In the video, a person is seen cutting an onion on a purple cutting board. The person starts by cutting the onion in half and then proceeds to slice it into smaller pieces. The cutting board is placed on a kitchen counter, and there is a knife visible in the person's hand. The person's movements are precise and careful as they slice through the onion. The onion pieces are then placed on the cutting board, and the person continues to cut them into smaller pieces. The video provides a clear view of the cutting process, and the person's technique is efficient and precise.