How to Make an Explainer Video: A Step-by-Step Guide

An explainer video only works if it does one job well: make a stranger understand your product fast enough to take the next step. Learn how to make an explainer video the right way, and it becomes one of the highest-leverage assets on your landing page, in your onboarding flow, or in a paid ad, because it does in 60 seconds what a page of text asks visitors to read and rarely gets done.

This guide walks through the whole process in order: defining the goal and audience, writing a script that actually explains something, choosing the right length and format, producing the video (with AI or otherwise), refining the cut, and publishing it where it will get watched.

Where relevant, we'll point out where a script-to-video AI tool like VideoAI Studio can shortcut the production step once your script is solid, but the guide works whether you end up hiring an animator, building it yourself, or generating it from text.

Start With the Goal, the Audience, and One Core Message

Before opening any tool, get clear on what the video needs to do and for whom. An explainer video for a landing page has a different job than one for a product onboarding flow or a paid ad, and the goal changes the script, the length, and even the visuals.

Write down the single message you want a viewer to remember after watching, in one sentence. If you can't do that yet, the fastest path to a better video isn't a better tool, it's clearer thinking about what the video is actually explaining.

Name the primary goal: sign-ups, trial starts, feature adoption, or investor understanding
Describe the viewer in one sentence: their job, their problem, what they already know
Write the one sentence you want them to remember afterward
Note where it will live first (homepage, email, ad, app), since that drives length and tone

Write a Tight Script Before You Touch a Video Tool

The script is the video. A good script with mediocre visuals still explains the product; great visuals over a confused script just look expensive and say nothing. Use a simple four-part structure that works for almost any product: problem, solution, how it works, call to action.

Write it as spoken language, read it out loud, and time it. Most explainer narration runs about 120-150 words per minute. Cut anything that doesn't move the viewer toward the CTA.

Problem (10-15 seconds): name the pain in words the viewer already uses, not your internal jargon
Solution (10-15 seconds): introduce the product as the fix, in one sentence
How it works (30-45 seconds): 3-4 concrete steps or features, shown rather than just told
Call to action (5-10 seconds): one specific next step, such as "start free" or "book a demo," not "learn more"

Choose the Length and Format That Match Where It Will Run

Length is a distribution decision, not a creative one. A 60-90 second video works for a landing page hero or a top-of-funnel ad because it has to earn attention fast. A 2-3 minute video is fine for onboarding or a sales deck, where the viewer already opted in and wants more detail.

Format matters too: square or vertical for social and mobile ads, widescreen for a website or a sales call. Decide the format before you script, since footage written for widescreen doesn't always cut down cleanly into a vertical feed video.

Produce the Video: AI Generation vs. Traditional Methods

Once the script is locked, you have three realistic paths: hire an animation studio or freelance motion designer, build it yourself in a DIY animation tool with stock characters and templates, or generate it directly from your script with an AI video tool. Each trades off cost, speed, and control differently.

VideoAI Studio (videoaistudio.ai) is built for the last option: paste in your script or a short prompt and it generates a finished, narrated video, multiple scenes assembled with AI voiceover, using Google's Veo 3.1 or Veo 3.1 Fast models (Luma and Runway are also available). It's free to start with 2 videos a month at 720p with a small watermark, and paid plans start at $29/month with resolution up to 4K, so you can test the script-to-video path on a real script before committing a bigger budget.

Agency or freelancer: highest polish and control, typically the slowest turnaround and highest cost, best for a flagship homepage video
DIY animation tools: moderate cost and control, though templated visuals can look generic without heavy customization
AI script-to-video (e.g., VideoAI Studio): fastest turnaround since scenes and voiceover generate together from your script, useful for testing messaging or producing ad variants before investing in a custom production
Whichever path you choose, test more than one cut of the opening 5 seconds, since that's what decides whether anyone keeps watching

Refine the Cut and Add Captions

The first generated or edited draft is rarely the final one. Watch it with the sound off first. If you can't follow the story from visuals and captions alone, the pacing or the visuals need work before the voiceover gets a final pass.

Captions aren't optional. Most social and in-app video is watched muted by default, so burned-in captions protect the message when there's no sound. Check the pacing against your script timing, tighten any scene that runs long, and confirm the CTA is legible on screen for at least 3 seconds, not just spoken.

Publish It Where It Will Actually Get Watched, and Avoid These Mistakes

The same video rarely performs equally well everywhere. Put the primary cut on the landing page or in onboarding where it was scripted for, then create shorter or reframed versions for ads and social instead of dropping the same file into every channel.

Most explainer videos underperform for a handful of repeatable reasons, not because of production value. Fixing the script and the plan above will get you further than a bigger budget will.

Publish placements: landing page hero, onboarding flow, app empty states, paid social ads, sales decks, and a pinned social post
Mistake: burying the value proposition after 20 seconds of scene-setting
Mistake: skipping captions, so the message is lost on mute-first platforms
Mistake: forcing one video length into every channel instead of cutting variants
Mistake: a vague CTA like "learn more" instead of a specific next step

Frequently asked questions

How long should an explainer video be?

Most run 60-90 seconds for a landing page or ad, and up to 2-3 minutes for onboarding or sales use where the viewer already opted in. If your script needs more than 3 minutes to explain the product, that's usually a sign it needs to be split or tightened, not that the video should run longer.

Do I need to hire a video producer, or can I make one myself?

You can produce a solid explainer yourself, especially for a first version or to test a script. AI script-to-video tools like VideoAI Studio can generate a narrated, multi-scene video directly from your script, which is a fast way to validate the messaging before deciding whether a custom production is worth the investment.

What makes an explainer script good?

A good script names the viewer's problem in their own language, introduces the product as the fix in one sentence, shows 3-4 concrete steps of how it works, and closes with one specific call to action. Cut anything, jargon, extra features, backstory, that doesn't serve that structure.

Do explainer videos need captions?

Yes. Most viewers watch social and in-app video muted by default, so burned-in captions make sure the message lands even without sound. Treat captions as part of the script, not an afterthought added after editing.

Ready to Turn Your Script Into a Video?

Paste your explainer script into VideoAI Studio and get a finished, narrated video with AI voiceover in minutes. Start free with 2 videos a month, no credit card required, and upgrade to a paid plan from $29/month when you need higher resolution up to 4K.

Start creating free