If you were coming here to learn how to feed that snake (if it's yours) then you came to the right place. If a snake hits his head multiple times like that it could cause discomfort for the snake and cause him to not eat. I know that many times while feeding one of mine will miss and smack the side of the tub. After that they tend to just shy away from the food.
If you're going to feed like that you can place the feeder in without the plastic bin so the snake can just grab it. You probably should have put down the video recorder and fixed the issue rather than watching it happen.