libfdk-aac is a standalone library of the Fraunhofer FDK AAC 
Codec Library from Android.

This package is built from a source extracted from a Fedora archive
found here:
https://kojipkgs.fedoraproject.org//packages/fdk-aac-free/2.0.0/8.fc36/src/fdk-aac-free-2.0.0-8.fc36.src.rpm

I understand that this version is not uncumbered by non-expired patents
hence is freely redistributable.

Didier Spaier - Wednesday 06 April 2022