A camera can travel past a crack, a branch, or a change in pipe material in a few seconds. A recording that plays quickly or jumps between sections can make it hard to tell whether a detail was inspected or simply passed.
Keep the original recording and note timestamps
Ask for the complete video along with any shortened clip. Record the access point and direction. If you are comparing proposals, give contractors the same version so they can refer to the same timestamps.
Ask for a slow pass at any key finding
A technician can pause near a visible feature and show the approach and departure when access allows. Ask which part of the line could not be inspected and whether another pass could answer the specific question affecting the repair.
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