On Thu, 17 Feb 2005 10:09:39 -0800, John J. Stimson-III <[EMAIL PROTECTED]> wrote: > 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.
Apple uses a mpeg4 container. Apple Lossless is a lossless format in an mpeg4 container. Apple aac is aac in an mpeg4 container. They both use a mpeg4 container, but the lossless is different than lossy, aac is the lossy. There's talk about using mpeg4 container for mp3's as well in the future (which would give them better tagging and true gapless playback) They might have the same .m4a extension - that extension describes the container, not the codec for the audio inside. It's confusing and I hate it - I like to know what a file is by the extension (IE .ogg can be a divx movie in an ogg container OR a ogg audio file - I hate that) but the powers that be decided the kind of file should be described in the container and not the extension. -- http://mpeters.us/ _______________________________________________ Discuss mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/discuss
