In the video, a person is seen working on a machine. The person's hands are visible, and they are using a tool to adjust a chain on the machine. The machine appears to be made of metal and has several cylindrical components. The person's hands move with precision as they work on the chain, suggesting that they are experienced in this task. The lighting in the video is bright, and the background is blurred, focusing the viewer's attention on the person's hands and the machine.