In the video, a person is seen painting a black triangle on a white canvas. The person uses a brush to apply the paint, and the triangle appears to be filled in completely. The person's hand is visible in the frame, and they seem to be focused on the task at hand. The background is plain and does not distract from the painting process. The video is shot from a close-up angle, allowing viewers to see the details of the brush strokes and the texture of the paint.