In the video, a person is seen demonstrating how to adjust the brakes on a bicycle. The person's hand is visible, and they are using a tool to make adjustments to the brakes. The bicycle appears to be parked on a street, and the person is standing next to it. The video is shot from a close-up angle, focusing on the brake area of the bicycle. The person's movements are deliberate and precise as they make adjustments to the brakes. The video provides a clear view of the brake mechanism and how it works.