- `compat/solaris/make_sunver.pl`
- `doc/t2h.pm`
- `doc/texi2pod.pl`
- - `libswresample/swresample-test.c`
+ - `libswresample/tests/swresample.c`
- `tests/checkasm/*`
- `tests/tiny_ssim.c`
- the following filters in libavfilter:
+ - `signature_lookup.c`
- `vf_blackframe.c`
- `vf_boxblur.c`
- `vf_colormatrix.c`
- `vf_eq.c`
- `vf_find_rect.c`
- `vf_fspp.c`
- - `vf_geq.c`
- `vf_histeq.c`
- `vf_hqdn3d.c`
- - `vf_interlace.c`
- `vf_kerndeint.c`
+ - `vf_lensfun.c` (GPL version 3 or later)
- `vf_mcdeint.c`
- `vf_mpdecimate.c`
+ - `vf_nnedi.c`
- `vf_owdenoise.c`
- `vf_perspective.c`
- `vf_phase.c`
- `vf_pullup.c`
- `vf_repeatfields.c`
- `vf_sab.c`
+ - `vf_signature.c`
- `vf_smartblur.c`
- `vf_spp.c`
- `vf_stereo3d.c`
- `vf_super2xsai.c`
- `vf_tinterlace.c`
- `vf_uspp.c`
+ - `vf_vaguedenoiser.c`
- `vsrc_mptestsrc.c`
Should you, for whatever reason, prefer to use version 3 of the (L)GPL, then
### Compatible libraries
-The following libraries are under GPL:
+The following libraries are under GPL version 2:
+- avisynth
- frei0r
- libcdio
+- libdavs2
- librubberband
- libvidstab
- libx264
- libx265
- libxavs
+- libxavs2
- libxvid
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
+The following libraries are under LGPL version 3:
+- gmp
+- libaribb24
+- liblensfun
+
+When combining them with FFmpeg, use the configure option `--enable-version3` to
+upgrade FFmpeg to the LGPL v3.
+
+The VMAF, mbedTLS, RK MPI, 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.
+The smbclient library is under the GPL v3, to combine it with FFmpeg,
+the options `--enable-gpl` and `--enable-version3` have to be passed to
+configure to upgrade FFmpeg to the GPL v3.
+
### Incompatible libraries
There are certain libraries you can combine with FFmpeg whose licenses are not
compatible with the GPL and/or the LGPL. If you wish to enable these
libraries, even in circumstances that their license may be incompatible, pass
-`--enable-nonfree` to configure. But note that if you enable any of these
-libraries the resulting binary will be under a complex license mix that is
-more restrictive than the LGPL and that may result in additional obligations.
-It is possible that these restrictions cause the resulting binary to be
+`--enable-nonfree` to configure. This will cause the resulting binary to be
unredistributable.
The Fraunhofer FDK AAC and OpenSSL libraries are under licenses which are
incompatible with the GPLv2 and v3. To the best of our knowledge, they are
compatible with the LGPL.
-
-The NVENC library, while its header file is licensed under the compatible MIT
-license, requires a proprietary binary blob at run time, and is deemed to be
-incompatible with the GPL. We are not certain if it is compatible with the
-LGPL, but we require `--enable-nonfree` even with LGPL configurations in case
-it is not.