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View Full Version : Suggestions? using Tmpgenc to correct audio sync error in Hauppaugepvr-250 capture


ohhowhappy
31st October 2004, 16:55
I'm not sure if this is the right forum to pitch this, please bear with me.

A 2 hour VHS movie I captured with a Hauppauge pvr-250 looks good and has good audio sync when I play it back in Zoomplayer, but when I demux and remux in Dvd Lab and burn to DVD, after about 45 minutes audio sync starts to fray, after 75 it's annoying, after 90 hopeless. I also tried demuxing with Tmpgenc 2.5, and remuxing with DVD-lab, no difference.

The m2v is 720x480, 3000 cbr, the audio 384/48kHz.

I asked about this atArs Technica (http://episteme.arstechnica.com/eve/ubb.x?a=tpc&s=50009562&f=67909965&m=788004817631) and one respondent suggested a thread at VirtualDub forums. There the opinion is that Zoomplayer and other playback software will handle dropped frames forgivingly, but that the audio is out of sync and needs to be stretched. There fcchandler suggests opening the mpg2 file in Tmpgenc, reencoding at a crappy vid quality, and then using the demuxed audio to mux in a dvd program.

My problem at this point is that tmpgenc won't open the original mpg2 file, the format is not supported. One person suggested making sure that tmpgenc.vfp is registered to VFAPI, which it is.

Thanks for any help with tmpgenc or any other suggestions.

Abond
2nd November 2004, 16:42
Load mpeg2 file in DVD2AVI - > Save Project. This will give you small *.d2v file. TMPG will open it. You can reencode.
I think there is very low possibility you have dropped frames with PVR 250. For sure there is another reason for asynch. By the way DVD2AVI will demux the mp2 audio file if you load the mpg then maybe the synch issue will resolve. Well, try it.

ohhowhappy
2nd November 2004, 18:45
Thanks very much. I'm leaving town for a few days, but will try it when I get back.

Warrych
4th November 2004, 21:19
Originally posted by ohhowhappy
I'm not sure if this is the right forum to pitch this, please bear with me.

A 2 hour VHS movie I captured with a Hauppauge pvr-250 looks good and has good audio sync when I play it back in Zoomplayer, but when I demux and remux in Dvd Lab and burn to DVD, after about 45 minutes audio sync starts to fray, after 75 it's annoying, after 90 hopeless.
Looks like a problem with DVD lab to me...

Yes, using DVD2AVI as a frame server will help. I prefer VirtualDubMod because it is easier to use and offers more options.