In the video, a person wearing blue gloves is seen using a putty knife to apply a brown substance to a wooden surface. The substance appears to be a wood filler, and the person is spreading it evenly across the surface. The wooden surface has a natural wood grain pattern, and the filler is being applied to a specific area where there is a gap or hole. The person's movements are precise and deliberate, ensuring that the filler is applied smoothly and without any visible imperfections. The video provides a close-up view of the process, allowing the viewer to see the texture of the filler and the wood grain clearly.