In the video, a man is seen using a sprayer to apply a substance to a wall. He is wearing a mask and gloves, indicating that the substance may be hazardous or require protection. The sprayer is bright green, and the wall appears to be made of concrete. The man is methodically moving the sprayer back and forth, ensuring that the substance is evenly distributed across the surface. The video does not provide any context or information about the purpose of the substance or the location of the wall.