Two support models can use video for different reasons
One customer needs a known setup procedure for a supported device. A maintained walkthrough, matching manual and success check may be sufficient. Another reports an installation problem whose physical context is unclear; an agent may need to observe it and ask questions.
Both hypothetical cases use video, but for different jobs: reusing an explanation versus gathering case-specific evidence. Choose the next step around the unresolved question rather than requiring every issue to begin with self-service or end with a call.