How to

How to make explainer videos that go viral

Make short explainer videos people watch to the end and share: a hook that states the answer, one idea, every claim on screen, and captions. With real examples.

Updated October 25, 2026

Examples

A spreadsheet tip cut to two beats: "Select the number." then "One click." Each line of text matches one action on screen.Made with Vidova

Explainer formats in one reel: a subscriber card behind the speaker, a split screen and a boxed headline. Each one gives the eye something new every second or two.By @iamajene

A map explainer: the map carries the idea and two words of text name it.Made with Vidova

A YouTube explainer that opens on a question, answers it with a growing bar chart, and ends on one fact: "Earth has one."Made with Vidova

The short answer

An explainer goes viral when the first two seconds promise a clear payoff and the rest of the video keeps showing it. State the surprising answer as the hook, explain one idea only, put a picture, number or chart on screen for every claim, and add captions word by word. Keep reels under 40 seconds and end on the takeaway, so the video loops back into the hook.

Step by step

Pick one question your audience already asks
Good explainer topics come from comments, sales calls and search suggestions. One video answers one question. If the answer needs two ideas, make two videos.
Write the answer as the hook
Open with the result, not the setup: "Your code is slow for one boring reason" or "Saturn has 274 moons." The viewer stays to see why. Say it and show it as text in the first two seconds.
Show every claim
Each sentence gets its own picture: a screen recording, a chart, a map, a product shot or a number that counts up. Change what is on screen every two to three seconds, so the eye always has something new.
Add captions word by word
Many people watch with the sound off. Put captions in the middle third of a vertical frame, keep them to a few words at a time, and make the key word bigger or a different colour.
End on the takeaway and loop
The last line restates the answer in a few words. Cut the moment it lands. A clean end makes the video loop into the hook, and a replay counts as watch time.
Make the same video in every shape
Export 9:16 for Reels, TikTok and Shorts and 16:9 for YouTube. Post the short one first and use the questions in its comments for the next video.

What makes an explainer spread

People share an explainer when it makes them look smart in one sentence. That means the takeaway must be short enough to repeat. Test it: if you cannot say the point in under ten words, the video is not ready.

A specific number or result in the hook beats a general promise.
One idea per video. A list of five tips is five videos.
Motion on every claim: charts that grow, maps that fill, numbers that count.
A voice that talks to one person: "you", not "people".
No intro, no logo sting at the start. The brand goes at the end, or nowhere.

Explainer formats that work

Talking head with graphics: you speak, and a card, chart or screenshot pops in on each claim.
Screen recording: the steps on screen, cut to the clicks that matter, with a zoom on each one.
Data story: a chart or a counter carries the point, with a voiceover.
Map story: a place, a route or a spread over time, drawn on a map.
Myth and fact: the wrong belief first, then the fix, in two halves.

How Vidova makes one

Tell your AI video team the question and who it is for. It writes the hook and the script, plans each shot, and builds the video on a real timeline. It can use your recordings and clips, or make the visuals: charts, counters, maps, titles, device mockups, generated pictures and a voiceover. It adds captions word by word and checks the cut before it hands it to you.

You can change any part by asking: a shorter hook, a different chart, a new voice. Then make the 16:9 version for YouTube from the same project.

Vidova AI video editor

Want the whole video edited?

Describe it and Vidova does it. It opens in a new project in the editor, where you add your video.

Frequently asked questions

How long should an explainer video be to go viral?

For Reels, TikTok and Shorts, 20 to 40 seconds is enough for one idea. A YouTube explainer can run 5 to 10 minutes if each minute adds a new reason to stay. Cut anything that does not move the answer forward.

Do I need to show my face?

No. Screen recordings, charts, maps and stock footage with a voiceover work well. A face helps trust, so creators who sell a service often open with themselves and cut to the visuals.

What should the first two seconds say?

The result or the surprising part of the answer, as both speech and on-screen text. Do not greet the viewer or say what the video is about. Say the thing.

Can I make explainer videos without editing skills?

Yes. In Vidova you describe the video and your AI video team writes, builds and checks it. You review the result and ask for changes in plain words.

How often should I post explainers?

Accounts that grow tend to post short videos several times a week. Keep a list of questions from comments and turn each one into a video.