I'm not experienced so don't mind me if i have no idea wat i'm talking about, but to me those deadlifts look good. The one thing maybe you could work on is setting the chest before each rep instead of just trying to do all 5 reps as quickly as possible. I noticed that you didn't bother to raise your chest before each rep and so you kind of became a bit hunched over (not much though). That's the only suggestion i have, but either than that looking strong. Dam 315, i wish i could dead that