Set colorspace for libtheora encoding

[frescor/ffmpeg.git] / LICENSE

diff --git a/LICENSE b/LICENSE
index a5c569040aa7bada9b0570f7bc6fcd760cc68e4c..7a94f8db5f3a9e35ac59a606a8016ca2f3ba8a95 100644 (file)
--- a/LICENSE
+++ b/LICENSE
@@ -1,3 +1,6 @@
+FFmpeg:
+-------
+
 Most files in FFmpeg are under the GNU Lesser General Public License version 2.1
 or later (LGPL v2.1+). Read the file COPYING.LGPLv2.1 for details. Some other
 files have MIT/X11/BSD-style licenses. In combination the LGPL v2.1+ applies to
@@ -18,16 +21,29 @@ Specifically, the GPL parts of FFmpeg are
   libavcodec/x86/idct_mmx.c
 - the X11 grabber in libavdevice/x11grab.c
 
+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.
+
+Should you, for whatever reason, prefer to use version 3 of the (L)GPL, then
+the configure parameter --enable-version3 will activate this licensing option
+for you. Read the file COPYING.LGPLv3 or, if you have enabled GPL parts,
+COPYING.GPLv3 to learn the exact legal terms that apply in this case.
+
+
+external libraries:
+-------------------
+
 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, libamrwb and libfaac 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 becomes nonfree and unredistributable.
-Note that libfaac claims to be LGPL, but is not.
-
-There are a handful of files under other licensing terms, namely:
+The OpenCORE external libraries are under the Apache License 2.0. That license
+is incompatible with the LGPL v2.1 and the GPL v2, but not with version 3 of
+those licenses. So to combine the OpenCORE libraries with FFmpeg, the license
+version needs to be upgraded by passing --enable-version3 to configure.
 
-* 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 nonfree external library libfaac can be hooked up in FFmpeg. You need to
+pass --enable-nonfree to configure to enable it. Employ this option with care
+as FFmpeg then becomes nonfree and unredistributable.