- `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