This guy they are questioning now seems nervous and out of his depth.
The other video expert witness looks so pissed at this guy as if he's a complete simpleton.
I feel sorry for this guy in a way, he looks scared for his life. Though I am at least glad his lack of knowledge is making the prosecutions case look absolutely woeful.
One thing I have noticed is the prosecution are never smiling or showing any positive emotional states. In huge disparity to the Defence.