Audio Demuxing on OS X

[killerener99]

Is there anyway to mux audio directly out of video into plain mp3/acc on mac os x? If your only answer you got for me is to convert it to aiff/mp3 using quicktime/ffmpeg I already know how to do that. I have to extract audio on a regular basis and am looking for a way to speed up the process.

[sneaker_ger]

What's your source container? You could use mkvtoolnix for Matroska and mp4box for MP4-Container.
But as far as I know ffmpeg is able to demux without any reenconding. Example:
ffmpeg -i video.mov -vn -acodec copy test.aac