So I'm trying to convert some .mkv files to dvd and when I extracted the .mkv file I got a .avi file for video and a .aac file for audio. The .aac file is 5.1 so I'd like to preserve the 5.1 and I know the first step to turning that into .ac3 is to convert it to .wav using Faad2. Now, how do I use faad2? I download it and look in the file and there are no executables or anything to open, how do I use this to convert .aac to .wav?
Faad will not run on it's own, but rather as a called up library of functions, often by using ffmpeg.. Have a look at this info and see if there is anything which is close to what you want to do.. http://www.howardforums.com/archive/topic/702135-1.html Also investigate the other switches that are possible while running ffmpeg.. You may have to search quite a bit.. ffmpeg has quite a few undocumented features, and there are variously patched versions around. You normally run it from the command line, but there are GUI applications like avidemux which must be worth a look. I had a google around and found quite a few applications which will convert aac to wav (and other formats) didn't find any free ones, but they must exist. http://www.008soft.com/aac-to-wav.htm
For a free converter, aac to a different format you can try one of the free online file converters: http://www.audio-converter.biz/ http://media-convert.com/convert/index.php You can google for some others.