I was using FDK AAC encoder, I didn’t know Apple encoder was available for systems other than Apple. Though I have once compared AAC FDK to Apple AAC at 192kbps, and couldn’t tell the difference, while the old FFmpeg AAC encoder fall apart at this bitrate.
It gets installed when you install iTunes. If you don't want to install iTunes, you can pull out the codec installer by opening an old version of the iTunes installer in 7-zip and extracting the MSI. Here's a copy I keep around for whenever I have to do a screen recording on a new computer, it's signed by Apple so you don't have to trust me. https://www.infochunk.com/obs/AppleApplicationSupport64.msi