In the video, a person is seen using a brush to apply a substance to a wooden guitar. The guitar is red in color and has a black pickguard. The person is wearing a black jacket and is standing in front of a black table. The brush is being moved back and forth over the guitar's body, and the substance appears to be a clear coat or finish. The person's movements are deliberate and careful, ensuring that the substance is evenly distributed across the surface of the guitar.