In the video, a person is seen holding a piece of paper with a diagram drawn on it. The person is using a pencil to point at various parts of the diagram, presumably explaining the different components and their functions. The diagram appears to be a schematic representation of an electronic circuit, with various symbols and lines indicating different parts such as resistors, capacitors, and transistors. The person's hand movements suggest that they are explaining the circuit's operation or how to build it. The video does not contain any audio, so the content of the explanation cannot be determined from the video alone.