The root ball on the driveway is the only picture of the tree anybody believes
A homeowner cannot picture the inside of their own lateral, and under this canopy the thing your camera finds usually has a culprit attached to it.
Thirty feet of old pipe with a root mass sitting in a joint explains an entire estimate without a word of persuasion. Nobody has seen the inside of a sewer line and everybody wants to.
Then bring the evidence up into daylight. A root ball pulled out and laid on the driveway beside the section of pipe it grew through is the single most passed around photograph a plumbing company here will ever take.
Narrate it while you are looking at it. Which joint let go, how old the pipe looked, what the homeowner had been noticing for months without connecting it to the drain.
Filming a monitor is its own small craft. A screen in daylight is mostly glare, so hood it with a jacket or shoot it in the truck, and hold still long enough that a viewer can read the picture.
The intown stock gives you the best material. Old laterals in short sections with a joint every few feet are close to an invitation, and a street of prewar bungalows in Decatur or Brookhaven is full of them.