Cut DVD but sync problems

[buddycat]

I have a somewhat related question.

I have some DVDs made with a non-copyright protected software. Each disk has three shows. I want to break them out into sets of three disks. I've been converting the vob files to mpegs (mainly for ease and speed working in Nero), but I've been finding that the audio tracks run further and further behind on the finished products. I tried saving my mpeg tracks as simple wavs and using that for the audio, but still have the same result. Is this still a muxing issue?

Would it be easier to just edit my vob files together and feed them into the track ripping tools above, or can I use some other tool to get the job done? I have Belight and VirtualDub now.

Thanks!

[Baldrick]

buddycat: no, your question is not related with this topic. I'm moving you to a new topic.

How do you convert to mpg? Try vob2mpg. Don't use some converter that will reconvert the video. Or nerovision should be able to import from dvds directly. Or try another authoring and editor like tmpgenc dvd author, it can import dvds, cut and join.

[AlanHK]

I have some DVDs made with a non-copyright protected software. Each disk has three shows. I want to break them out into sets of three disks.

You don't need to edit or convert the video at all.
You don't need VDub, BeSweet or Nero (except perhaps for burning, but ImgBurn is better).

I think you could use DVDShrink for the whole job, extract and reauthor, though I don't use it myself. (You don't have to "shrink" unless you want to, just select the parts you want to keep.)
Otherwise there are plenty of DVD backup utilities (eg ReJig, PGCdemux), that can give you a set of MPEG or M2V + AC3 files for each show, (extracted, not converted or reencoded). Then you can reauthor using, eg GuiForDVDAuthor.

You should not have any sync problems this way, those are usually due to conversions.

[buddycat]

Baldrick: Nerovision is what I"ve been using to import the videos, unless I"m burning them incorrectly. I pull them into my editing window, do the appropriate titling, etc. then burn them I've been finding that the audio lags by as much as a 1/2 second - sometimes worse by the end of the recording. One tedious solution I've used in the past is to export the vobs to make a wav file, then broken the resulting mpeg up into 4 or 5 10-minute long chunks on the two audio track lines in the editing window with slight overlaps. That way, the lag is not too noticeable in the finished product. But there's got to be a better way? That's why I thought this might be an audio question, rather than an editing one.

[buddycat]

AlanHK: Correct me if I"m wrong here - it almost sounds as though I should keep the vob files and use just my mpeg audio? Because I think I've been using the export along with the extracted wav - so nothing's really been solved, so far. Hmmmm.......I might have to try that - it takes longer for Nero to handle vobs directly, but maybe that's what I need to do.....(?)

[AlanHK]

AlanHK: Correct me if I"m wrong here - it almost sounds as though I should keep the vob files and use just my mpeg audio?

Yes! Why would you want to mess with it if you're going to make new DVDs? It's already in the right format and in sync. You're just going through a cycle of conversions to end up with a degraded version of the original.

Because I think I've been using the export along with the extracted wav - so nothing's really been solved, so far. Hmmmm.......I might have to try that - it takes longer for Nero to handle vobs directly, but maybe that's what I need to do.....(?)

No! Please do not use Nero to do this. It will mess things up as you've already found.

Try some of the tools I mentioned. Look at the DVD backup guides here. But don't let Nero near it.

[buddycat]

Well, let me have a look at all this and see what I come up with.

[DarrellS]

I'm having the exact same problem, converting VOBs to DivX from rewritable discs that were made from a Philips 3576 DVR. Used both DVD Decrypter and VOB2MPG. Also used DGIndex with same results. Using Virtualdub to cut the clips and convert to DivX. The seperate VOBs seem to be in sync but the second they are joined (or decrypted as one VOB) they become out of sync.

All of the store bought DVDs that I've converted to DivX are perfect but almost every single disc from the Philips is progressively out of sync up to 2400ms.