Really a bummer that I have to go through media encoder to encode UHD h.264 files... Why is AE internal render limited to 2000x1920 when trying to encode 3840x1920?
I am sure this is a limitation adobe specially wrote in so that you could not crash AE by trying to render to large a raster for h.264 back in the day. But now its fine and that limitation should be removed.
Thanks!