In the video, a man is seen wearing a red shirt and holding a clear plastic ball with a string attached to it. He is demonstrating how to properly tie a knot in the string. The man is using his hands to manipulate the string and the ball, showing the viewer how to create a secure knot. The background is a solid blue color, which contrasts with the red shirt and the clear plastic ball, making the demonstration easy to follow. The man's movements are deliberate and precise, ensuring that the viewer can understand the process of tying the knot.