In the video, a person is seen using a brush to apply a substance to a piece of leather. The person is holding the brush in their right hand and the leather in their left hand. They are applying the substance with care and precision, ensuring that the leather is evenly coated. The substance appears to be a liquid, possibly a type of finish or dye, which is being used to enhance the appearance of the leather. The person's movements are deliberate and controlled, indicating that they are experienced in this type of work. The leather itself is a rich brown color, suggesting that it may be a high-quality material. The background is a workshop setting, with various tools and materials visible, indicating that this is a place where leatherworking is done regularly.