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Cardboard can generate natural-sounding voiceovers from a text script using AI. Type your script, pick a voice, and the generated audio is automatically placed on your timeline — no recording equipment needed.

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Generating a voiceover

1

Open the voice panel

Click the Voiceover button in the editor toolbar, or type your request directly in the AI Chat panel.
2

Write your script

Type or paste the text you want spoken. Scripts can be up to 5,000 characters long.
3

Choose a voice

Select from one of 10 preset voices. You can preview each voice before generating.
4

Adjust settings

Fine-tune stability, similarity, style, and speed to get the exact tone you want.
5

Generate

Click Generate and Cardboard creates the voiceover. The audio clip is automatically placed on the timeline at the playhead position, complete with word-level timestamps.

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Choosing a voice

Cardboard includes 10 preset voices to choose from:

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Voice settings

Fine-tune how the voice sounds with these controls:
  • Stability — Higher values produce more consistent, predictable delivery. Lower values add more expressiveness and variation.
  • Similarity — How closely the output matches the original voice model. Higher values sound more like the preset.
  • Style — Controls the stylistic intensity of the voice performance.
  • Speed — Playback speed from 0.5x (half speed) to 2x (double speed).
  • Speaker boost — Enhances clarity and presence of the voice.

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Managing voiceovers

Once a voiceover is on the timeline, you can:
  • Trim it like any other clip by dragging the edges
  • Move it to a different position on the timeline
  • Adjust volume using the clip inspector
  • Add fades for smooth audio transitions
  • Regenerate with different settings if you want a different take
Generated voiceovers automatically include word-level timestamps, which means Cardboard can generate perfectly synced captions from them.
You can also use the AI Chat panel to generate voiceovers — try “Add a voiceover that says: Welcome to our product tour” or “Generate a calm female voiceover reading this script.”

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What’s next?

Auto-Generated Captions

Add captions from your voiceover automatically.

Music & Audio

Add background music and sound effects.