The video shows a person welding a piece of metal to a yellow surface. The person is wearing gloves and using a welding tool to join the metal pieces together. The welding tool produces bright sparks and smoke as it melts the metal. The person then uses a hammer to tap the welded area, presumably to check the strength of the weld. The video provides a close-up view of the welding process, showing the bright light and sparks produced by the welding tool.