The video shows a person's hands using a brush to spread a dark liquid, possibly a sauce or glaze, over a sheet of seaweed that is placed on a bamboo mat. The person's hands are visible, but their face is not shown. The seaweed is dark green in color and appears to be wet, as the liquid spreads easily over its surface. The bamboo mat has a natural beige color and is held in place by white strings. The brush used is made of wood with a metal ferrule and white bristles. The person's movements are steady and precise, ensuring even coverage of the liquid.