avi audio decompress problem

[Manngo]

Hi!

Have some problem with avi audio processing:

Aim:
I have an avi (div3+mp3) with mp3 audio that PLAYS PERFECT with media player classic. I would like to decompress the audio to wav.
But:

Problem:
after decompressing with virtualdub/vdubmod the audio is 3 seconds shorter. I tried to save as avi with full processing the audio and DirectStreamCopy the video to convert it to pcm and turned out, that the 3 sec is lost in the midlle somewhere. The resulted avi file, that contains wav(PCM) audio has perfect A/V sync in the beginning and in the middle, but not at the end. At a certain point audio suddenly get out of sync.

Tryed:
Demux audio with Vdubmod to fix the mp3 stream with besliced. But the demuxed mp3 (that was created by vdubmod) was already shorter by 3 sec.
Investigate codecs, maybe something is corrupt. I have Lame 3.95 and Fraunhofer installed.
Analyse with GSpot: it said everything is perfect, the audio can be decompressed with Fraunhofer.

Strange:
GSPot said the audio to be CBR 128.
Vdub and Vdubmod say it is VBR 127,7 +/- 2,5.

Any idea? Problem is with codec or decompression of the audio with Vdub(mod)?

[Manngo]

I decompressed the entire audio stream with the correct length successfull, using Nandub. It is mp3 with wav extention. It can be played with media player classic. However, when I remane it, I becomes not playable 'Cannot render the file'. Let beesliced fix it, and became 13 sec shorter. 3 sec lost again inside the stream.

[stephanV]

try decompressing with graphedit

[Manngo]

how do I do it?

[stephanV]

look here (http://nickyguides.digital-digest.com/audio-extract.htm)
first example, just replace ac3 with mp3 and it should work

good luck :)