoders that maintain good A/V sync?

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I've been trying to capture video using my Pinnacle Studio Pro
capture card and my EMU10K sound card.  I have a PIII/733 running
kernel 2.4.19-pre10 and I've loaded alsa-0.9rc1.

I've tried both mp1e 1.9.2 and ffmpeg (CVS).  Neither appears to
support alsa directly - both use the OSS emulation.  (I think
that I read somewhere that Alsa was much better as far as
providing a stable audio signal for maintaining A/V sync.  Don't
know whether this is true or not.)

However, by the end of a 2 hour capture I've got severe audio
drift.

Is anyone aware of a capture program that can maintain sync over
a long period of time?  I'm thinking that at a minimum 2 hours is
required.

CPU usage isn't topping out; it's staying in the 20-25% range
during the encode.

Thanks.





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