The video shows a close-up of a metal object being heated in a furnace. The object is glowing red hot, indicating that it is extremely hot. The furnace appears to be made of metal and is placed on a surface that is not visible in the video. The metal object is being rotated, possibly by a machine or a person, to ensure that it is heated evenly. The heat from the furnace is causing the metal to emit a bright red glow, and there are sparks flying off as the object is rotated. The video does not show any people or other objects in the frame, and the background is not visible due to the close-up shot of the furnace.