The video shows a person using a machine to sharpen a knife. The person is holding the knife with one hand and using the machine with the other hand. The machine appears to be a belt sander, which is used to smooth out the surface of the knife. The person is carefully moving the knife along the belt of the sander, ensuring that the entire blade is evenly sharpened. The knife has a silver blade and a black handle, and the machine is mostly gray with a red lever. The background is a workshop setting with various tools and equipment visible.