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Every scene has one or more layers behind the presenter. Ask the tuning chat to list them and it will tell you what each scene has and when each layer is on screen.
“What backgrounds does scene 3 have?”

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Changes that happen instantly

These touch settings, not pictures, so nothing is generated and nothing is charged.
  • Hide or show a layer.
  • Blur it, so the presenter reads more clearly against a busy image.
  • Slow motion across a still, drifting in, out or across. Useful on a photograph that would otherwise sit dead on screen.
  • Fade between one layer and the next.
  • Move a boundary — when a layer starts and ends.
Moving a boundary makes its neighbours stretch or shrink to fit. No layer can go below a second and a half, and if your request would push one under that, the chat explains rather than doing something surprising.

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Changes that generate something

These show an approval card first.
  • Another take of the same idea, when the composition is right but the picture is not.
  • A new image from your description.
  • A short video clip, either a new one or motion added to the image already there.
  • Your own picture, used exactly as supplied.

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Image or video?

A still image with slow motion across it is cheap, quick, and right for most scenes. A generated video clip earns its cost when the movement is the point: a product in use, a place, an atmosphere that a static frame cannot carry.

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Writing a good motion prompt

The single most useful habit when asking for a video background:
Describe what happens in the scene, not the camera. “Steam rising from a coffee cup, morning light on the table” gives you something alive. “Slow zoom in” gives you a lifeless drift you could have had for free with motion across a still.
Animation can only move what the picture already contains. Asking for a person to walk into an empty room will not add them. If you need something that is not there, generate a new image first, then animate that. Generated clips run between 5 and 15 seconds. If a scene needs longer than the clip, the chat will offer to shorten the window or split it across two layers.

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While a clip renders

Video generation takes minutes. The preview keeps playing with a placeholder in the slot, and the real clip swaps in when it is ready. You can keep working meanwhile.
If a clip fails, its scene keeps the placeholder and shows a Regenerate action. A placeholder left in place will appear in the finished video, so clear any failed background before you render. This is deliberate: it makes you look, rather than quietly shipping a gap.

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Deleting, and the safer alternative

Hiding a layer takes it off screen and keeps it. Deleting removes it, and its time is given to its neighbours, which changes the timing of the scene. When in doubt, hide. You can always delete later; you cannot un-delete.

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Changing several at once

Ask for a setting across a whole story — “blur every background”, “add slow motion to all the stills” — and the chat shows one card covering all of it. One approval, and one undo for the lot.

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Next

Narration

Change what the presenter says, and what follows from it.

Events, presenter and scenes

On-screen text, where the presenter stands, and scene order.