The video shows a close-up of a cannon being fired. The cannon is large and has a long barrel. As the cannon is fired, a large cloud of smoke is released from the barrel. The smoke is thick and billowy, and it fills the screen. The cannon is positioned on a platform, and there is a person standing next to it. The person is wearing a helmet and appears to be operating the cannon. The background is not visible due to the smoke. The video is shot in slow motion, allowing for a detailed view of the cannon and the smoke.