Case study
Why the thing your AI presenter points at vanishes from the ad
A fix that stopped AI presenters holding banknotes also deleted a prop one ad was built around, and a pointing line cut away to someone else. How we traced it, and what to check in your own AI video ads.
Key takeaways
- A rule that removes something for one shot can remove it from every frame the tool draws.
- Say what must stay as well as what must go, and put the keep rule next to the description of the person.
- A line that points at what the presenter is showing should never cut away to other footage.
- Check a fix in every framing, not only the shot where you first saw the problem.
When an AI presenter object is missing from the video, the ad stops making the point it was built around. A presenter who talks up something the viewer cannot see reads as a mistake, and a viewer who spots an odd detail starts to doubt the rest of the ad. A client asked us to look at an ad where exactly that had happened, and we fixed it the same day, in two rounds.
What goes wrong when the AI presenter object is missing from the video
An ad that leans on a prop only works if the prop is in every frame where the presenter refers to it. In this ad the starting photo showed a prop set down beside the presenter, and the script leaned on it: a line says, in effect, see this, it can all be yours. In the finished ad the prop was gone, and the line that referred to it cut away to a stock clip of someone else. The viewer was told to look at something that was not there.
The same risk runs through any AI-presenter ad built on a prop: a product, a document, a device on the desk. One missing detail is enough to make the rest look thrown together.
How our engineer traced it to an earlier fix of ours
The tool had lost the prop in every frame it drew, not only in the shot where it was first seen, and the cause was a rule we had added a few days earlier.
The tool draws several still frames of the presenter, a close-up, an angled shot and a later scene, and animates each line from one of them. All of them had lost the prop. Our engineer compared the starting photo with each drawn frame, then read the instructions the tool gives the image model for those frames.
The answer was an earlier fix of ours. A few days before, we had stopped presenters growing a third hand and holding banknotes that changed from frame to frame, partly by telling the model that nothing is held in the hands: no money, no phone, no papers. The model read no money as no money anywhere in the picture, and removed the prop set down beside the presenter.
The cutaway had a separate cause. The automatic edit treats a line as a good place to cut to a clip that illustrates the words, and nothing told it that a line pointing at the presenter's own frame must stay on him.
What we changed
We narrowed the old rule, added a keep rule, and gave the close-up and the pointing lines instructions of their own.
- The hands rule no longer mentions money at all.
- An instruction placed right after the description of the person asks that every object set down beside them stays untouched and clearly visible.
- The close-up is told to keep the object without changing its framing. An earlier wording, which asked for the object to be shown, came back as wide as the medium shot.
- When a later scene moves the presenter to a new place, the object goes with him.
- Lines that point at what sits beside him, such as look at these, check this out or right here, now stay on the presenter in every editing mode, with an open hand toward the object. The cutaway moves to the next line.
Our first correction still lost the object in two frames. What finally held it, in every framing tried that day, was dropping money from the hands rule entirely and stating plainly what had to stay.
What the business has now
The fix is live in the tool and was checked there the same day.
The prop stayed in the medium, close and angled frames drawn for that ad, and the pointing line stays on the presenter. The earlier fix still holds too: hands stay empty and natural. The work went in two rounds on the day it was reported, and the second kept the object in every framing checked.
What you can check yourself
- Compare every shot of your AI presenter with the starting photo. If something set down beside them is missing in one framing but present in another, look at the instruction that draws those frames.
- Find each line where the presenter says look, see or here, and watch what is on screen at that moment. Footage of someone else cut in there means the line is being read as a cue for a cutaway.
- Put the close-up next to the medium shot. If a shot asked to move closer comes back at the same width, that framing needs wording of its own.
- Watch the scene where the presenter changes place. An object left behind in the earlier frame means the keep rule is not travelling with him.
- After any change to how your AI videos are made, watch an earlier script again, not only the one that was fixed.
What to do next
Write rules for the reach you mean, and say what has to stay as well as what has to go.
- Every rule you give an AI model has a reach. Nothing in the hands is not the same instruction as no money.
- A keep rule protects what the ad depends on: name every object beside the presenter, and ask for it to stay untouched and visible.
- Keep a gesture and its object in the same shot, and tell the edit that a pointing line never cuts away.
- Ask whoever runs your video tool to walk one ad through every framing before it goes out, not only the shot that was changed.
Tracing an odd frame back to the instruction that caused it is the kind of work our engineers do for clients.
Questions people ask
Why did my AI presenter's prop disappear after a previous fix?
A rule written to stop one flaw often bans more than you meant. If an earlier instruction said no money, or nothing in the hands, the model drawing the frames can apply it to the whole picture and remove an object that was set down beside the presenter. Narrow the rule to the hands alone, then add a separate instruction that objects beside the person stay visible.
How do I stop an AI video cutting away on a line that points at the presenter?
The automatic edit reads a line as a cue to cut to footage that illustrates the words, and it has no reason to know that a pointing line is different. Tell the tool that lines referring to the presenter's own frame, such as look at these or right here, always stay on the presenter. Let the cutaway move to the following line instead.
Why did my close-up shot come back as wide as the medium shot?
When the wording only asks for the object to be shown, the tool can widen the shot to fit it in. Give the close-up an instruction of its own: keep the object, and keep the framing. Compare it with the medium shot before you use it.
How do I word instructions so an AI video tool keeps an object beside the presenter?
Place the keep rule right after the description of the person, and name what must stay: every object set down beside them, untouched and clearly visible. Keep the object out of rules about something else, such as the hands, where the wording can be read more broadly. Then check each framing, not only the one you were fixing.
Should I re-check older AI video scripts after changing how they are made?
Yes. A change to a shared instruction affects every script that uses it, and the flaw may show up in a framing nobody looked at. Watch an earlier ad after the change and compare each shot with its starting photo before you publish anything new.