Why creators use an AI voice
Recording your own voiceover means a quiet room, a decent microphone, and a dozen takes to get one clean read. An AI voice gives you the clean read first time, and the same voice on every video, which is what makes a faceless account recognisable. It also lets you publish in a language or accent you do not speak comfortably.
The trade-off is that the voice only knows what is on the page. A human reader adds pauses and emphasis by instinct. With an AI voice, you add them with punctuation and word choice.
Write for the first two seconds
Viewers decide almost immediately whether to keep watching, so the voiceover has to start with the point.
- Open with the payoff or the tension. “I tested five budget blenders so you do not have to” beats “Hi guys, so today I wanted to talk about blenders”.
- One idea per sentence. Short sentences sound confident and are easier to cut video to.
- Use full stops as your edit points. Every full stop is a natural place to change the shot.
- Write numbers as words when the pronunciation matters: “twenty twenty-six”, not “2026”.
- End on an action: follow for part two, link in bio, try it tonight.
How many words fit
| Video length | Words | Characters (approx.) |
|---|---|---|
| 7 seconds | 15 to 18 | 100 |
| 15 seconds | 35 to 40 | 230 |
| 30 seconds | 70 to 80 | 450 |
| 60 seconds | 140 to 160 | 900 |
These assume a natural pace. If you raise Speed in Voice Settings you can fit a little more, but past a certain point the voiceover stops being easy to follow, and captions cannot rescue it.
Voices and settings that work
Start with the Natural preset. If the read feels flat for a high-energy video, switch to Expressive or lower Stability a little so the delivery varies more from line to line. For calm formats such as recipes, study tips or day-in-the-life videos, Narration keeps the voice even.
Pick one voice per series and keep it. People recognise an account by its sound before they read its name.
Adding the voiceover to your video
Voice Labs makes the audio. You combine it with your footage in a video editor:
- Save the audio from Voice Labs, or share it directly to your editor.
- In the editor, import the audio as an audio track.
- Trim your clips so each shot changes on a sentence break.
- Add captions. Many people watch with the sound off.
- Export and upload to TikTok as normal.
Cut the picture to the voice rather than the other way round. It is far easier to trim a clip by half a second than to make a sentence half a second shorter.
