not-sync DVD to sync DVD

[Inc0gn1t0]

I thought I posted this message, but it doesn't appear in the forum. I hope I will not end up double posting.
Anyway, here's my problem. I have a DVD that has an audio sync problem. It's the type where the audio is delayed as the film progresses. I would like to correct this problem, so I guess I'll have to back up the DVD. Since most guides and threads on audio sync problems are about avi's and mpg's I have not found a solution yet. A guide or some pointers would really help me out.

[ammck55]

Welcome to the Forum:

Your post count says "1", so you may have thought that you posted, but actually didn't get 'er done. If you have problems with posting, PM one of the Mods and we'll take a look.

Have you run a search on "sync", "asynch", or some such derivative of your problem? If you do, many options will jump out at you.

It's hard to tell what your problem is without more concise input. If a Forum or Internet-wide search doesn't get your fix, post back here with some details, such as, what software you're using, how you've set it up, etc. Remember, take a good look at the Forum Rules at the top of the page and don't bring us a question that we cannot help you with.

Details! We need more details. :)

ammck55

[Inc0gn1t0]

Well, it's the original DVD that has the audio problem. So I could do an ordinary backup, but then the copy would also have the audio problem, right? I guess I'll need a method of backing up a DVD that will also allow me to change the audio synchronisation.
I hope I've explained it more clearly now, so that you can tell me what software I should be using ;)

[setarip_old]

Hi!

Is this the ONLY DVD that exhibits this behaviour?

Does it exhibit this behaviour in more than one player?

[Inc0gn1t0]

Yep, it's definately the dvd. It's only this DVD and I've tried three different DVD players. Let's get to the "not-sync DVD to sync DVD" part ;)

[setarip_old]

Let's get to the "not-sync DVD to sync DVD" part
Now that we seem to have established that the original DVD is asynchronous, you should probably first follow the moderator's gentle suggestion to you, "Have you run a search on 'sync', 'asynch', or some such derivative of your problem? If you do, many options will jump out at you."

[Inc0gn1t0]

I did search, before I posted this thread. But I can't seem to find the right query to nail a specific thread on how to go about. I don't want to give the impression of being lazy, but I'm just stuck at the moment.

[ammck55]

Let's get to the part where you take your original DVD back to the store where you purchased it and either get your money back, or a replacement. :rolleyes:

If your "original DVD" is an edited and authored compilation of captured footage, etc., it's a totally different set of circumstances. It's a common problem for joined .avi's to run async due to the time/length differences in their respective audio/video streams.

[Inc0gn1t0]

The latter is the case. I found a lot of information on how to correct this problem in an AVI. So what I could do is change the DVD to AVI, then correct the problem, and then changing the AVI to DVD again. But this doesn't look like an optimal procedure to me. Is it possible to demux sound and picture, then editing the sound (or picture), and putting it back together again?

[jel]

Inc0gn1t0,

to fix this may very be more trouble than its worth ;)

it really does depend on how the dvd is authored and where the audio loses synch.

for example if the audio loses synch at a vob-id or cell-id then you could demux the .vob by vobid or cell (using pgc demux by jsoto, or doitfast4u), and identify at which points at which you need to adjust the audio.

you could then load the respective audio files into a tool such as jsoto's delaycut and adjust the start/end time by padding the stream. to be honest, beyond trial and error, i have no idea how you could easily work out the delay required to re-synch the video.

you would then need an authoring program to remux the video/audio/subs, (including all chapter points), then use a tool such as vobblanker to substitute the remade .vob for the original.

like i said, could be more trouble than its worth :)

good luck
j

[setarip_old]

I'd start again with the ORIGINAL captured material (that was used to create the "original" DVD) and start all over again. What is the format (video and audio) of the captured material?

[feedback]

I agree with setarip_old. Start all over again.

BTW this wasn't a PAL to NTSC or vice versa, converted DVD was it?

Regards,:)