I'm on a Macbook Pro (13", Early 2015) running High Sierra 10.13.6.
In AE 15.1.2 (Build 69), when I "Add to Render Queue", I get this error:
"After Effects: One of the output modules could not be imported. It has been reset to use the default settings for the selected file format."
The output module I have set as default (from AE 2017) is an H264 one. H264 isn't showing up in my Format Options:
If I "Add to Adobe Media Encoder Queue" (ME 12.1.2 Build 69), I can export to H264.
Strangely, I did a test by installing AE 126.96.36.199. I get a much longer list of Format Options in AE 14:
I looked in Macintosh HD\Library\QuickTime, and here are the components I found in there:
What do I need to do to have H264 in my Format Options in AE 15.1.2?