Why short-form videos need a voiceover
Voice holds attention. A narrated slideshow feels like someone is talking to you; a silent one feels like a slideshow. Voiceover also lets you say more than fits on screen, and it makes faceless content feel personal.
An AI voiceover generator gives you that narration without a microphone, a quiet room or retakes. In ReelFrames it's built into the editor, so narration, captions and slide timing are all connected.
How the AI voiceover generator works
Pick a voice
Choose from OpenAI and ElevenLabs voices. Preview them in the voice panel and pick one that suits your niche.
Narrate the slides
Each slide gets its own narration from its script. Change a slide's text and re-voice just that slide.
Timing and captions follow the voice
Slides are timed to their narration with a small lead-in and tail so nothing feels rushed. The voice is transcribed to word timings, and the captions show your script's exact words on those timings — punctuation and all.
Tuning the AI voiceover generator
Some voices can be made more expressive. With ElevenLabs voices, a more dramatic delivery uses lower stability and higher style settings, so the read has more energy.
AI voiceover generator tip: write for the ear
Short sentences, contractions and one idea per line sound natural. Read your script aloud once — if you stumble, the AI voice will sound off too.
Voiceover in other languages
Translate a project and each language becomes its own project — re-voice it in that language and render. See AI video translation.
Use your own keys
Add your OpenAI or ElevenLabs key in Settings → AI keys and narration runs on your account at the provider's price — useful if you already have a voice plan or want a specific ElevenLabs voice.
Mixing voice with music and effects
- Keep music quieter under narration so the voice stays clear.
- Add sound effects on transitions to punctuate key moments.
- Upload your own recorded audio if you prefer your own voice for some videos.
Voices and consent
Don't use AI voices to imitate a real person without their permission. See our acceptable use policy.
Choosing a voice in the AI voiceover generator
The voice is your channel's personality. Viewers notice when it changes, so it's worth choosing carefully and sticking with it.
Matching the AI voiceover generator voice to your niche
- Education and facts: clear, measured, slightly upbeat.
- Stories and history: warmer, slower, with more expression.
- Motivation: energetic and confident.
- Meditation and wellness: calm and soft.
- Product videos: friendly and conversational, like a creator talking to a friend.
Test before you commit
Narrate the same short script with three voices and listen on your phone, the way viewers will. Pick the one that sounds most natural at normal speed.
AI voiceover generator consistency tip
Save your chosen voice in your campaign settings so every automated video uses it. A consistent voice is part of your brand, just like a font.
Writing scripts for the AI voiceover generator
AI voices read exactly what you give them. A script written for reading on screen often sounds stiff when spoken. A few small changes make a big difference.
Script rules for the AI voiceover generator
- Use short sentences — one breath each.
- Write numbers the way they're said if they're unusual.
- Use punctuation to create pauses: commas for short ones, full stops for longer ones.
- Avoid long lists in one sentence; split them across slides.
- Read it aloud once. If you stumble, rewrite that line.
Separating screen text and narration
On-screen text can be shorter than the narration: a headline on screen, a sentence or two spoken. That way the visuals stay clean while the voice adds detail.
AI voiceover generator pacing
Slides follow the narration's length, so a longer line means a longer slide. If a slide drags, shorten its narration rather than speeding up the voice.