In the video, a person is seen using a knife to chop onions on a wooden cutting board. The person is shown cutting the onions into small pieces and then spreading them out on the board. The person's hands are visible in the video, and they are wearing a black shirt. The cutting board is placed on a white surface, and the knife used is silver in color. The onions are white and appear to be fresh. The person's movements are quick and precise as they chop the onions.