Televised sewer from inside clean out on stack. Cast iron in house is heavily scaled but we do not se any holes or breaks in the pipe. The clay tile is broken on the bottom at the drop to the city main sewer but it does not appear to be causing any problems at this time. There are light roots and a few light cracks on the sewer in the clay tile as we come back towards the house. Suggest installing an outside clean out in order to have a way to rescale the cast iron pipe and flush the scale out to the city main. One the cleanout is installed the pipe could be lined for the crack or roots but the location at the city main would need to be excavated.