Are these clips real failures from client work?
No. The failure classes are real and were read off delivered runs, but every clip here was generated on purpose, on an invented product, from the prompt printed under it. No client product appears on this page. That is also why the whole page can be shown: nothing in it needed anyone's permission.
Why does an AI product video change the product halfway through?
Because the model was given a suggestion rather than a specification. A photograph shows one side of an object; the moment the camera moves, the model has to invent the rest, and anything the prompt did not lock is free to change. Leg counts, materials, colors, label text and size all drift for the same reason: nothing wrote them down.
What is the difference between a broken prompt and a locked prompt?
The broken prompt describes a mood: cinematic, luxury, golden hour. The locked prompt names the reference image as the product, states the part count, the material by its trade term, the color as a hex, the size in centimeters, tells the model that text is never generated, and lists what must not happen. Both were sent with the same reference image to the same engine at the same length.
Does the same lock work for a person or a character in a video?
Yes. A multi-angle reference sheet holds a face the same way it holds a product, and the checks afterwards are the same idea with different questions: is it the same face, the same hair, the same wardrobe at every frame. The mechanism is identical; only the checklist changes.
How is color drift in a video measured?
In CIELAB, from the files this page serves. Twelve frames are sampled across the clip, the product window is read per frame, and two numbers come out: how far each frame sits from the clip's own mean, and how far the clip sits from the reference image both prompts were given. The second one is the figure printed on the tiles. A distance in CIELAB maps roughly to how different two colors look to a person, which is why it is used rather than a screenshot argument.
Can you run these five checks on my product before I commit?
Yes. Send four SKUs, ideally ones that break differently: something printed, something with hardware, something color-critical, something you have never managed to shoot well. We build the reference sheet for each, run the locked format, and hand back the clips with the check results beside them, in five to seven days.