Audio shorter than video

johnmeyer wrote on 4/2/2003, 9:20 PM

I have a number of DV AVI files, some captured with the Vegas capture application, some captured with SCLive, and some captured with the ATI All-in-Wonder card. I'm finding that often, when I place these files on the Vegas timeline, the audio is shorter by about 2-5 frames than the video. Has anyone else seen this, and is there a solution?

Any help would be appreciated. Thanks!

Comments

discdude wrote on 4/2/2003, 9:43 PM

Yes, I've seen this. This phenomenon is quite common with AVI's of analog video captured using inexpensive capture devices (like the ATI AIW).

The way I fix is by using VirtualDub (http://www.virtualdub.org):
1) Open the video in VirtulDub.
2) Under the video menu, select "Direct Stream Copy".
3) Under Audio do the same. Also, enable "Interleaving." Set the preload to 0 and interleave every frame.
4) Save the video.

This usually works for me. I haven't seen this with MPEG files although I did notice someone posting else saying they had this problem. Unfortunately, I have no fix for MPEG's at this time.

johnmeyer wrote on 4/2/2003, 11:20 PM

Works like a charm. Thank you!

Now I have to figure out why Vdub Direct Stream Copy is only going at 12 fps. On my old 450 MHz machine, I used to get faster rates. My new 2.8 GHz ought to go faster. I think there is an optimization switch I need to enable.