In the video, a person is seen writing on a piece of paper with a green marker. The person writes down a series of numbers and then writes down the binary code for each number. The binary code is written in green ink and is written next to the corresponding number. The person then writes down the decimal code for each number and the binary code for each number. The video is shot from a close-up angle, focusing on the person's hand and the paper. The person's hand is steady, and the writing is neat and legible. The video is shot in a well-lit room, and the background is blurred, keeping the focus on the writing.