audio too short

[King_B]

Im trying to convert an avi to vcd, but I have problems with the sound synchronisation. I started using TMPGEnc in its own, but when I watched it, as the film goes on it gets more and more out of sync. I tried extracting the audio first using Virtual Dub, and a load of other programs, but when I do they are too short for the film (80 mins 30 secs instead of 80 mins 41 secs) and this just makes the situation worse. I have also tried stretching the file so it is the right length, but this has no effect.

There are some errors on in the avi, with artifacts appearing sometimes, would this have any effect?

I thought it would be more convinient to write to VCD and watch on my TV, but with the amount of time spent trying to sort it out it would have been easier just to watch it on my PC.

If anyone has any suggestions or tips they would be much appreciated

 

[ChickenMan]

I would suggest you use DVD2SVCD with TMPGenc to make your VCD, it should sort things out for you. However, if the AVI has errors, then yes this can cause problems for you with sync. Artifact are purely Video problems & should not affect audio.

Have a read in the Tutorial section on how to fix a/v sync problems and also how to make the VCD in the first place.

What is the frame rate of the AVI, is it 23.976, 25.00 or 29.97 fps ? Make sure you re-encode to a VCD of the same fps to eliminate sync probs.

 

[celtic_druid]

If there are artifacts due to corrupt video frames then I would think it is quite likely that the audio is also corrupt, so I wouldn't say that they don't effect audio. Encoding artifacts or artifacts caused by the codec on the otherhand are purely video only.

 

[King_B]

I fixed the errors in the avi, and then used dvd2svcd. However my dvd player is having sync problems, and I want to use the movie offset option in DVD2SVCD. The only prob is that it takes a long time encoding the avi, and I was wondering if it was possible to change the offset without doing the whole process again