Video processing shouldn't take longer than a few hours at most (and may be longer for higher res formats). How long has yours been showing that it's still processing? Here's a few tips for videos stuck in upload too: https://goo.gl/gH99rS
Just to confirm, have you tried using uploading using a different device/browser? If yes, please reach out to our Creator support team for in depth help: https://goo.gl/BxLi8H