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Once you approve your script, AI Voiceover takes over and replaces your original audio track — background noise, filler words, inconsistent pacing and all — with a clean, professional AI-synthesised narration. The voiceover auto-synchronises to your video timeline so every caption, visual effect, and on-screen action lines up precisely. You preview the full result before anything is finalised, and you can fine-tune individual segments without regenerating the entire track.

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Steps

1

Select a voice

Open the Voiceover panel in the editor. Filter the voice library by language, gender, accent, and style. Click Preview on any voice to hear a 15-second sample narrated with your own script text, then click Select to apply it to your project.
2

Generate the voiceover

Click Generate Voiceover. AI Studio synthesises the full narration and aligns it to the video timeline automatically. Generation typically takes 1–3 minutes for a 5-minute video. A preview plays automatically when it completes — listen through the full video before finalising.
3

Fine-tune sync

If any segment sounds slightly out of sync with the on-screen action, click that segment in the timeline and drag the Trim handles to adjust its start and end point. Click Re-sync to let the AI re-align that segment to the updated timing without touching the rest of the track.
4

Fix pronunciations

Click the Pronunciations button in the Voiceover panel. Add a phonetic spelling for any product name, technical term, or acronym the AI mispronounces — for example, “DemoKraft” → “DEH-moh-kraft”. Then click Re-generate Segment to apply the correction to just that sentence. Pronunciation entries are saved workspace-wide and applied automatically in all future projects.
5

Add background music (optional)

Open the Audio panel and click Add Background Music. Choose a track from the built-in royalty-free library. Filter by mood: Neutral, Upbeat, Cinematic, or Minimal. Set the volume slider to 15–25% of the voiceover volume — the recommended level for B2B content — and enable Auto-fade to automatically lower the music whenever someone is speaking.

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Voice Consistency Across Projects

Keep all your workspace content sounding like one brand by setting a default voice:
  1. Go to Settings → Brand Kit.
  2. Under Default Voice, select your preferred voice.
  3. All new projects will open with this voice pre-selected. You can override it per project at any time.
Set a Default Voice in your Brand Kit to maintain a consistent brand experience across your entire product demo library, onboarding content, and knowledge base — without having to re-select it for every new project.

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Translating into 39+ Languages

To generate a fully translated, natively voiced version of your demo, see Multilingual Support. Each language version produces a standalone editable project with its own script, voiceover, and export settings.