Debatable
Probably not after the feedback.
Double check the sticky for filming angle on this lift. I can't see anything to do with you back.
You also seem to be wiggling around too much. Get the 5 steps nailed down as single, individual points of execution for every single rep. Then you won't have to fear injuring your back.
Narrow your stance, actually set your back by lifting the chest and keep the bar on your legs the whole time.