Nero 7/ Nero Vision dvd writing audio-visual synching

[greville]

Hi. Please forgive me if you've covered this topic a million times before; I've searched through the message boards and found what look like answers to this question but, being a newbie at this, I can't figure out if they apply. So... here it is: I burned onto DVD-R some DivX encoded videos stored on my hard drive using Nero Vision (part of the Nero 7 package). The videos (played from the hard drive) run perfectly in any video player on my computer. However, when written to DVD-R (so I could view the videos on a standard DVD player) the audio track and the video track start to part ways. This begins to happen in the second of four chapters (each roughly 45-50 mins long) and becomes progressively worse throughout the written DVD, the audio track falling way behind. Why?
The only thing I can think is that during the writing process, the video is recorded at a rate different from the audio and this might be because I am trying to fit so much video onto a 4.7 Gb disc and the quality is projected as only 'adequate'. But should this mean that the synching goes out? Is this a problem with Nero specifically? Do I have to recode the video in a different program? Please, please, please help!!!

[Abond]

The videos (played from the hard drive) run perfectly in any video player on my computer.

Which videos? Divx files?
Analyse them. Load in GSpot (2.52 beta1) and post a screenshot of analysis here.
Here is a guide:https://forum.videohelp.com/viewtopic.php?t=271697
Unfortunately, it is not very easy to say what Nero vision made with your videos. Obviously something wrong. This is why for conversion to DVD nero vision is considered "CRAP"

[jimmalenko]

It's most likely a problem with the source files IMHO. Despite them playing perfectly on your computer, your computer can "adjust" and keep things synched. They're probably VBR MP3 audio, particularly if they're downloaded. GSpot will confirm this either way.

One of the more popular methods for fixing this is to decode the audio to a WAV file (see http://members.dodo.net.au/~jimmalenko/ExtractAudio.htm ). When you open the file(s) in virtualdub you will get a warning if they are VBR MP3. You can then "replace" the old audio with the new audio in virtualdub by opening the video, going to Video > Direct Stream Copy, then Audio > WAV Audio, and specify your WAV file.

Or you could try different software such as convertxtodvd, which tends to handle things like this pretty well.

[greville]

Thanks you guys for your help. To correct my original post: the DivX videos when played from the hard drive only appear to play in synch in WinMP. In Nero's Player they run out of synch. I have tried to extract the audio in VirtualDub (v. 1.6.15.0). The audio format is already MPEG Layer 3. I followed jimmalenko's instructions (i.e. file opened, VBR-detected message OK-ed, full processing mode chosen, conversion set at 48000 Hz). However, when I save WAV, I get an error message: "No audio decompressor could be found to decompress the source audio format. (source format tag: 0055)". And that's it. Any suggestions?

ps VirtualDub also gives me the message "Warning nothing to output. BFrame decoder lag"

[jimmalenko]

However, when I save WAV, I get an error message: "No audio decompressor could be found to decompress the source audio format. (source format tag: 0055)". And that's it. Any suggestions?

Lame MP3 ACM.

VirtualDub also gives me the message "Warning nothing to output. BFrame decoder lag"

IIRC that was quite common with XVID sources. Google and/or forum search that error and I *think* you'll find it's not too much to worry about.

[greville]

I gave it a go downloading the Lame MP3 ACM but VDub just gave me more grief. I'm giving ConvertXtoDVD2 a go to see if it can cope better than Nero (which I'm beginning to agree is an overblown heap of sh*t). I'll keep you posted.

[greville]

Yeah. ConvertXtoDVD works well and there is no sync problem. Rather pay the $50 than mess around with VDub any longer. Thanks for help