In the video, a person is seen holding a piece of copper pipe in their left hand and a small brush in their right hand. The person is using the brush to apply a substance to the inside of the copper pipe. The substance appears to be a dark gray color, and the person is applying it carefully to ensure that the entire inside of the pipe is covered. The person's movements are steady and precise, indicating that they are experienced in this task. The background is a wooden surface, and there is a small container of the substance next to the pipe. The lighting is bright, and the focus is on the person's hands and the pipe.