ripping a wav from divx with AC3

[-Havoc-]

I might be blind but i've spent 30minutes lookin through the tutorials and I can't find anywhere that shows how to rip a wav file from a DivX with Ac3 sound. Please keep in mind I'm not a genius at this stuff so when your giving me the exlpanation if we could stick to GUI appz it would be appreciated. Otherwise i'll probably need full command lines to just punch in....

Thanks for any help anyone may be able to offer me.

-Havoc-

[ChristianHJW]

Use Nandub RC2 from Doom9 download section. Load the movie, set 'audio' to 'direct stream copy' to simply extract the AC3 from the movie using the 'file', 'Save WAV' function in Nandub.

The audio stream will have a WAV ending ( 'sound.wav' ), but you can rename it to 'sound.ac3' and will find that this is still a normal AC3 file. You may do the renaming in same process with demuxing if you type ' "sound.ac3" ' in the file name field ....

[-Havoc-]

well it lets me rip the wav file but the sound is all choppy and unusable..... I tried full processing mode but it won't let me rip the wav file if i try that.

Thanks for trying though!

[nimbus]

download gordianknot 0.21. follow the guide on how to rip a full divx movie.. once you at the end of the process (ie you are in the preview screen and select file - save and encode - do the following.
the encoding control panel comes up. go to audio 1...
select the ac3 file you want.. the one with the highest bit rate..
at the bottom of that you will see a box that says delete wav.. uncheck it. make sure you have mp3 encoding selected and input 192 instead of 128... then press teh button at the bottom and encode the audio only. you will end up with both the mp3 and the wave.. just delete the mp3. the wav will be enormous tho.... like over a gig.. i would recommend ripping the movie and using the ac3 sound. well there it is... if that doesn't work I will be very surprised.

[-Havoc-]

nimbus I don't have an Ac3 file, the Ac3 file is already encoded into the divx, I want to decode the Ac3 file from the DivX as a wav or mp3 file.

I may just have misinterpreted what you were saying but it sounds like your saying you already have the Ac3 file decoded from the DivX. If you could clearify that for me it would be great thanks.

[DSPguru]

@ -Havoc-
there are 2 simple steps :
1. extracting the AC3 stream from the AVI
2. decoding the AC3 to WAV.

please remember one thing :
when you'd extract the AC3 stream from AVI, it might have an extenstion of WAV, all you should do is rename it to AC3 and then decode it to WAV (using AZID (http://www.doom9.org/Soft21/Files/Audio/azid-1.7.1.zip)?).

i hope this clarifies all confusions...

[-Havoc-]

DSPguru my question was how do I extract the Ac3 from the DivX... so far the only way that's worked gives me very choppy sound that is unusable. 2ndly converting Ac3 to wav requires Azid which doesn't appear to be a GUI program and as i stated earlier I'm not the brightest and anything outside of GUI i need a fair bit of direction with. If you could help walk me through it i'd really appreciate it.

Thank you!

[nimbus]

ah sorry bout that. i misread. i thought you already had the ac3. :) I am afraid I am not certain how to do what you are asking. Virtuadub or nandub would be my suggestions but I am new to this as well so...
Good luck with it.. my suggestion would be to rent the dvd :) (that is rent the dvd to rip it.. provided you have a dvdrom of course which I suspect you do)

[-Havoc-]

well i've been foolin around with graphedit for about 45min to try and rip the Ac3 file but I can't seem to find the right filter yet... Anyone happen to know which filter captures Ac3 sound? cause so far all i can do is play it.

[sibe]

When you use nandub to separate the audio track it should be exactly the same as in the movie. My guess is even if it sounds strange, when you use azid (there's a gui for this btw.), or the new BeSweet (+ gui, which also uses azid for ac3 decoding) to decode the file that nandub outputs, it will sound fine.

Sibe

[ppera2]

Just to mention here...
I had problem to extract simple VBR MP3 from AVI with Nandub RC2.
And later problem simple disappeared... It looks that complete media, codec, filter etc. system in WIN is not much reliable

[-Havoc-]

alright finally got it, ChristianHJW was right accept he didn't mention i was supposed to use Azid, it works just fine now =) thanks!