In the video, a person is seen drawing diagrams on a piece of graph paper. The person uses a black pencil to draw straight lines and curves, creating a diagram that appears to be related to electronics or electrical engineering. The person's hand is visible in the frame, and they are wearing a gray sweater. The graph paper has a grid of squares, which the person uses to ensure that the lines are straight and even. The person's movements are deliberate and precise, indicating that they are experienced in drawing technical diagrams.