I have a solution for you , if its worth $50 to you , it will let you remove the youtube watermark, add your own watermark/and clickable link . and if your video is ever removed from youtube it can play a random other video or a hardcoded default video , all while still having your videos hosted at youtube.
Or i will trade you watermark with no link for the ability to never have a dead video
i.e. you would use my embed code instead of youtubes