FPMatrix — One real pair, one finished 15-second video Free filming exercise. No AI video generation. Not a customer success claim. 1. Choose earrings you own or have permission to film. Use only verified facts. 2. Before starting, note your usual planning method and what is difficult. 3. Use a phone, window light, matte paper and ruler. Record vertically. 4. Capture a wide setup shot, then four raw takes (5–8 seconds each): A. Whole pair. B. One visible detail. C. Ruler in the same plane plus gentle movement. D. Clear final view. 5. Keep original takes. Edit to 3 + 4 + 5 + 3 seconds. No music is required. 6. Watch the exported video: is the item in focus, scale readable, and text factual? 7. Note actual preparation and filming time separately. Do not invent a before/after time saving. 8. Record what you changed and whether you would post the video. A failed attempt is useful feedback. Optional feedback: contact@fpmatrix.cn Tell us: seller/maker or general tester; not started / attempted / filmed raw takes / exported a finished clip; first blocker; what the guide helped with; what you would normally use. No private footage or product data is required. Feedback is not a marketing subscription. Case-study evidence, if separately agreed: source/owner permission, the plan used, original takes, exported clip, factual labels and permission to publish. Internal demonstrations must be labelled internal, never customer results.