How do we use Stereo audio with the AAC codec? When rendering out a video in Blender 2.8, 2.81, and 2.82, the audio gets mixed down to mono despite being stereo when previewing, and is also about 200% the volume of the preview.
There are no options for Stereo/Mono in the output settings, all we have are Audio Codec, Bitrate, and Volume. I have the Bitrate set to 384 and the volume set to 1.
So how do I render out stereo audio using the AAC codec?
It turns out the problem was not with Blender, but with the player I was using to view my videos (JetAudio) which didn't employ the AAC codec correctly. When testing with VLC, the videos and audio work correctly so, in this case, Blender was not at fault.