In the video, a person is seen working on a car's brake system. The person is wearing a white glove on their left hand and is using a wrench to loosen the brake caliper. They then remove the brake rotor and replace it with a new one. The person tightens the brake caliper with the wrench and checks the brake rotor to ensure it is properly installed. The video provides a clear view of the brake system and the person's hands performing the task.