In the video, a bald man wearing glasses and a blue shirt is standing in front of a blue background. He is pointing to a whiteboard that has a graph of a parabola with a line passing through it. The graph also has a triangle and a circle drawn on it. The man is explaining the graph and the mathematical equations written on the whiteboard. The equations include algebraic expressions and trigonometric functions. The man appears to be teaching or lecturing on the subject matter.