--- On Wed, 3/9/11, Matt Emson <memson.li...@googlemail.com> wrote: > From: Matt Emson <memson.li...@googlemail.com> > Subject: Re: [fpc-pascal] Converting .m4a to .wav > To: "FPC-Pascal users discussions" <fpc-pascal@lists.freepascal.org> > Date: Wednesday, March 9, 2011, 1:08 PM > On 09/03/2011 12:52, Leonardo M. > Ramé wrote: > > Hi, does anyone knows if there's a > library/class/function to handle .m4a (IPhone sound files)? > also, if it allows conversion to other formats, such as > .wav? > > m4a is basically aac, so I'd look down that route. However, > m4a files can be protected by DRM, and those files will be > much harder, maybe even impossible, to convert. Though, I > believe the extension becomes m4p when protected, and also > m4b when an audio book. The format is much richer than MP3 > or WAV as it can contain meta data such as notes, images and > chapter markers. You'll lose these when converting. > > M
Thanks, I tested a sample file sent by my customer, and it was easy to convert with mplayer using this command: mplayer -ao pcm test.m4a -ao pcm:file="output.wav" As mplayer uses ffmpeg library I'm sure I can use it from fpc. Leonardo M. Ramé http://leonardorame.blogspot.com _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
