HOWTO:

Follow steps below to patch FFMPEG that enables aac+ encoding.

You have to install libaacplus first!

Here is newer-patch code for debian/ubuntu linux:

This is a home page or he-aac+ v2 library, based on the reference implementation. I created it to prevent ugly embedding of the same code to many Open Source projects and to maintain patches and fixes for it.

3GPP released reference implementations 3GPP High Efficiency Advanced Audio Codec (HE-AAC) Codec (3GPP TS 26.410 V 8.0.0).