A sewer line camera is a very small and flexible camera attached to a cable, much like a drain snake. The plumber will use the snake to get to the point at which a clog or break may exist in the hopes they can remedy the problem with as little invasive behavior as possible. To inspect pipes, plumbers use a sewer video camera connected to a flexible cable. They usually insert the cable into the main sewer line cleanout. Using a monitor, they watch as the camera moves through the plumbing line.