In the video, a person is seen using a knife to spread chocolate frosting on a chocolate cake. The cake is placed on a white plate, and the person is wearing a pink shirt. The knife is silver and appears to be a serrated knife. The chocolate frosting is thick and smooth, and the person is spreading it evenly across the top of the cake. The cake itself has a rich, dark brown color and appears to be moist and dense. The person's movements are steady and precise, indicating that they are experienced in cake decorating.