The video shows a green chalkboard with a mathematical equation written on it. The equation is "OAO = 2n^2 - n^2(1+f(a))^2/f(a)". The chalkboard is framed by a black border with white dots, resembling a film strip. The video is shot from a top-down perspective, and the chalkboard fills the entire frame. The background is a solid green color, and the text is written in white chalk. The video does not show any movement or change in the scene, and there are no other objects or people visible.