Solved: MP4 file exported is much larger than the original... - Adobe Support Community - 8783150
Is YouTube actually serving at an enhanced bitrate or are they nerfing the original video and labeling it 1080p HD and calling the original video an "enhanced bitrate" version? : r/DataHoarder
What is Video Bitrate and How Does it Affect Video Quality?
How to change the bitrate in After Effects - Quora