In the video, a person is seen holding a knife in their hand. The knife has a black handle and a sharp blade. The person is using their thumb to run along the edge of the blade, demonstrating its sharpness. The background is a solid red color, providing a stark contrast to the black knife. The person's hand is steady, and the movement is smooth, indicating that the knife is indeed sharp. The video is shot in close-up, focusing on the knife and the person's hand, making it easy to see the details of the knife and the person's movements.