AI voices are now good enough that the script is usually the weak part. How to write for the ear, punctuate for pacing, handle Hindi and Hinglish, and mix a voiceover into your video.
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Two years ago you could spot an AI voice in a second. Today the better speech models breathe, hesitate and change tone well enough that a viewer often won't notice — until the script gives it away.
The pattern is easy to reproduce. Paste a paragraph from a brochure into any speech tool, pick a voice, and the result sounds like a railway announcement. It's tempting to blame the voice. Rewrite the same content as spoken sentences, change nothing else, and it sounds like a person.
So this guide is mostly about writing. The settings matter, but the script matters more.
Text meant for reading and text meant for hearing are different things. A reader can slow down or look back. A listener gets one pass.
Written for the eye:
"Our premium, handcrafted candles, which are manufactured using 100% natural soy wax and are available in twelve distinctive fragrances, provide up to forty hours of burn time."
Written for the ear:
"These candles are poured by hand. They're soy wax — nothing else. Twelve fragrances. And each one burns for about forty hours."
Same facts. The second version is what you'd actually say to a customer across a counter. The rules behind it:
This is the single most useful step, and it's free. Read the script out loud at speaking pace with a timer running.
Timing guide:
| Length | Words (calm pace) |
|---|---|
| 15 seconds | 35–40 |
| 30 seconds | 70–80 |
| 60 seconds | 140–160 |
| 90 seconds | 210–240 |
If your script is 220 words and your Reel is 60 seconds, the fix is cutting words, not speeding up the voice.
A speech model reads punctuation as performance notes. You can steer pacing without touching a setting.
Compare:
"Three sizes two colours one price"
"Three sizes. Two colours. One price."
Models guess at anything ambiguous. Remove the guesswork.
Generate just the tricky line first. It costs almost nothing and saves redoing a full narration.
A lot of Indian creators work in Hindi, or in the mix most of us actually speak. Some practical notes:
The impressive movie-trailer voice is rarely the right one.
On the Audio desk in Vision Studio you can filter voices by language, gender and age, then try a line before committing to the full script.
Don't paste 300 words and hope. Split the script into natural blocks — hook, each point, closing line — and generate them separately.
Keep the same voice and settings for every block so they match.
In Motion Studio, drop the audio onto its own track under your clips, trim the gaps between sections, and add read-along captions so the words light up as they're spoken. If your visuals are AI clips, our image-to-video guide covers making those.
Before (one long sentence):
"Welcome to Sharma Sweets, where we have been serving the finest quality traditional Indian sweets made with pure desi ghee since 1987, and this Diwali we are offering a special 15% discount on all gift boxes."
After:
"Diwali without mithai? Not happening.
At Sharma Sweets, we've used pure desi ghee since nineteen eighty-seven. Same recipe. Same family.
This Diwali, every gift box is fifteen percent off.
Sharma Sweets. Order today."
It's shorter, it has a hook, it pauses in the right places, and the offer sits on its own line.
Usually because the script was written to be read, not heard: long sentences, formal words, no pauses. Shorter sentences, contractions and deliberate punctuation make the same voice sound far more natural.
About 140 to 160 words at a relaxed pace, or up to around 180 for an energetic ad. Hindi scripts often run slightly longer for the same meaning, so time them by reading aloud.
Yes. Many current speech models handle Hindi well, and several manage mixed Hindi-English. Write Hindi words in Devanagari where possible, choose a voice native to the language, and test a line before generating the whole script.
A generic AI narrator generally doesn't need a label. A voice that imitates a real person does, and needs that person's permission. Check each platform's current disclosure rules.
No. Using someone's voice without consent can break platform rules and personality-rights law, and courts in India have protected well-known voices. Use stock AI voices or your own.
