OpenMayhem Studio uses Mediabunny 1.55.7, copyright Vanilagy and contributors, under Mozilla Public License 2.0.
The unchanged source code and full MPL license are available in /licenses/mediabunny-1.55.7.tgz (package/src and package/LICENSE).
Upstream: https://github.com/Vanilagy/mediabunny

Other media validation components: file-type 21.3.4 (MIT), sharp 0.35.0 (Apache-2.0).
Their original license notices are retained in the installed packages.