In the video, a man is standing in front of a large screen, holding a marker in his hand. He is wearing a blue shirt and glasses. The screen displays a diagram with circles and lines, which the man is explaining. He points to different parts of the diagram as he speaks, and then turns to the side to point at the screen. The man appears to be giving a presentation or lecture, and he seems to be knowledgeable about the topic he is discussing. The room is well-lit, and there are no other people visible in the video.