In the video, a young man is seen writing on a whiteboard with a red marker. He is wearing a black jacket and has short brown hair. The whiteboard has several mathematical equations written on it in red ink. The young man is explaining the equations as he writes them. He is speaking to someone off-camera, possibly a teacher or classmate. The background of the video is a classroom setting with a wooden door and a poster on the wall. The young man appears to be focused and engaged in his work.