[BillyMac]

Originally Posted by Raymond

Well, actually the first foot to touch may return to the floor if A1 executes a proper jump stop.

I don't believe that the player in the video meets the following parameters for such a legal jump stop:

Traveling is moving a foot or feet in any direction in excess of prescribed limits
while holding the ball. The limits on foot movements are as follows:
A player, who catches the ball while moving or dribbling, may stop,
and establish a pivot foot as follows:
a. If both feet are off the floor and the player lands:
3. On one foot, the player may jump off that foot and simultaneously land
on both. Neither foot can be a pivot in this case.
After coming to a stop and establishing a pivot foot:
a. The pivot foot may be lifted, but not returned to the floor, before the ball is
released on a pass or try for goal.
b. If the player jumps, neither foot may be returned to the floor before the ball
is released on a pass or try for goal.
c. The pivot foot may not be lifted before the ball is released, to start a dribble.

Once that second (nonpivot) foot comes down, his legal options become more restricted. And even further restricted if the pivot foot is lifted (no dribble allowed).

Nevadaref and Raymond make great points. It has always been my contention that block/charge is not the most difficult call in basketball, it's traveling. That's my story and I'm sticking to it.