How to Write a Voice Over Script: A Simple Step-by-Step Guide

I need a script for a 45 second animated film about our new expense app. My name is Jordan, and I want it to sound clear, friendly, and easy to record.

That is a normal brief. The trap is simple too, people write for the page, then wonder why the words sound stiff in the speaker's mouth. Write for the voice first, then match the picture.

Motion says a good script is like a good sandwich, fewer layers, less mess, better bite.

Before you write: pick one job for the script

Start with one job. Explain, invite, calm, teach, or sell. Not all five. If the script tries to do everything, the viewer holds onto nothing.

Then pick one listener. A new customer needs a different script than a teammate, a parent, or a client. Write to one person in one moment. That makes the words faster and sharper.

Now choose the length. The film length decides the word count, not the other way around. For a 30 second film, aim for about 60 to 75 words. For 60 seconds, aim for about 120 to 150 words. Those are useful targets, not rules carved in stone. Read the draft aloud and adjust to the real speaking pace.

If the film is animated, leave space for pictures. A voice over script does not need to describe every frame. If the screen can show it, the voice can stay out of the way.

If you already have a document, a script, or rough notes, you can turn that into a film from a script or a document.

Step 1: Write the plain version first

1. Step 1

   Say the idea in one sentence. Write it the way you would say it to a coworker at lunch. Keep it blunt and plain.

2. Step 2

   Split it into 3 to 5 beats. A simple shape works well: problem, change, proof, next step. For a documentary voice over script, that might become setup, detail, turn, takeaway.

3. Step 3

   Write ugly on purpose. Get the facts and order down first. Clean comes later.

4. Step 4

   Keep each beat small. One thought per line is easier to read, easier to hear, and easier to cut later.

5. Step 5

   Do not worry about performance yet. You are writing the message first. The voice comes alive after the words are stable.

Here is the quick contrast. “Our platform simplifies financial admin through intuitive workflows” is written. “Stop hunting for receipts at tax time” is spoken.

Step 2: Cut the script into short spoken lines

Short lines are your friend. Long sentences can work on paper, but the voice has to carry them in real time. If a line needs a deep breath, split it.

Use everyday words. Pick the word people actually use, not the one that sounds fancy in a meeting. “Show” is better than “demonstrate.” “Fix” is often better than “optimize.”

Put the strongest words near the front. People pay attention early in a sentence. If the point matters, do not hide it at the end.

Read the line out loud once. If you stumble, rewrite it. If you need to read it twice to understand it, the viewer will need the same extra pass.

For a voice over demo script, this matters even more. A demo should show range, but it should still sound natural. Use short scenes and different moods, not long blocks of text.

A good rule is simple: one sentence, one job. If a sentence tries to teach, sell, and joke all at once, cut it in half.

Step 3: Match the words to what the animation will show

Do not narrate every image. That is the fastest way to make a film tiring. If the screen already shows a hand tapping a button, the voice does not need to say it.

Use the voice to explain what the viewer cannot see. That might be a change, a reason, a result, or a point. The picture does the showing. The voice does the meaning.

This is where many scripts get crowded. They copy the visuals line for line. That wastes time and makes the film sound like a school report. Give each scene a reason to exist, new information, new feeling, or the next step.

If your film explains a service change or a process, keep the path clean. Start at the problem. Move through the change. End at the action. The viewer should never wonder what happens next.

A spec film like Ruter: T-Bane, People Who Walk Like People shows how a clear idea can lead the visuals.

Step 4: Read it aloud and cut again

Read the full script at normal speed. Mark the spots where you pause, rush, or trip. Those spots tell you what the eye missed. The sentence may look fine and still be awkward in the mouth.

Cut filler words that do no work. Words like really, very, just, actually, and basically often sound harmless. They also eat time.

If the timing is tight, cut the least important line first. Do not chop the opening just because it is the easiest place to cut. The opening has to do the heavy lifting.

Check how the script sits with music and sound. A line that seems short on the page can still crowd the beat. Leave a little air around the big points.

If you are using Nine, the film can start from a sentence, a script, a document, a template, a voice recording, or a website address. That makes rough drafts easy to test before you lock them in.

Step 5: Shape the ending so people know what to do next

Do not stuff three endings into one paragraph. Pick one finish: a next step, a final thought, or a simple feeling you want to leave behind.

For an explainer, say what happens next. For a documentary voice over script, land on the point, not the pile of details. For a demo script, end with quiet confidence and a simple line.

Short endings usually win. If the last line can be shorter, make it shorter. A clean ending gives the picture room to breathe.

If you need a film built around a clear message and simple pacing, How to Write a Script for a 30 Second Animation is a good next stop.

What goes wrong most often

• The script tries to say everything. That usually means nothing lands clearly.
• The words sound written, not spoken. Fancy sentences can look smart and still sound stiff.
• The script repeats the pictures. If the screen already shows it, the voice should move on.
• The opening is too slow. A long lead-in can lose the viewer before the point arrives.

If the length keeps missing, check the purpose again. A 45 second film does not need the same script as a 2 minute one. A small mismatch there can throw off the whole piece.

If you are turning a document or rough notes into a finished film, A Film From a Script or a Document can help you pick the cleanest starting point.

How long it takes, and what to do with the draft

For a short film, a first draft can take about 15 to 30 minutes. That is a rough personal estimate, not a rule. A good rewrite usually takes longer. The first draft finds the shape. The rewrite makes it speak.

Plan for at least one read aloud, one trim, and one timing check. If you can, take a break between drafts. Fresh ears catch clunky lines faster than tired ones.

If the script will be reused in several languages, write a clean source version first. A film is made in the language of the words you give it, so each language needs its own translated script.

If you want to see how a script becomes a finished film, Turn a Script Into an Animated Video walks through that next step.

And if you are still not sure what kind of short film you need, Explainer Video Without an Agency is a useful reality check for the whole job.

Quick self-check before you send it off

• Can you say the main point in one sentence?
• Can a real person read it without stumbling?
• Does the script leave room for the pictures?
• Is the ending clear and short?

If the answer is yes, you are close. If not, cut again. That is usually the move.

If you want to try a film directly from your own words, Nine lets you start from a sentence, a script, a document, a template, a voice recording, or a website address. A film of your own comes with a plan, and plans are on the prices page at /pricing.

And if you want a place to start from scratch, the front page lets you try the films in your own colours at /.