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| author | Diego Biurrun <diego@biurrun.de> | 2009-03-25 14:05:20 +0000 |
|---|---|---|
| committer | Diego Biurrun <diego@biurrun.de> | 2009-03-25 14:05:20 +0000 |
| commit | aae9c405c750f87798030a3be3ef4b41d9c27cb7 (patch) | |
| tree | d3dc3fbe7b7e992d448239075cd8b7f96a6d7ac8 /LICENSE | |
| parent | e03b46184251ed469354f4f053b342be5a79980d (diff) | |
| download | ffmpeg-aae9c405c750f87798030a3be3ef4b41d9c27cb7.tar.gz | |
Move licensing information into a separate file called LICENSE and
rewrite it for greater clarity in the process.
Originally committed as revision 18185 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'LICENSE')
| -rw-r--r-- | LICENSE | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000000..61a080778d --- /dev/null +++ b/LICENSE @@ -0,0 +1,37 @@ +Most files in FFmpeg are under the GNU Lesser General Public License version 2.1 +or later (LGPL v2.1+). Read the file COPYING.LGPL for details. Some other files +have a MIT/X11/BSD-style license. In combination the LGPL v2.1+ applies to +FFmpeg. + +Some optional parts of FFmpeg are licensed under the GNU General Public License +version 2 or later (GPL v2+). See the file COPYING.GPL for details. None of +these parts are used by default, you have to explicitly pass --enable-gpl to +configure to activate them. In this case, FFmpeg's license changes to GPL v2+. + +Specifically, the GPL parts of FFmpeg are + +- libpostproc +- some x86 and AltiVec optimizations in libswscale +- optional x86 optimizations in the files + libavcodec/x86/h264_deblock_sse2.asm + libavcodec/x86/h264_idct_sse2.asm + libavcodec/x86/idct_mmx.c +- the AC-3 decoder in libavcodec/ac3dec.c +- the X11 grabber in libavdevice/x11grab.c + +Some external libraries, e.g. libx264, are under GPL and can be used in +conjunction with FFmpeg. They require --enable-gpl to be passed to configure +as well. + +The nonfree external libraries libamrnb and libamrwb can be hooked up in FFmpeg. +You need to pass --enable-nonfree to configure to enable them. Employ this +option with care as FFmpeg then beomes nonfree and unredistributable. + +There are a handful of files under other licensing terms, namely: + +* 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. |