# Third-party notices

JellyTau's own source code is licensed under the MIT License (see `LICENSE`).
Some builds bundle third-party components under other licences, listed here.

## Android: FFmpeg audio decoder (GPL-3.0)

The Android app bundles **`org.jellyfin.media3:media3-ffmpeg-decoder`**, the
Jellyfin project's build of the media3 FFmpeg extension, which contains FFmpeg.
It lets the player decode AC-3, E-AC-3, DTS and TrueHD audio, which Android does
not ship.

- Licence: **GNU General Public License v3.0**
- Source: <https://github.com/jellyfin/jellyfin-androidx-media> (build of
  <https://github.com/androidx/media>), with FFmpeg from <https://ffmpeg.org>

Because this component is GPL-3.0, **the Android APK as distributed is subject
to the terms of the GPL-3.0**. The complete corresponding source for JellyTau is
available in this repository; JellyTau's own code remains available under MIT.

Desktop builds do not include this component.

## Windows: libmpv (LGPL-3.0)

The Windows installer bundles **`libmpv-2.dll`**, the mpv media player library
with FFmpeg compiled in, which plays audio on Windows. It is the LGPL build from
<https://github.com/zhongfly/mpv-winbuild> (mpv built `-Dgpl=false`, FFmpeg
without `--enable-gpl`), pinned by version and checksum in `Dockerfile.builder`.

- Licence: **GNU Lesser General Public License v3.0** (FFmpeg is configured
  `--enable-version3`; mpv itself is LGPL-2.1-or-later in this configuration).
  The installer carries the texts as `licenses/LGPL-3.0.txt` and
  `licenses/GPL-3.0.txt`, which the LGPL-3.0 incorporates.
- Source: mpv <https://github.com/mpv-player/mpv> and FFmpeg
  <https://ffmpeg.org>, built by the scripts at
  <https://github.com/zhongfly/mpv-winbuild>; the exact mpv commit is in the
  asset name in `Dockerfile.builder`.

JellyTau links it dynamically, and the DLL sits beside `jellytau.exe` as a
separate file, so it can be replaced with any compatible libmpv build. JellyTau's
own code remains under MIT. The Linux builds use the system's libmpv and do not
bundle it.