In the video, a person is holding a knife and demonstrating how to open it. The person's hand is visible, and they are using their thumb to open the knife. The knife appears to be a folding knife with a black handle and a silver blade. The person's thumb is shown in close-up, and they are using it to push the blade out of the handle. The video is shot in a close-up angle, focusing on the person's hand and the knife.