In the video, a person is seen using a tool to adjust the tension of a belt. The tool appears to be a tensioner, which is used to maintain the tension of the belt. The person is shown using the tool to tighten the belt, ensuring that it is properly secured. The belt is black and appears to be made of rubber or a similar material. The tool is silver and has a lever that the person is using to adjust the tension. The person's hand is visible in the video, and they are wearing a ring on their finger. The background is blurry, but it appears to be an outdoor setting.