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Can’t find the prompt box? It’s hidden whenever Preview Agent’s chat panel is open, since the two can’t be open at the same time. Close the agent to bring it back.

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Generate

Write a prompt in the prompt box at the bottom of the canvas, then set:
  • Image mode / Video mode, and the model
  • Resolution and aspect ratio (in the More options popover)
  • Duration and audio on/off (video)
  • Quality (some image models)
  • Web search on/off
  • Seed
  • Number of outputs
  • Auto-enhance prompt (supported models): rewrites your prompt for the model before generating. Off by default.
  • Multi-shot (video, supported models): ask for one video made of several distinct shots. Pair it with Auto split to cut the result into individual takes afterward.
With the caret at the start of the prompt, ↑ steps back through your previous prompts for this project and ↓ returns to your draft. The placeholder reminds you once you have history.
Hover the generate button to check credit cost before running a job. See Project Analytics. If Generate is greyed out, hover it anyway: the tooltip names the exact blocker (“Enter a prompt”, “Not enough credits”, “Describe shot 2”). When your balance can’t cover the batch, Generate stays disabled until you add credits or shrink the job.

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Reading the model menu

  • The grey chips show each model’s resolution range, plus a duration range for video models.
  • Video models show more settings that affect generation cost, so choose carefully.
  • Some models let you set Start and End Frame independently; others require a Start Frame before you can add an End Frame.

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Negative Prompt

If supported, access Negative Prompt from the icon at the prompt box’s lower right.

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Audio

If supported, toggle Audio from the speaker icon at the prompt box’s bottom right.

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Start and end frames (video)

Set a start or end frame four ways: Click to Pick on the canvas, Choose from Library, Upload from Device, or the target icon on a canvas file.

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Middle frames, keyframes, and video editing (model-specific)

  • Middle: Hailuo 3 Max adds a Middle slot between Start and End, with a time chip for when it should hit. It needs both a start and end frame plus an image or video reference.
  • Keyframe strip: FLUX 3 Video takes up to 10 keyframes, each with its own time chip, instead of start/end frames (the two can’t combine).
  • Edit: Seedance 2.5’s Edit switch turns the prompt box into a video editor: add one video reference (4–30s) and describe the change; ratio and duration lock to that clip.

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Add references

Type @ to open the reference menu: Recently used, Gen History, Uploads, and your library by category (Characters, Locations, Props, including specific variations). Pick something and it appears in the prompt box as a chip. See Referencing with @ for the full menu. Each model has its own reference limit, shown beside the ref box in the prompt box’s top bar. Some video models also accept video references, sourced the same way. Location references are interpreted literally; for a specific angle, generate that angle first and reference the new image. Click to pick grabs references straight off the canvas, and holding Shift while picking keeps the picker open, so you can grab several files in one pass before hitting Done.

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Next steps