New in Airtime 2.4 is unofficial support for AAC+. Due to legal distribution issues, we cannot make this an out-of-box working experience, however full detailed instructions are provided in this wiki article.
Preparation for compiling with AAC+
You will need to download and compile a package first. This is very simple, and step-by-step instructions will be provided here. Before we start, you will need some packages. From the terminal, type
The next step is to download the latest version of fdk-aac here. At the time of this writing, the version is 0.1.1.
Once downloaded, extract the tar ball. From the terminal, type
Now cd into the newly created directory
Now enter the following commands:
Now that we have the appropriate packages installed, the next step is to build Liquidsoap with AAC+ enabled. Detailed compilation and installation instructions are available here: Building Liquidsoap from Source
Enabling AAC+ in the Airtime UI
Now that Liquidsoap has been compiled with AAC+ support, we have one more final step - enable the ability to select these output types in the Web UI.
To enable AAC+ run the following:
To revert the above command, simply run:
Your Airtime install should now fully support AAC+ output.