Blood spot on his neck changes position.
The "blood" squirts out from under the shirt and disappears mid-air and never hits the floor.
I think more blood was added for the viideo than the blood/squib pack under his shirt.

It's a squib pack with fake movie blood in it.
Whether he's dead or not doesn't matter since he isn't coming back. -->They might as well have really killed him.

Do a frame-by frame and the hole in his neck isn't in sync with his body movement.
Then the blood shoots out from under the shirt instead of the "hole"