Open-source licenses

Updated 10 November 2026. Covers Movara for Android, versions 1.1.0 to 1.3.1.

Libraries under the LGPL

They are compiled into one file, libmpv.so, by the media-kit project's libmpv-android-video-build, version 1.1.7, "default" flavor. This flavor leaves out all GPL-only and non-free code: FFmpeg is configured with --disable-gpl --disable-nonfree --enable-version3, and mpv with -Dgpl=false.

Changes to these libraries

The media-kit build applies three small patches before compiling:

• FFmpeg: dash_base_url_escape.patch, which changes libavformat/dashdec.c
• FFmpeg: hls_mp4_seek.patch, which changes libavformat/hls.c
• mpv: mpv_lavc_set_java_vm.patch, which changes libmpv/client.h and player/client.c

The patches are in the build scripts download below, in buildscripts/patches. Veltack AI has made no other changes to these libraries.

Download the source code

This is the complete source used to build the libmpv.so in Movara, and it's the same in every version listed above. Each file is a .tar.xz archive.

• FFmpeg 6.09.3 MBSHA-256 b580a90f21809d56a4c0b9c440a80e0b2df0ded1e9c0bfbdbd867bb54a5dfc68
• mpv, commit 78d437402.2 MBSHA-256 cd1b423a0901d62b6525896cc0d81916a839a23b4aacada3cb776a0772498000
• FriBidi 1.0.12852 KBSHA-256 b8ecc2d610887b75ebcb3368fdd4d311fec723bda778ac6e28549445ddb6f445
• Build scripts and patches, version 1.1.769 KBSHA-256 aa1cf96cd3b424a2a0548d337b8801646e0584f4c1c208f791385cb4af49c6f0

All checksums are also in SHA256SUMS.txt.

If you can't use these downloads, email support@veltack.com and we'll send you the same source. This offer is valid for at least three years after we last distribute any of the versions above.

Use your own version of the library

Movara loads libmpv.so as a separate library at runtime, so a compatible version you build yourself will work in its place.

1. Build the library: unpack the build scripts and run buildscripts/bundle_default.sh on Linux. It fetches the versions listed above, applies the patches and builds libmpv.so for each Android architecture. Make your changes to the sources in buildscripts/deps before it builds.
2. Get Movara's app files: with USB debugging on, run adb shell pm path com.veltack.movara and copy each listed file with adb pull.
3. Replace the library: in the file that contains lib/<architecture>/libmpv.so, usually the one named after your device's architecture, replace libmpv.so with your version.
4. Sign and install: align and sign every file with your own key using zipalign and apksigner. Then uninstall Movara and install your files with adb install-multiple.

Uninstalling removes Movara's saved data, such as your library, playlists and saved moments, but not your media files.

You may modify Movara for your own use, and reverse engineer it to debug those modifications.

Other open-source components

These are under permissive licenses that don't require us to share source code.

Flutter and the Dart packages Movara uses are listed in the app, under Settings > Open-source licenses.

License texts

• GNU Lesser General Public License 3.0, with the GNU General Public License 3.0 it builds on
• GNU Lesser General Public License 2.1
• FFmpeg license notice
• mpv license notice
• FriBidi authors
• Apache License 2.0

Questions

Email support@veltack.com.