Re: Audio/video sync in xawtv

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I spent a good few days trying to get xawtv to produce good a/v sync with no
success.  I know for a fact that my computer was fast enough because it was
a dual pIII w/ 512 mb and a 10k ultra160 drive.  I had pretty much given up
on xawtv.

Where can I get your modified source?

BTW: I tried a SB16 pci and a SBLive.

--Tom

----- Original Message -----
From: "Ori Pessach" <opessach@xxxxxxxxx>
To: <video4linux-list@xxxxxxxxxx>
Sent: Thursday, March 01, 2001 9:33 AM
Subject:  Audio/video sync in xawtv


> Ok, somebody please tell me I'm not crazy:
>
> I've been experiencing problems with audio/video synchronization when
> capturing MJPEG avi files using xawtv. I tested on three different
> systems, with three different sound cards, and two sets of sound
> drivers, but the results are always the same - when capturing long video
> sequences, upwards of an hour, I see the video diverging from the audio
> by anything from a second or two to around five seconds.
>
> Now, I don't like whining when I can instead read the source. It turns
> out that xawtv's capture code is trying hard to sync the video to the
> system's real time clock. I hacked it so it now synchs to the audio time
> line, and I no longer lose sync, even after capturing video for over an
> hour. Except for some minor issues, that's good enough for me.
>
> I asked Gerd about it, and as far as I can see, he is in the opinion
> that I'm wrong, his code is doing the right thing, and that my sound
> card is a piece of crap. Actually, the sound card IS a piece of crap,
> and I said it, not Gerd. He merely agrees with me on that.
>
> So, am I the only one who's having problems with xawtv's capture code,
> am I imagining things, or what?
>
> Thanks in advance for the diagnosis,
>
> Ori Pessach
>
>
>
>
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> Video4linux-list mailing list
> Video4linux-list@xxxxxxxxxx
> https://listman.redhat.com/mailman/listinfo/video4linux-list
>





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