How to get a generated product's proportions right from reference photos
Send Vizard Agent photographs of the real product and say they are references for its proportions rather than material for the video. It compares each generated shot against them, works out what is out of scale or in the wrong place, and rebuilds those shots to the corrected proportions while the photographs themselves never appear.
What do you type into Vizard Agent?
Say what the photos are not for. Without that line they are perfectly reasonable material for the edit, and you will find them cut into the video as product shots, which is a sensible reading of an unlabelled attachment. Then name the shot that is wrong and what is wrong with it.
Prompt
What does Vizard Agent actually do?
A generated product looks convincing and is usually the wrong size. Each shot has its own camera angle and distance, so "too tall" is true differently in each one, and a single correction applied to all of them fixes some and breaks others. Vizard Agent compares shot by shot instead. In the session behind this article it:
- Downloaded the reference photographs for a product film whose generated shots did not match the object, tiled them together and looked at each in turn.
- Straightened the photographs that were shot at an angle, since an angle makes a straight object look tapered, and checked the orientation of the new photographs.
- Compared the proportions shot by shot against the generated frames and assessed what was wrong in each one separately.
- Prepared the references in a form the regeneration could use and regenerated the affected shots at the corrected proportions.
- Extracted frames from the new shots and checked the product's proportions closely in each, because a shot rebuilt to fix one proportion can arrive with another one wrong.
When does this not work well?
References fix proportions, not identity. Fine detail such as a texture, a moulding line or the exact shape of a control is not reliably reproduced from photographs, and a product whose appeal is in that detail may need real footage instead. With one angle only, depth cannot be inferred, and photographs taken at a strong angle skew the measurements.
Common questions
Will my photos appear in the video? Not if you say they are references. Vizard Agent keeps them out.
How many photos does it need? More than one angle. Vizard Agent will say if depth is unclear.
Can it fix just one shot? Yes. Name it and Vizard Agent leaves the others alone.