In the video, a person is seen cutting an onion on a wooden cutting board. The person uses a large knife to slice the onion into thin pieces. The onion is white and appears to be fresh. The person's hands are visible, and they are wearing a red and black plaid shirt. The cutting board is placed on a red surface, and there are no other objects visible in the frame. The person's movements are steady and precise as they slice through the onion.