Open-source licenses
Motiontone sends the open-source libraries below to your browser. Each is listed with its license, where to get its source, and any changes we made to it.
prores-wasm-encoder 1.0.3
Encoding transparent video exports (ProRes 4444 .mov).
- License: LGPL-2.1-or-later
- Source: https://github.com/OlivierEstevez/ProRes-WASM-encoder
- Our changes: the patch we apply
Copyright © Olivier Estevez.
Derived from FFmpeg's ProRes encoder (proresenc_kostya.c), © Anatoliy Wasserman and Konstantin Shishkov, LGPL-2.1 or later.
This software is based in part on the work of the Independent JPEG Group (the integer DCT, from libjpeg's jfdctint.c).
ProRes is a trademark of Apple Inc. This encoder is not affiliated with or endorsed by Apple.
Modified by Gigamesh on 2026-10-14 so it bundles for the browser; the change touches only lines that run under Node.
It loads as a file of its own, so you may replace it with your own build under the terms of the LGPL.
mediabunny 1.56.2
Reading uploaded video and writing video exports.
- License: MPL-2.0
- Source: https://github.com/Vanilagy/mediabunny
- Our changes: the patch we apply
Copyright © Vanilagy.
Modified by Gigamesh so exported audio starts on time in Apple players: the MP4 and MOV writer adds an AAC roll sample group.