Hmm video processing shouldn't take longer than a few hours at most (and may be longer for higher res formats). Here's a few tips for videos stuck in upload too: https://goo.gl/gH99rS
Appreciate the info. Please send a feedback report directly from YouTube with these steps: https://goo.gl/WdI0BK . While every individual report may not get a direct response back, we do review everything and use the details to investigate and fix issues.