Hey guys I have a Quicktime Movie that I want to extract some audio from. Have you guys experanced any luck with doing anything like that or know of any programs I could use for that?

assuming your using winblows and you have a functioning WDM or MME driver sound driver...

start, run, sndvol32 /r

this will bring up the windows mixer for recording.

options, preferences. from the "show the following volume controls list" there will likely be something like wave, what you hear, main, front, etc etc (depends on the driver) but it will describe the output of the soundcard. basically, your just recording from the output, inside software. the windows mixer might not be a DJM or A&H, but it can route digital audio :) most soundboard drivers can do this. but not all. some few do not have the ability to set the record source to the wave out (or whatever they happen to call it) -- the only case i've seen is my old cheap craptastic laptop. even my $8 cmedia card at teh office does it, soundblasters usually dont bitch, and most pro-audio interfaces that support WDM drivers happily comply.

now, that you have set your windows mixer recording device to the output of your soundcard, start up your favorite sound tool (sound forge, cooledit, ntrack, etc etc) and record from the default device (ie whatever the windows mixer picks, which you just set to the soundboard output). play the movie. you now have the wave data in your recording app.

you might have to manually tell the sound app to record at the same bitrate the quicktime audio is coming out at. sometimes the audio hardware and/or device driver will do bitrate conversions for the mixer, some will just record silence if the bitrates are mismatched. sample length (8 16 24 or 32 bitspersample) is important, but likely will be 16.

now you've got a wave dump of the decoded audio. this works for most applications that outputs sound. you can use your sound app to clip out the exact samples you want, touch em up and save them in the format you desire.

another method would be simply to loop the inputs and outputs with a cable and record from the line in. half duplex soundboards are pretty much a thing of the past..

either way seems like alot less effort than trying to directly digitally seperate the quicktime audio stream while decompressing it. just let the player do that for you

isn't there actually a quicktime player for windows?
if there is, and it's anything like my mac quicktime player, you just go under edit/extract track and you have the choice of extracting either video or audio alone. simple as that.

I personally would simply open up the movie, then open up Wavelab, (or any sequencing program of choice) then set the level and hit record letting the video play through...Not familiar with a way of extracting audio from a video without physically recording the audio, but perhaps like sifter mentioned in the above reply, there is a way-




Piece

http://www.doom9.org

is all you need.. please read the read me files and you should be able to do anything you need to do..

hell all i do is open up cooledit, play the movie in media player press record and boom there it is