In the video, a man is seen demonstrating how to attach a bike mount to a bicycle. He starts by showing the mount and then proceeds to attach it to the bike. The man uses his hands to secure the mount in place, ensuring that it is firmly attached to the bike. He then tests the mount by adjusting it to show how it can be moved and positioned. The video provides a clear and detailed demonstration of how to attach a bike mount to a bicycle, making it easy for viewers to follow along and understand the process.