In the video, a person is holding a paintbrush and dipping it into a can of paint. The person then proceeds to paint the railing of a staircase. The camera focuses on the brush as the person moves it along the railing, applying the paint. The video captures the process of painting the railing in detail, showing the brush strokes and the color of the paint. The person's hand is visible as they hold the brush, and the background shows a staircase with white railings.