In the video, a person is seen using a yellow machine with a black knob on it. The person's hand is shown turning the knob to the right and then to the left. The machine appears to be a piece of equipment that is used for some sort of work or task. The person's hand is visible throughout the video, and the knob is the main focus of the action. The background is not clearly visible, but it seems to be an indoor setting. The person's hand is steady, and the knob is turned smoothly. The video does not provide any additional context or information about the machine or the task being performed.