Exporting AC3 audio from an xvid movie

[bla4free]

Hi. I have an xvid movie I would like to change the audio on. I ripped it a while ago using HandBrake and when I ripped it, I had AC3 checked by accident. The audio is a little low and I would like to increase it. When I do, I get this error message:

No audio decompressor could be found to decompress the source audio format.

I'm using Vista x64 and VirtualDubMod 1.5.10.2. thanks for any help!

[Placio74]

Exporting AC3 audio from an xvid movie

Can export audio without decompression (just demux) - no need decompressor (codec).

VirtualDub
Audio > Direct stream copy (default)
File > Export > Raw audio... (type new file name and extension (.ac3 instead .bin))

VirtualDubMod
Streams > Stream list > context menu (right mouse button on selected audio stream) > Direct stream copy (default)
Streams > Stream list > Demux

AVI-Mux GUI
- After add video file, choose and click on generate data source from files,
- choose audio track and from context menu (right mouse button) use extract binary option.

FFmpeg
ffmpeg -i name_file.avi -vn -acodec copy name_file.ac3

Avidemux
Audio = Copy
Audio > Save... (type new file name and extension)

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Can export audio with decompression.

In VirtualDub and VirtualDubMod, need decompressor (codec) - AC3Filter ACM decoder (installed with AC3Filter (http://ac3filter.net/projects/ac3filter)) or AC-3 ACM Codec (http://home.comcast.net/~fcchandler/AC3ACM/).

Then...
VirtualDub
Audio > Full processing mode
File > Save WAV...

VirtualDubMod
Streams > Stream list > context menu (right mouse button on selected audio stream) > Full processing mode (default)
Streams > Stream list > Save WAV


Avidemux - of course just set audio to WAV PCM (instead Copy) and save/decompress it. No need external decoder.

And of course can use FFmpeg.

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Other...
Can recompress audio with change volume - without exporting.