In the video, a person is seen using a piping bag to apply white frosting onto a cake. The frosting is applied in a circular motion, creating a decorative pattern on the cake. The person's hand is steady as they work, and the frosting appears to be of a thick consistency. The cake itself is not visible in the video, but the frosting is being applied in a straight line across the surface. The background is a plain, light-colored surface, which contrasts with the white frosting.