In the video, a person is seen holding a can of soda in their hand. The can is pink and has a silver top. The person uses a piece of tape to cover the top of the can, leaving a small opening. They then use a sharp object to cut a hole in the tape, creating a small opening. The person repeats this process on the other side of the can, creating two small openings. Finally, they use a lighter to heat the tape, causing it to shrink and seal the openings. The person then shakes the can, demonstrating that the seal is tight.