AI Voiceover for YouTube
One narrator across every upload. Paste a script for a single video, or run a whole series through Audiobook Studio with chapters, paragraph re-takes and subtitles — mastered to YouTube's loudness so it never sounds thin.
Previews above are real LeapFun output. Hit Generate to hear your script — 3,000 free credits on sign-up, no card required.
How it works
- Paste the scriptShort videos go straight into Text to Speech. For long scripts, open a Studio project: it splits the script into chapters and paragraphs.
- Choose your channel voicePick a narrator once and reuse it. Carl for explainers, Stella for storytelling, Leo for documentary weight — or clone your own voice.
- Regenerate lines, export with subtitlesFix a mispronounced name with a pronunciation rule, re-take a single paragraph, then export the audio and a subtitle file for the upload.
Built for channels, not one-off clips
- Long scripts without the fight
A 10-minute video is 1,400–1,600 words. Studio keeps it in chapters and paragraphs so a late script change is a one-paragraph re-take, not a full re-render.
- Consistent voice, consistent pronunciation
The same voice and the same pronunciation rules apply to every video in a project — no drift between episodes.
- Subtitles from the narration
Studio exports subtitle files generated from the narration timeline alongside the mastered audio, ready for the YouTube caption upload.
Narration tips for YouTube
- Pace for retention Explainers land around 150 words a minute. Write the intro tighter than the body; the first 30 seconds decide the session.
- Chapters mirror the video Structure the Studio project the way you'll timestamp the video — it makes re-takes and subtitle alignment trivial.
- Fix names once Add a pronunciation rule for people, places and product names; every chapter follows it.
- Vary the voice by segment Use a second voice for quotes or a "narrator vs host" split; Studio assigns voices per paragraph.
- Mind the policy YouTube's monetisation rules reward original, non-repetitive content; AI narration on its own is not disqualifying, but reused or mass-produced content is. Check the current policy.
Narrator voices
What's free, what's paid
| Plan | Price | Credits | What it unlocks |
|---|---|---|---|
| Free | $0 | 3,000 credits on sign-up + 1,000 each active month | Personal & evaluation use |
| Starter | $6 / mo | 40,000 credits / month | Commercial rights · 1 cloned voice |
| Creator | $19 / mo | 200,000 credits / month | 10 cloned voices · unlimited Studio projects · 8-language project translation |
A Creator month (200,000 credits) covers roughly twenty 10-minute videos on standard voices — plus unlimited Studio projects and subtitles. Full tiers, yearly pricing (10× monthly, two months free) and Pro / Team plans on the pricing page. 1,000 credits ≈ 1 minute of standard audio; Ultra voices bill 1.5 credits per UTF-8 byte.
Frequently asked questions
Is an AI voiceover allowed on monetised YouTube channels?
YouTube's policies focus on whether content is original and adds value, not on the narration method. Repetitive or mass-produced content is what gets flagged. Policies change, so check the current YouTube Partner Program rules.
How many credits does a 10-minute video use?
About 1,500 words, roughly 8,500 characters: around 8,500 credits on standard voices. The free tier's 3,000 credits cover a short video; a Creator month covers roughly twenty.
Can I keep the same voice for every video?
Yes. Pick a voice once and reuse it in every generation or Studio project. Pronunciation rules and character assignments persist inside a project.
Do I get subtitles?
Studio exports subtitle files generated from the narration timeline alongside the audio, on Creator and above. Single clips from Text to Speech export audio only.
Can I narrate in more than one language?
Yes. Ultra voices are multilingual, and on Creator and above a Studio project can be translated into eight languages and re-narrated with the same voice setup.
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