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* qatar/master: vc1dec: Remove separate scaling function for interlaced field MVs vc1dec: Invoke edge_emulation regardless of MV precision x86: Use consistent 3dnowext function and macro name suffixes g723_1: scale output as supposed for the case with postfilter disabled g723_1: increase excitation storage by 4 g723_1: fix upper bound parameter from inverse maximum autocorrelation g723_1: make scale_vector() behave like the reference g723_1: fix off-by-one error in normalize_bits() g723_1: save/restore excitation with offset to store LPC history wmapro: prevent division by zero when sample rate is unspecified x86: proresdsp: improve SIGNEXTEND macro comments x86: h264dsp: K&R formatting cosmetics LICENSE: Document all GPL files Conflicts: libavcodec/g723_1.c libavcodec/wmaprodec.c libavcodec/x86/h264dsp_mmx.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
59 lines
2.4 KiB
Plaintext
59 lines
2.4 KiB
Plaintext
FFmpeg:
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-------
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Most files in FFmpeg are under the GNU Lesser General Public License version 2.1
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or later (LGPL v2.1+). Read the file COPYING.LGPLv2.1 for details. Some other
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files have MIT/X11/BSD-style licenses. In combination the LGPL v2.1+ applies to
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FFmpeg.
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Some optional parts of FFmpeg are licensed under the GNU General Public License
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version 2 or later (GPL v2+). See the file COPYING.GPLv2 for details. None of
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these parts are used by default, you have to explicitly pass --enable-gpl to
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configure to activate them. In this case, FFmpeg's license changes to GPL v2+.
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Specifically, the GPL parts of FFmpeg are
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- libpostproc
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- optional x86 optimizations in the files
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libavcodec/x86/idct_mmx.c
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- the X11 grabber in libavdevice/x11grab.c
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- the texi2pod.pl tool
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- the following filters in libavfilter:
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- vf_blackframe.c
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- vf_boxblur.c
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- vf_cropdetect.c
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- vf_delogo.c
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- vf_hqdn3d.c
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- vf_yadif.c
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There are a handful of files under other licensing terms, namely:
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* The files libavcodec/jfdctfst.c, libavcodec/jfdctint_template.c and
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libavcodec/jrevdct.c are taken from libjpeg, see the top of the files for
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licensing details. Specifically note that you must credit the IJG in the
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documentation accompanying your program if you only distribute executables.
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You must also indicate any changes including additions and deletions to
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those three files in the documentation.
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Should you, for whatever reason, prefer to use version 3 of the (L)GPL, then
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the configure parameter --enable-version3 will activate this licensing option
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for you. Read the file COPYING.LGPLv3 or, if you have enabled GPL parts,
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COPYING.GPLv3 to learn the exact legal terms that apply in this case.
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external libraries:
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-------------------
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Some external libraries, e.g. libx264, are under GPL and can be used in
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conjunction with FFmpeg. They require --enable-gpl to be passed to configure
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as well.
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The OpenCORE external libraries are under the Apache License 2.0. That license
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is incompatible with the LGPL v2.1 and the GPL v2, but not with version 3 of
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those licenses. So to combine the OpenCORE libraries with FFmpeg, the license
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version needs to be upgraded by passing --enable-version3 to configure.
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The nonfree external libraries libfaac and libaacplus can be hooked up in FFmpeg.
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You need to pass --enable-nonfree to configure to enable it. Employ this option
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with care as FFmpeg then becomes nonfree and unredistributable.
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