Sumo DL Form Check

First post/thread on here, so hey!

Thought I’d seek some feedback of people more experienced lifting than me. Video was originally taken to see if the knees were caving in or not. I really had to fight for the lockout on the last rep but it all felt easy off the floor.

Well its tough to tell what is completely going on here from the angle. It looks like your hips are rising to some degree before the bar leaves the floor. If you could get a good side angle it would be easier to discern whats happening.