VirtualDub improper VBR encoding error...

[no_pulse]

I get the following error on a few .avi files that I have:

VirtualDub has detected an improper VBR encoding in the source AVI...yadda yadda yadda...

What causes this? And what's the best way of fixing it? I want to crop only a section of the avi file out, not the whole video.

Is there another program that is a bit better than VirtualDub that auto-correct audio sync errors, or something?

If someone could point me to a web site that has step by step instructions for fixing and getting the audio to sync with the video, it would be greatly appreciated! Again, all I want to do is edit or crop a section of the movie, not resync the whole thing.

[mats.hogberg]

The one who created the AVI decided on VBR audio. VirtualDub doesn't like that. Solution: Audio: Direct Stream copy, File: Save WAV. Rename this .wav to the format the audio is in, i.e. .mp3 Convert mp3/whatever to wav using dedicated mp3/whatever-to-wav decoder.
Use wav as audio source.

/Mats

[adamf9898]

just another question:

wouldnt it make the .avi file alot bigger cuz the audio would be in .wav?

[p_l]

Mats,
How about simply making the .wav within VDub, using Full processing mode?

[mats.hogberg]

wouldnt it make the .avi file alot bigger cuz the audio would be in .wav?

Well, yes, if you just interleaved the AVI video with the WAV audio, but I was under the impression that some editing was taking place...
The steps I'd take:
Extract audio as I suggested.
Load original AVI
Select Audio -> WAV Audio and select your WAV
Do your edits.
Select Audio -> Full Processing, and choose audio codec under compression.
Then Save AVI

The reason I don't suggest converting to wav with VDub using Full Processing is this:
How can I trust a program that complains about the audio (in effect stating that it can't handle it) to decode the very same audio?

/Mats

[jimmalenko]

How can I trust a program that complains about the audio (in effect stating that it can't handle it) to decode the very same audio?

Each to their own I guess. Virtualdub does say that it will convert it to CBR though.

I do this all the time. Save out to a seperate wav and feed the original AVI into TMPGEnc with the WAV freshly converted to MP2.

[mats.hogberg]

To be honest, I've resorted to extracting the audio with GoldWave most of the times now. I've lately come across a few AVIs where VDub simply refused to demux the audio - while In GoldWave, it was just to load the AVI, save the WAV. A real no brainer - wonder why that suits me?

/Mats

[jimmalenko]

To be honest, I've resorted to extracting the audio with GoldWave most of the times now. I've lately come across a few AVIs where VDub simply refused to demux the audio - while In GoldWave, it was just to load the AVI, save the WAV. A real no brainer - wonder why that suits me?

Whatever works for you