Out in Green Valley, Garden Road and Twin Peaks, big lots mean big trees, and often a long sewer line running under the yard to the street. Oaks, pines and pepper trees send roots out looking for water, and any joint along that run that has opened up is an easy place to find it. Once roots get in, they thicken into a mat that catches everything going down the line.
The usual answer is to cut the roots and get the line draining again. That works for a while, but if the joint is still open, they grow back through it. On a long run the camera matters even more, because it shows which joint the roots are using, how far out it is, and whether there's more than one.
Then the fix matches what the camera found. One bad joint might need a spot repair or a liner, while a line with several problem spots is a bigger conversation. You get it explained in plain English with the options laid out, and the decision is yours.