On Thu, 17 Feb 2005 09:57:36 +0100, Vince <mailing at vincen.org> wrote: >> I'd like to know if it's ok to convert AAC files that are supposed >> to be loseless files to FLAC formats ? and if so how can I do in >> under mac osx or linux ?
Michael Peters replied: >aac is not lossless, even at high bitrate - it is still lossy. I have encountered several references to lossless AAC files. I believe that Apple has developed a lossless codec in addition to the mpeg-related codec, and both use the same AAC "package". I'm by no means an expert on the subject. The faad2 program will decode AAC format files into PCM WAV files. You can pipe the output of faad2 into flac to re-encode AAC to FLAC. Since FLAC is lossless, you will by definition not lose any information. I don't know if faad2 supports Apple lossless encoding. It does work with the music I recently purchased from the iTunes store in lossy m4a format. To get faad2, go to sourceforge.net and search for "freeware advanced audio coder". There seems to be a minor bug in the current stable version of faad2, which outputs an odd number of bytes and results in static when trying to stream multiple AAC songs in a row through the Squeezebox. I don't know if it will affect files that are saved as WAV or piped into flac. flac may be smart enough that it isn't confused by the odd byte at the end. -- [EMAIL PROTECTED] John Stimson http://www.idsfa.net/~john/ HMC Physics '94 _______________________________________________ Discuss mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/discuss
