License Summary

This page summarises the project license and the external source licenses used by FFmpegKitNext.

This summary is for documentation convenience only and is not legal advice. The full license text in each source package is authoritative.

Project

Component	Source version ref	License	Notes
FFmpegKitNext	8.1.1	LGPL-3.0-or-later	Applies to the FFmpegKitNext wrapper library itself. Bundled artifacts also include FFmpeg and any enabled external libraries

External sources

Library	Source version ref	License	Notes
GNU config	v20210814	GPL-3.0-or-later WITH Autoconf-exception-3.0	Build support scripts (config.guess, config.sub), not a linked runtime library
Chromaprint	v1.6.0	LGPL-2.1 overall; MIT for Chromaprint's own code	Its license file states that bundled FFmpeg-derived code makes the package LGPL-2.1 overall
cpu_features	v0.11.0	Apache-2.0
dav1d	1.5.3	BSD-2-Clause
Expat	R_2_8_1	MIT
FFmpeg	n8.1.2	LGPL-2.1-or-later by default; GPL-2.0-or-later when GPL parts are enabled	FFmpegKitNext enables FFmpeg's --enable-version3; generated binaries are therefore LGPL-3.0-or-later by default, or GPL-3.0-or-later when GPL components are enabled
fontconfig	2.18.1	MIT-style	Includes Unicode data under the Unicode terms of use
FreeType	VER-2-14-3	FreeType License or GPL-2.0-or-later	FreeType allows choosing either license
FriBidi	v1.0.16	LGPL-2.1-or-later
giflib	5.2.2	MIT
GMP	v6.3.0	LGPL-3.0-or-later or GPL-2.0-or-later	GMP grants either license, or both in parallel
GnuTLS	3.7.11	LGPL-2.1-or-later	Core library license; bundled applications and gnutls-openssl are GPL-3.0
HarfBuzz	14.2.1	Old MIT	Some subdirectories may carry their own notices
libjpeg-turbo	3.1.4.1	IJG License, BSD-3-Clause, and zlib	Listed as jpeg in scripts/source.sh; replaces the old separate libjpeg / libjpeg-turbo rows
Kvazaar	v2.3.2	BSD-3-Clause	Updated from the old LGPL entry
LAME	RELEASE__3_100	LGPL-2.0-or-later
Leptonica	1.87.0	BSD-2-Clause
libaom	v3.12.1	BSD-2-Clause
SVT-AV1	v4.1.0	BSD-3-Clause-Clear	Listed as libsvtav1 in scripts/source.sh
libass	0.17.4	ISC
GNU libiconv	v1.17	LGPL-2.1-or-later	Library license; associated command-line utilities may use GPL terms
libilbc	v3.0.4	BSD-3-Clause
JPEG XL	v0.11.2	BSD-3-Clause	Listed as libjxl in scripts/source.sh
liblc3	v1.1.3	Apache-2.0
libogg	v1.3.6	BSD-3-Clause
libpng	v1.6.58	libpng License version 2
libsamplerate	0.2.2	BSD-2-Clause
libsndfile	1.2.2	LGPL-2.1-or-later
Theora	v1.1.1	BSD-3-Clause	Listed as libtheora in scripts/source.sh
libuuid	libuuid-1.0.3	BSD-3-Clause	Upstream license file describes this as the Modified BSD License
vid.stab	v1.1.1	GPL-2.0-or-later	Listed as libvidstab in scripts/source.sh
Vorbis	v1.3.7	BSD-3-Clause	Listed as libvorbis in scripts/source.sh
libvpx	v1.16.0	BSD-3-Clause
libwebp	v1.6.0	BSD-3-Clause
libxml2	v2.11.4	MIT
Nettle	nettle_3.8.1_release_20220727	LGPL-3.0-or-later or GPL-2.0-or-later
OpenCORE AMR	v0.1.6	Apache-2.0
OpenH264	v2.3.1	BSD-2-Clause
OpenSSL	openssl-3.5.7	Apache-2.0
Opus	v1.5.2	BSD-3-Clause	License file also references royalty-free patent grants
RapidJSON	24b5e7a8b27f42fa16b96fc70aade9106cf7102f	MIT	License file also lists bundled BSD-licensed msinttypes and JSON-license json.org / JSON_checker components
Rubber Band Library	v4.0.0	GPL-2.0-or-later	Commercial licensing is available from the upstream project
SDL	release-2.32.10	zlib	Listed as sdl in scripts/source.sh
Shine	3.1.1	LGPL-2.0-or-later
Snappy	1.2.2	BSD-3-Clause	Benchmark/test data includes separate third-party notices
SoX Resampler	0.1.3	LGPL-2.1-or-later	Listed as soxr in scripts/source.sh
Speex	Speex-1.2.1	BSD-3-Clause
SRT	v1.5.5	MPL-2.0
Tesseract OCR	5.4.1	Apache-2.0	Listed as tesseract in scripts/source.sh
LibTIFF	v4.7.1	libtiff License (BSD-like)	tif_lzw.c includes a legacy Berkeley-style notice
TwoLAME	0.4.0	LGPL-2.1-or-later
VisualOn AMR-WB Encoder	v0.1.3	Apache-2.0	Listed as vo-amrwbenc in scripts/source.sh
VVenC	v1.14.0	BSD-3-Clause-Clear
x264	b35605ace3ddf7c1a5d67a2eb553f034aef41d55	GPL-2.0-or-later	Commercial licensing is available from the upstream project
x265	4.2	GPL-2.0-or-later	Commercial licensing is available from the upstream project
Xvid	release-1_3_7	GPL-2.0-or-later	Listed as xvidcore in scripts/source.sh
zimg	release-3.0.6	WTFPL-2.0