I've tried YouTube forum and the direct YouTube support in the past (with no luck) in attempt to solve this crucial problem for me, I hope you can help me .
I'm experiencing a hefty decrease in video quality and i've tried almost anything (I think).
I'm using Adobe After Effects CC 2015 on PC and currently the setting the produces the optimized result for me on YouTube is:
Progressive field order
Square pixels aspect (1.0)
this is for a 1080p animation, and even with this bombastic hugh files the result is as follows:
1) There is a YouTube preset in Adobe Media Encoder. Are you using it? It works very well.
2) That actually doesn't look bad for a video file that has had the snot compressed out of it! You can't really expect to maintain the look of pristine video on YouTube. It isn't going to happen.
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA