The video shows a person cutting an onion on a green cutting board. The person first cuts the onion in half, then proceeds to dice it into small pieces. The person is wearing a ring on their left hand, and the knife used for cutting is a large chef's knife. The cutting board has some stains on it, indicating that it has been used before. The onion is white and appears to be fresh. The person's movements are precise and careful, suggesting that they are experienced in using a knife.