AAC support was broken due to ffmpeg deprecating the currently-used libfaac transcoder. Reworked to test for the new one.
Review Request #130142 - Created May 26, 2017 and updated
Working AAC format detection and transcoding option. I have to admit that most of this work was done by a helpful user on the Ubuntu forums, but I have tested the patch. See https://ubuntuforums.org/showthread.php?t=2348624&page=2&p=13642704#post13642704 for the original discovery of the bug. It is also on the Amarok bug list at https://bugs.kde.org/show_bug.cgi?id=374670#c11
I patched Amarok 2.8.4 and then compiled Amarok. I then tested to see if AAC transcoding worked. The option appeared and it did indeed transcode to AAC format. I also updated the patch to work with the latest version from Git here at KDE (however the patch had been created, it was not in git format).