How to swap what someone is holding for a different object
Ask Vizard Agent to replace the object and clean up what it was producing, not just to swap one shape for another. It builds a reference image of the new object, measures where the old one met the hand and the mouth, and tests several placements against those contact points before committing to a composite.
What do you type into Vizard Agent?
Name the object that is leaving, the one that is arriving, and anything the old one produced, such as smoke or steam. Then describe the contact points. The shape of the new object is the easier half of the brief. Whether it is gripped in the whole fist or pinched between two fingers decides whether the shot reads at all.
Prompt
What does Vizard Agent actually do?
A held object is anchored to a person in two or three places at once. Drop a new shape in and the fingers curl around nothing, or it floats a centimetre from the lips. So Vizard Agent gets the replacement approved before it touches the footage, and finds the placement by trying positions rather than calculating one. In the session behind this article it:
- Surveyed the clip with a contact sheet of frames, then inspected the close-up at fine timing to find the object's full window.
- Generated a photorealistic reference of the replacement and showed it for approval before any compositing.
- Built a transparent overlay of the new object, plus a feathered patch to clean away the old object and its smoke.
- Previewed the overlay on a neutral background to check its shape, then assembled a draft composite and sampled it at several moments.
- Measured the object's visible area to align it to the mouth, and tested placement variants against the mouth and the hand before locking it.
When does this not work well?
When the two objects are very different in size or shape. A small object replaced by a much larger one leaves a hand that could not possibly be holding it. Fast movement or partial occlusion makes the tracking Vizard Agent relies on unreliable, and reflections and shadows show the old object too.
Common questions
Can it generate the replacement? Yes. Vizard Agent makes a reference first and shows it to you.
What about smoke or steam? It's part of the removal. Tell Vizard Agent what the old object was producing.
Will the fingers look right? Vizard Agent composites them back over the new object where they wrapped around.