[linux-dvb] Re: VDR files to VOB

[Jarkko Santala <jake@iki.fi>]

On Wed, 14 Aug 2002, Tomi Ollila wrote:

> When I've saved dvb data using `dvbstream <vpid> <apid> -o -ps >file.mpg'
> and run the output using mplayer, I've got a/v sync difference of 400ms
> (sound ahead of that much). I've quessed (so far) that the problem is
> w/ soundcard (and sound drivers) -- I have Soundblaster 64 and I don't know
> how well it copes w/ 48000 bps sound.
>
> A friend of mine has used MPlayer's mencoder to encode some of his
> recordings to be replayed at later date and the resulting AVI is in
> perfect sync (If he replays the non-encoded stream, he uses 250ms sync
> correction). The resulting avi (I think) has 44100 bitrate for sound.
>
> We both have WinTV Nova-t.

Yes, I talked about this earlier today and now confirmed it, Star Wars VI
I saved to disk and the re-encoded to divx with mencoder has no lip sync
problems. No delay correction applied. The .avi still has 48kHz sound.

To be exact, I have to use a correction of -0.255 when playing the mpeg
streams with mplayer either "live" or from disk when the video output is
via dxr3 and audio output via motherboard integrated sound card.

If I use -vo dxr3:noprebuf (instead of just -vo dxr3) the delay is much
smaller, almost none. Somehow I have the gut feeling that not using
noprebuf is better in general, but it might just be me. Anyway, I've got
the no noprebuf delay tuned to perfection so it doesn't matter. ;)

	-jake

-- 
Jarkko Santala <jake@iki.fi>            http://www.iki.fi/~jake/
System Administrator                    2001:670:83:f08::/64



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