Quantcast Audio Out of Sync on .AVI File Captured from Virtual VCR - digitalFAQ.com Forums [Archives]
09-27-2004, 06:53 PM
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I've very close to my ultimate goal to get from VHS > DVD. I've read and learned LOTS on this great board. I'm SO close!

Here's my technique:
1. I've got a Dazzle90 device which connects, via USB, the video and I've connected the audio directly into the line-in on my PC.
2. I use VirtualVCR to capture the video and video as an .AVI file.
3. I then basically use D.I.K.O to do the rest.

However, I'm finding that the audio gets further out of synch as the video progresses (audio lags video). At first I thought the issue was with D.I.K.O., but if I play back the original .AVI file, I can see the synch issue.

So 1) Is there something that I'm not doing right in VirtualVCR? I followed the guide from here on doom9http://www.doom9.org/index.html?/capture/start.html Here's some info on the settings I'm using:
Video Tab: Use Compression: Huffyuv v2.1.1
Audeo Tab: Capture Audio - resolution=16, Freq=44.1, Channel=Stereo. No compression.
AV Synch Resample audio: resample dynamiclly. Synch using streams offset

If I open the .AVI file in VirtualDub, in the AVI Info, it shows that the video length is 2:05:01.36 while the audio is 2:05:02.67.

Am I dropping video frames?

and 2) Can I fix my existing .AVI files that have this audio synch issue? I've tried using an offset command with avisynth, but that was before I realized that the off-synch was progressive as the video played.
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Someday, 12:01 PM
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09-27-2004, 08:48 PM
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Seems like a good FAQ topic... It took me quite a while to find.

I'll post my progress.[/url]
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