I know I can use MediaCore plugins via Media Encoder and Media Encoder can encode After Effects projects, but you lose control over the more detailed render settings, most importantly the export color space, which Media Encoder incomprehensibly doesn't let you set. Like fps drop, but not fps drop, its just sometimes duplicate frames. One additional thing in general I discovered is that AE seems to "remember" how a file was opened last time, so for example if you forget to add the QT codec rules, open a bit MagicYUV. Is this the discussion you found? Not in particular.
nest...