In the video, a person is seen working on a large engine. The person is using a tool to make adjustments to the engine. The engine appears to be quite large and complex, with various components visible. The person is focused on their task, carefully making adjustments to ensure that the engine is functioning properly. The video provides a close-up view of the engine and the person's hands, allowing viewers to see the intricate details of the engine and the precision required for the task.