Many drain line problems are hard to locate and every bit as hard to diagnose. Many times a sewer line camera inspection is a great tool to make use of when these conditions exist. But just like many specialized tools it must be used properly to be effective. Perhaps even more importantly the sewer video must be interpreted properly or an incorrect diagnosis can be made.
A sewer line camera inspection has unique identifiers. The video for the camera signals specific distances out from the point where the camera was inserted. Figuring how many feet of cable is inserted has in past times been quite inaccurate, so this is a marked improvement in terms of accuracy. Knowing the exact point of a problem also is very helpful in deciding what course of sewer repair action to take.