Nandub makes movie unsynchronised!

[sashka76]

Hi, people. I have two separate streams: .avi and .mp3 and when I put them together using Nandub, the video turns out to get ahead of the audio. I found a forum message with a similar problem, but it seems that the author of that message has fixed his problem by making a file size less than 2 GB... Well, my file is less. I also tried to change the frame rate -- but to no avail.

I have marked a particular spot in the movie, and both video and audio when seen/heard separately get to that spot at the same time, however, after I put them together using Nandub, they are out of synch (in fact, at the marked spot video becomes 8 sec. ahead of the time it was there when video stream had no sound). Can anybody suggest anything? E.g. another program which simply puts audio and video together without any normalisation etc. etc. etc.?

[poopity poop]

well you do not want to change the frame rate, first off. You having said that leads me to believe that maybe you do not understand what frame rate you should have. You should have 23.976fps (24fps).

anyway,
There are about a million reasons why audio gets out of sync. When I was first starting out I had to manually sync almost every encode I did. Now.. I don't understand how encodes get out of sync. It all comes down to HOW YOU GET YOUR AUDIO.

If you are getting your audio from a DVD (which I'm assuming is correct), I would suggest using the method I've outlined on my site (link below in my signature). Click on the audio section. If you extract, normalize, compress using the methos I have outlined there, all you will have to do is put the audio in and not even worry about a/v sync.

Your problem may not be solved even doing that though...you may have encoded your video incorrectly, perhaps.. SOMEHOW (no idea how though) you skipped a couple frames now and again resulting in a silly movie file..I don't know. Again I would suggest going to my site and looking at the video section and perhaps using some idea's discussed there.

Anyway...I would venure to say there is an 80% chance your problem accually lies within a messed up encoding, or a messed up extraction/compression of the wav to mp3. Either way its how you PREpared the two different things (audio and video) that most likely resulted in a bad sync.

Therefore your solution is simple, and I don't want to sound like "DAMN, my site is great look at me!", but if you look at my site it may give you a good idea on how to extract/normalize/compress your audio and prepare your vob's for encoding and stuff :)

Either way, you are most likely going to have to either re-encode the video and/or recompress the audio