In the video, a man is standing in front of a whiteboard with various mathematical equations written on it. He is wearing a plaid shirt and has a beard. The man is holding a marker in his hand and appears to be explaining the equations to someone. He is gesturing with his hands as he speaks, and at one point, he points to a specific part of the whiteboard. The whiteboard has several lines of text and diagrams, including circles, lines, and numbers. The man seems to be engaged in a serious conversation, possibly about the content on the whiteboard.