The video shows a person's hand turning a bolt on a red metal frame. The frame has a pulley attached to it, and the person is adjusting the tension on the pulley. The background is snowy, indicating that the video was likely taken outdoors in a cold environment. The person's hand is gloved, suggesting that they are taking safety precautions while working with the machinery. The pulley is made of metal and has a round shape with a groove in the center. The bolt being adjusted is located on the side of the pulley and is being turned clockwise.