Muxara macOS App - Open Source & Third-Party Software
The Muxara macOS app includes open-source and third-party software. This page describes those components, how to obtain source code, and related license information. A copy of key license texts is also bundled in the app (Acknowledgements).
Overview
- FFmpeg and ffprobe - invoked as separate executables in the app bundle (not linked into the main application binary).
- libebml 1.4.5 and libmatroska 1.7.1 - statically linked for Matroska read/write and chapter tools.
- Additional codecs and libraries are included inside the FFmpeg build (see table below).
FFmpeg and ffprobe
We ship universal (Apple Silicon and Intel) FFmpeg and ffprobe binaries built from release sources distributed via ffmpeg.martin-riedl.de. That build includes GPL-licensed encoders such as libx264 and libx265. The exact version string is shown in the app (About → Third-party libraries) and stored as ffmpeg-version.txt in the app bundle at build time.
License: GNU General Public License version 2 or later (GPL-2.0-or-later), as applied to the particular binary configuration we redistribute. See FFmpeg Legal Considerations.
Corresponding source:
- Build recipe: martin-riedl FFmpeg build script
- Upstream FFmpeg: ffmpeg.org download
- Release binaries and checksums: ffmpeg.martin-riedl.de
Written offer: For at least three years from your last distribution of the app, you may request a copy of the complete corresponding source for the FFmpeg binaries we shipped with your app version by emailing [email protected] with the app name, version, and build number from About Muxara.
libebml and libmatroska
These libraries are built as static archives and linked into the app for Matroska container operations. Versions included in current releases:
- libebml 1.4.5 - tag
release-1.4.5- github.com/Matroska-Org/libebml - libmatroska 1.7.1 - tag
release-1.7.1- github.com/Matroska-Org/libmatroska
License: GNU Lesser General Public License version 2.1 (LGPL-2.1). License texts: libebml LICENSE.LGPL, libmatroska LICENSE.LGPL.
Corresponding source and relinking: Source code for the exact versions above is available from the GitHub repositories and tags listed. Our build script macos/scripts/fetch-matroska.sh in the Muxara source tree documents how we produce universal static libraries for the app. Because these libraries are statically linked, you may obtain corresponding source and written instructions to recompile and relink them by contacting [email protected].
Other libraries in the FFmpeg build
The FFmpeg binaries we bundle may include additional codecs and libraries. The following table lists major components commonly present in our chosen build profile (your installed version may include a subset; run ffmpeg -buildconf locally for the exact configuration):
| Component | Typical license | Upstream |
|---|---|---|
| FFmpeg / ffprobe | GPL-2.0-or-later (build configuration) | Link |
| x264 (libx264) | GPL-2.0-or-later | Link |
| x265 (libx265) | GPL-2.0-or-later | Link |
| LAME (libmp3lame) | LGPL-2.0-or-later (library); GPL applies when linked in GPL FFmpeg | Link |
| libvpx | BSD-3-Clause | Link |
| libopus | BSD-3-Clause | Link |
| SVT-AV1 (libsvtav1) | BSD-3-Clause | Link |
| rav1e / dav1d / aom | Various (BSD / Apache-2.0) | Link |
| OpenH264 | BSD-2-Clause | Link |
Trademarks
FFmpeg is a trademark of the FFmpeg project. Matroska is a trademark of Matroska.org. Muxara is not affiliated with, endorsed by, or sponsored by those projects. We use these names only to describe compatible formats and included software.
Full license texts
The app bundle includes a NOTICES file with GPL-2.0 and LGPL-2.1 license texts and component notices. You can also read:
Contact
Open-source and license questions: [email protected]. See also Mac app Terms and Mac app Privacy Policy.