Are people in this thread really that clueless?
This is how you measure a vertical jump
Now look at the guys waist in that video. If he is say around 5'10" then his waist should be ~39" high. Now go forward and look how high his waist goes. It goes maybe 6" above the stack. 63"+6" = 69" - 39" = 30"
The world record for the vertical jump is 55". This is nowhere near that.