I really don't like YouTube either. I only plan on using them to include the videos in my Steem posts.
MP4 files should upload easier to DTube. The most effective method I have found is to upload to YouTube and then download the file in the YouTube MP4 format. Everything seems to work well then. This is a strange way of doing things, hopefully an area DTube can fix sooner rather than later.
I'm trying that out, and see if it works for me. But I also hope that Dtube fixes his stuff, because I see more and more people complaining and moving away from Dtube.