In the video, a person is holding a small wooden piece with two holes in it. The person then places the wooden piece on the body of a violin, which is red in color. The person then rubs the wooden piece on the violin, creating two white marks on the violin's body. The person repeats this action several times, rubbing the wooden piece on the violin's body and creating more white marks. The video ends with the person holding the wooden piece up to the camera.