UGC-style video depends on small human movements. When testing Kling and Runway, inspect faces, hands and product contact. A generated person is not a real customer, regardless of how informal the clip looks.
Make the script demonstrable
Choose an explanation supported by the product. Holding a bottle requires consistent grip and scale; opening or assembly needs a separate action test. A good portrait does not establish reliable product contact.
Distinguish explaining a feature from claiming an experienced result. The latter needs evidence. Natural speech does not require fabricated customer history.
Inspect the pauses
Watch before and after speech for gaze, expression and hand errors. Check identity and product continuity. If sound is added later, assess final timing and lip movement.
Record the tested versions and workflow choices. Select on finished output and revisions. Use real creators or footage for actual experiences or precise actions.
