2) Licensing
------------
-* Read the file COPYING. ffmpeg and the associated libraries EXCEPT
- liba52 are licensed under the Lesser GNU General Public
- License. liba52 is distributed under the GNU General Public License.
+* Read the file COPYING.LGPL. FFmpeg and the associated libraries EXCEPT
+ for libpostproc and libswscale are licensed under the GNU Lesser General
+ Public License.
-Fabrice Bellard.
\ No newline at end of file
+* libpostproc and libswscale are distributed under the GNU General Public
+ License, see the file COPYING.GPL for details. Their compilation and use
+ in FFmpeg is optional.
+
+* The file libavcodec/x86/idct_mmx.c is distributed under the GNU General
+ Public License. It is strictly an optimization and its 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.