Cutting roots can restore flow, but roots can grow back through the same open joint or crack. Remaining roots may also catch paper and debris.
Check whether roots returned at the same joint
Ask for a camera inspection once the pipe wall is visible. Keep the footage, the distance from the cleanout, and any above-ground locator mark. On a repeat visit, compare footage from the same access point. Distance helps narrow the search, while the joint and nearby pipe features help confirm the location.
Use the footage to decide what to repair
One separated joint with sound pipe on both sides may be a candidate for a localized repair. If several joints admit roots, ask the contractor to show every visible entry point before pricing the work. If the camera cannot pass, ask what remains uninspected and whether another access point would help.
Bring prior footage and note how long the line flowed after cutting and which fixtures backed up first. SoCal Rooter can review the evidence and discuss sewer line repair options.