Error with AC3 after extracting with Vdub

[tc5531]

I am having problems with an AC3 file that I have extracted from a 2-part/file Xvid film. The AC3 in the first file extracts perfectly and works no problem, but in the 2nd file, it gives me loads of errors when I put the file through AC3fix (to remove the WAV header), and the resulting file is a load of garbage. The annoying thing is that the file plays perfectly well in PowerDVD, WMP, etc. using AC3 Filter.

Here are the steps I'm using to extract the file.
1) I open up the file in Vdub and make sure that Audio is set to Direct Stream Copy
2) I goto "Save as Wav", and save the file.
3) I rename the file to an .ac3 file and then open AC3Fix GUI and select the file and give a different name for the output file
4) When I click on "Fix", I get the following error repeated for every frame:
"Checking frame xxx: Wrong frame length, expected yyyyyy, got 673
Writing frame
Writing frame
Writing frame
Current wrongness is zzz bytes"
Where xxx is the frame number incrementing by 1, and yyyyyy is a number incrementing by approx 2000 each pass, and zzz is a number that varies between -300 and 300.
The resulting AC3 file after all this is not usable/recognised by any program as a valid AC3 file.

What puzzles me is why do the video players have no trouble playing the file (in synch with no chopping or errors, etc.) but the extracted file from Vdub has problems when passed through AC3 Fix. This would seem to suggest that the AC3 wasn't corrupt since it can be played. Is there any other way of extracting the AC3 from the Xvid file without using Vdub? Or does anyone have any suggestions of why vdub/AC3 Fix are failing?

Thanks for your (always knowledgeable) help

[Cobra]

Not sure if this will work, but I remember using BeSweet and BeSweetGUI for working with AC3.

https://www.videohelp.com/tools?tool=92#comments

Fingers crossed!

CobraDMX

[tc5531]

well, CobraDMX, it wasn't quite the right route, but while reading up on BeSweet I stumbled across another guide that mentioned BeSliced as a tool that can be used to remove the WAV file header of the Vdub-extracted AC3 file... And lo and behold, BeSliced did report an error in processing, but was clever enough to bypass it. So I now have a working AC3 file!!!

Thanks for your inspiration!!

Mart

[Cobra]

No skill, just fluke!

It's the way I play pool too. Except people tend get a cueball in their pint.

Take it easy!

CobraDMX