How to split AVI (WMV3,AAC) into separate streams

[sehh]

I've got 26 AVI files which i'd like to convert and burn on DVD.

These 26 AVI files are in WMV3 video codec (also known as WMV9) and AAC audio codec.

So that souldn't be hard to convert to DVD right?... :(

I load VirtualDub... doom it says that it doesn't support WMV3 because its not a Video For Windows (VFW) codec. Thus i installed the appropriate "wmv9VCMsetup.exe" and that did absolutely nothing, i still get the same error.

I then load VirtualDubMod... doom it says it can load the video part but it doesn't support AAC.

So, i load these AVI files with Pinnacle Studio v10 and that also breaks since it doesn't like both video and audio codecs.

Ok, lets try something else. I load TMPGenc and that actually managed to convert the WMV3 codec into plain MPEG-2 fully compatible for DVD usage!!! wooo!

Unfortunately it doesn't support the AAC codec and thus the result is a video-only MPEG file.

So, i'll try BeSweet to convert the AAC audio to something else. Unfortunately that didn't work because BeSweet didn't like the fact that the input file was an AVI. So i have to split the AVI and extract the audio first....

Does anyone know how i can extract the AAC audio from an AVI file so i can convert it with BeSweet?

Thank you.

[check]

You can use the commandline program that is bundled with nero's AAC encoder to decode the AAC to a Wave file and then re-encode that.

[sehh]

Can someone email me this commandline util to sehh@altered.com please?

I'd really appriciate it. I'd like to avoid installing an entire suite of applications.

Thank you.

[check]

It's not the entire suite you need, just the free 500kb zip file here: http://ww2.nero.com/nerodigital/enu/Nero_Digital_Audio.html :D

[sehh]

Thanks man, much appriciated.

I try it right now.

[sehh]

Just tried it and it doesn't work. It doesn't understand the AVI container or something.

The error given is: moov box not found

This is the commandline: neroAacDec.exe -if movie.avi -of audio.aac

(neroAacEnc is for encoding from wav to aac and neroAacTag is used to change the features of mp4 files encoded in aac)

[check]

perhaps i misexplained, the tool will take an AAC or MP4 file and decode the audio to a wav file. You will need to extract the audio from the avi first.

[sehh]

Thats what i've been asking all this time, how can i extract the audio stream from the AVI file?

VDub won't open the file, VDubMod won't read the audio (just the video) and BeSweet can't handle AVI.

Anything else that can extract the audio from an AVI?

[tebasuna51]

I never see this kind of avi but try with AviMuxGUI.

[sehh]

No worries, windoze utils are so much crap, i'm amazed how people work with them...

I used mplayer/mencoder under Linux and did everything i needed.

[check]

Well, uh, use mencoder :P http://ffdshow.faireal.net/mirror/mplayer/

[gameplaya15143]

avisynth:
directshowsource("video.avi")

.. as long as it was playable using directshow.

I'm a little more curious how get aac into avi in the first place :sly: I wasn't aware it had been done.

[check]

AAC into avi is more than possible, (read the AVIMux authors page about 'avi myths') but adds a lot of fat overhead.