Hips are coming up early.
Basically, the thing I was coached to remember, "Hips and shoulders rise at the same time". Right now, your knee extensors are doing their job of extending the knee, but the hip extensors are not doing their job of holding the pelvis in place while they're extending, in order for the bar to rise at the same rate the hips do. Either focus on "hips and shoulders at the same time" or "chest up, push the floor away".
I hope I was able to explain that. But besides that, looks alright too my eye.
P.S. Get some weightlifting shoes.