| FFmpeg README |
| ------------- |
| |
| 1) Documentation |
| ---------------- |
| |
| * Read the documentation in the doc/ directory. |
| |
| 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. |
