In the video, a man is seen standing in front of a wall with a square cutout. He is wearing a green shirt and is holding a caulking gun in his hand. The man is applying caulk around the edges of the cutout. He starts by applying the caulk along the top edge, then moves to the bottom edge, and finally to the sides. After completing the application, he uses a tool to smooth out the caulk, ensuring it is evenly distributed and free of any air bubbles. The man's movements are precise and deliberate, indicating that he is experienced in this task. The video provides a clear view of the process, with the man's actions and the caulking gun being the main focus.