[FFmpeg-devel] 24-bit ALAC decoder, concerns of the ALAC encoder

David Hammerton davidjdh
Tue Sep 8 06:12:34 CEST 2009

Hi all,

I've just released version 0.2.0 of my ALAC (Apples Lossless Audio Codec)
decoder, which includes support for decoding 24-bit ALAC files. As you use
this decoder in ffmpeg, you may wish to update it to the latest version. You
can find the new version at http://craz.net/programs/itunes/alac.html

While I'm writing here, I have a minor concern with the ALAC encoder
distributed with ffmpeg, and I'd like someones feedback on this. It seems to
me that the ALAC encoder source bears similarity to that of the ALAC
decoder. It seems to me plausible that the encoder is derived work from the
decoder. If this is the case, and let me stress the 'if', then the license
requirements of the decoder may have been breached. Could someone please
take a look at this and, if necessary, take steps to rectify the problem?
The license terms of the ALAC decoder can be found at
http://craz.net/programs/itunes/alac.html, and explicitly mention that "The
above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software."



David Hammerton

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