[FFmpeg-devel] [PATCH] G722 decoder

[Diego Biurrun]

On Tue, Mar 24, 2009 at 09:54:56PM +0000, Jethro Walters wrote:
> 
> <snip>
> 
> Can somebody tell me definitively what ffmpeg is licensed as?

Check out the README, I'll paste the relevant section below.

Executive summary: LGPL v2.1 or later, unless you explicitly enable GPL
components.  Then it becomes GPL v2 or later.

Diego


2) Licensing
------------

* Read the file COPYING.LGPL. FFmpeg and the associated libraries EXCEPT
  for libpostproc are licensed under the GNU Lesser General Public License.

* libpostproc is distributed under the GNU General Public License, see the
  file COPYING.GPL for details. Its compilation and use in FFmpeg is optional.

* libswscale contains some optional processor-specific optimizations
* that are distributed under the GNU General Public License.

* The files libavcodec/x86/idct_mmx.c, libavcodec/x86/h264_deblock_sse2.asm
  and libavcodec/x86/h264_idct_sse2.asm are distributed under the GNU General
  Public License. They are strictly optimizations and their use is optional.

* The file libavcodec/ac3dec.c is distributed under the GNU General Public
  License.  In order for (E-)AC-3 decoding to work you need to enable GPL
  components.

* The file libavdevice/x11grab.c is distributed under the GNU General
  Public License. X11 grabbing is optional.

* The files libavcodec/jfdctfst.c, libavcodec/jfdctint.c, libavcodec/jrevdct.c
  are taken from libjpeg, see the top of the files for licensing details.

* The file libavcodec/fdctref.c is copyrighted by the MPEG Software Simulation
  Group with all rights reserved. It is only used to create a DCT test program
  and not compiled into libavcodec.

* Some external libraries are under GPL. If you wish to use them with FFmpeg,
  you have to configure FFmpeg as GPL as well.