The video shows a person's hand turning the knob of a car's air conditioning system. The hand is seen turning the knob clockwise and counterclockwise, adjusting the temperature of the air conditioning. The car's interior is visible in the background, with the dashboard and other controls in view. The hand appears to be that of an adult, and the car's interior is modern and well-maintained. The air conditioning system seems to be functioning properly, as the hand is able to adjust the temperature with ease.