I can confirm that both H.264 4:2:0 and 4:2:2 rendered as MP4 (using input resolution = output resolution), do indeed work in v3370 and the files import into Adobe CS6 with no issues!
additional testing info:
I noticed when changing the output res larger, this only works when rendering to H.264 AVI (both MOV and MP4 don't work, not a problem for me).
I believe ffmpeg doesn't like doing H.264 4:4:4 as MP4 since trying to convert from AVI to MP4 using the conversion mentioned earlier didn't work. In MLVP trying to render H.264 4:4:4 as MP4 creates a tmp video file in the target folder and then deletes it at the end of rendering (which is fine imo if this is invalid in ffmpeg).
I tried to say thank you with your PayPal Donate button but it says "This recipient is currently unable to receive money." Let me know when it works and I'll be happy to donate!

best regards