In the video, a person is seen holding a large knife and cutting an onion. The onion is placed on a green cutting board, and the person is using a chopping motion to slice the onion. The knife is silver and appears to be sharp, as it cuts through the onion with ease. The person's hand is steady, and they seem to be experienced in using the knife. The onion is being cut into thin slices, and the person is making quick, precise cuts. The background is blurred, but it appears to be a kitchen setting.