video / sound offset

[GRUMBLE]

hello,

i just ripped an avi and encoded the video stream as xvid and attached the sound stream to it.

the problem is, the longer the movie goes the audio/video offset gets bigger and bigger.

by the end of the movie, the audio is like 3 seconds in advance of the video.

what can i do about this? thank you!

[GRUMBLE]

anyone?

[james636]

Well I just had a similar problem with a xvid rip myself. The difference between my problem and yours is that my sync problem didn't progress as the movie went along as you spoke of.

OK, I've rip and created an xvid avi file and I have the audio. I muxed with Virtualdub Mod, but the output file is out of sync. Each time that I try, I get a muxed file in which the audio leads video. Can anyone help me with this?

I just went through this, trying to pull a few clips out of the main movie. My method may be a bit different from what you did, but it seemed to work:
- Load VOB file into VirtualdubMOD
- Check "File Information" to get audio skew info (each VOB I had was different)
- Select clip to pull out (optional? - this was my main task)
- Go to "Streams" menu, "Stream List"; right-click on the audio stream, select "Interleaving"
- In "Audio skew correction" box put in value from "File Info" including negative sign if present
- Save as AVI

The resulting AVI should be sync'd properly.

Hope that helps,
Jim

Hope that helps

[Bjs]

This is my method of correcting audio that slowly gose out of position the longer it plays , it's not easy , but if you can get close , that'll do it ...

Works in both dirrections , behind or forward of video ...

Pull the audio from video as wav.
Open the wav in audio city .
Divide the audio file into equal segments .
Save each as sepearte audio file .

Hypercube Time Stretcher (you may need to search for this)
I'll see if I can retrack this thing down soon .

Well , after checking this post , it dose appear on site , nice ...

Load first wav file .
Sellect same folder for output , add "2" onto name .
Go to "stretching" , audio ahead , bring button left .
Click "render" .
Go to folder , sellect rename of new file , add ".wav"
Seems to forget to do this ...

Remember to use the same amount of stretching for all wav segments .

Back in audiocity , open first wav .
Import next part .
Select second wav , goto edit , copy .
Hit the "x" on second wav to close it .
Click right on the end of the first wav .
Edit , paste ... it should be smack on .

Repeat process till all audio has been connected .
Export as wav .

Getting this "perfect" will take some time , its all trial and error , but this dose work .