In the video, a person is seen painting their fingernails with black nail polish. The person starts by applying the polish to their thumb, then moves on to their index finger, middle finger, ring finger, and finally their pinky finger. The person takes care to apply the polish evenly and carefully, ensuring that each nail is fully coated. The background is a plain green surface, and there are no other objects or people visible in the video. The person's movements are steady and precise, indicating that they are experienced in applying nail polish. The black color of the polish is glossy and shiny, and the person's nails are long and well-manicured.