In the video, a person is cooking a stir-fry dish in a pan. The person is adding diced tomatoes to the pan, which already contains diced vegetables. The vegetables are being sautéed in the pan, and the person is using a spatula to stir them. The pan appears to be on a stove, and the person is wearing a red shirt. The diced tomatoes are bright red and are being added to the pan in a clear glass measuring cup. The vegetables in the pan include green peas, orange carrots, and green celery. The person is stirring the vegetables and tomatoes together in the pan, and the dish appears to be cooking well.