VOB audio/video is out of sync on timeline, why?

mickbadal wrote on 1/3/2008, 9:55 AM

I wanted to grab a couple of cartoons off a DVD that I own for some personal editing fun (don't worry, no distribution intended). I ran the DVD through DVD Shrink and extracted the 2 cartoons (they end up as separate VOB files). The resulting VOB's video & audio seem perfectly in sync when I play it on the computer in PowerDVD.

However when I add the VOB files to the VMS timeline, the first cartoon is fine - audio & video is in sync. But the second cartoon's audio is out-of-sync with the video (video lags the audio). I tried shifting the audio over slightly on the timeline to see if that would align them, but they still remain out of sync. I tried doing a shift-ctrl on the video to speed it up slightly (2 to 5 %), but they still aren't in sync. No matter how much aligning I try to do, they are still out of sync. It actually seems like the video and audio are playing back at different rates over the 6-minute span that they last, or possibly the video is dropping frames or something.

Seems like a bug to me, but I'm not sure. I was wondering if any of you have experience with a similar issue, and how to get around it?

Comments

Eugenia wrote on 1/3/2008, 10:48 AM

I think it was discussed before and the consensus is that it's a bug.

Ivan Lietaert wrote on 1/3/2008, 10:49 AM

This phenomenon has been described on this forum already. There's no real solution, as far as I remember.

mickbadal wrote on 1/3/2008, 11:04 AM

Wow that's yucky.

So is there any kind of workaround in VMS, or if not, some kind of cool little freeware utility or something that will convert the VOB to AVI and get around the problem?

Ivan Lietaert wrote on 1/3/2008, 11:41 AM

You could give SUPER a try (freeware, google for it).

Eugenia wrote on 1/3/2008, 12:20 PM

Yes, download SUPER and drag n drop your VOB in ther and use the following options from top to bottom:

avi, huffYUV, WAV-PCM 16bit little-endian, MEncoder.
Then use the right resolution, aspect ratio, frame rate, bitrate and if your VOB is interlaced use "Other opts" and "Deinterlace". Then encode and use the created .avi file to edit in Vegas. Filesize will be big, but there won't be any quality loss.

mickbadal wrote on 1/4/2008, 5:50 PM

Thanks for the tip guys, but I'm throwing my hands up at this point and need help. I dl'd SUPER and set the following settings:

avi, huffyUV, WAV-PCM 16bit little-endian, MEncoder.

Video 720x480, aspect is empty (tried 4:3 & 3:2 in prior trials, but those didn't work either), 29.97 fps, bitrate 29040 (i've tried selecting other values but the entry always remains 29040). Other Opts - deinterlace.

Audio 22050, 2 channels, 705 kbps, default language select.

If I use "Other opts - encode only first 10 seconds", the resulting file (about a few hundred MB) plays in media player and I can drop it on the VMS timeline. If I try 60 seconds (about 1GB), it still works. But if I try encoding the 1/2 the file duration (195 seconds), I end up with a 3GB file that won't play in Media Player (says it doesn't have the right codec) and it won't drop on the VMS timeline. Same if I try to encode the entire file (6GB file that won't play or drop onto VMS.)

My disk is NTFS, and I also routinely drop 13GB files into VMS after (importing 1-hr of media off of Hi8 tapes), so the file size can't be it.

Is it possible my video file settings are wrong and somehow end up messing up the file once it reaches a certain length? If so, what video properties am I supposed to use? If these are supposed to reflect properties of the input file, I don't know how to get those properties of the VOB file. I tried dropping it on Gspot, but it tells me virtually nothing about bit rate and so forth for the file.

Help?

MSmart wrote on 1/4/2008, 9:14 PM

Give DVDFab HD Decrypter a try. It should give you clean VOB files without needing to do any of the fixing you've been doing.

If it still is OOS, you could give VideoReDo a try as well. It has a QuickStream Fix utility that cleans up video streams. Download and register a FREE trial. (Registering is needed to save more than 15 mins of video.)

mickbadal wrote on 1/5/2008, 5:06 AM

I tried DVDFab HD, I ended up with the same out-of-sync results.

I finally punted and encoded to MPG2 using SUPER. That came out ok, I was able to put it in VMS. The resulting quality appears ok, and I think it will be all right when DVDA re-encodes it - after all, my source is a cartoon.

SUPER is a very neat tool, if I could only understand why it has to encode such a LARGE file for avi (6GB for 6 minutes???), and why large files like that end up unusable...