diff options
Diffstat (limited to 'LICENSE')
| -rw-r--r-- | LICENSE | 36 |
1 files changed, 23 insertions, 13 deletions
@@ -1,5 +1,4 @@ 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 @@ -51,18 +50,29 @@ 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: -------------------- +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. +FFmpeg can be combined with a number of external libraries, which sometimes +affect the licensing of binaries resulting from the combination. -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. +compatible libraries +-------------------- -The nonfree external libraries libfaac and libaacplus 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. +The libcdio, libx264, libxavs and libxvid libraries are under GPL. When +combining them with FFmpeg, FFmpeg needs to be licensed as GPL as well by +passing --enable-gpl to configure. + +The OpenCORE and VisualOn 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 these libraries with FFmpeg, the +license version needs to be upgraded by passing --enable-version3 to configure. + +incompatible libraries +---------------------- + +The Fraunhofer AAC library, FAAC and aacplus are under licenses incompatible +with all (L)GPL versions. Thus, unfortunately, since both licenses cannot be +satisfied simultaneously, binaries resulting from the combination of FFmpeg +with these libraries are nonfree und unredistributable. If you wish to enable +any of these libraries nonetheless, pass --enable-nonfree to configure. |