The video shows a person drawing a diagram on a whiteboard. The diagram consists of a circle with intersecting lines and arrows. The person uses a red marker to label the parts of the diagram, including the "Ewing" and "Fall" arrows. The diagram appears to be a representation of a mechanical or engineering concept, possibly related to a machine or system. The person's hand is visible as they draw and label the diagram, and they seem to be explaining the concept as they go. The whiteboard provides a clear and unobstructed view of the diagram, making it easy to follow the person's explanation. The video is shot in a well-lit room, and the sound quality is clear. Overall, the video provides a detailed and informative look at the diagram and its components.