The video shows a close-up view of a motorcycle's engine. The camera focuses on the chain and sprocket, which are part of the engine's transmission system. The chain is made of metal and has a series of interlocking links. The sprocket is a circular gear with teeth around its circumference. The engine is likely running, as the chain is in motion. The lighting in the video is dim, and the background is blurred, drawing attention to the chain and sprocket.