What Is an Explainer Video? Types, Lengths, and Uses

An explainer video is a short, focused video that explains what something is, how it works, or why it matters, usually in 60 to 120 seconds. It pairs a clear spoken script with simple visuals so a viewer understands an idea faster than they would by reading about it. Marketing teams use explainer videos to introduce a product, educators use them to teach a single concept, and training teams use them to onboard new staff. The format has one job: take something abstract and make it obvious.

Producing one used to mean a script, a voice actor, and a motion designer working for a week or more. Today an AI tool like Jellypod can render an explainer-style video from a script or a document in minutes, in its Whiteboard Explainer style, with word-synced captions and no watermark. This guide covers what an explainer video actually is, the main types, how long each one should run, and how AI changed the way they get made.

What is an explainer video?

An explainer video communicates one idea clearly and quickly. Unlike a demo that walks through every feature or a documentary that explores a subject in depth, an explainer strips a topic down to its essentials: the problem, the idea that solves it, and the reason it matters to the person watching. Most explainers follow a simple arc. They open with a relatable problem, introduce the concept or product as the answer, show how it works in a few plain steps, and close with a single next action.

The reason the format works is attention. People will watch a 90-second video that promises to clear something up long before they will read a 10-page document about the same thing. That is why the explainer has become the default first touch for software companies, the standard way instructors introduce a new unit, and a reliable tool for any team that needs a lot of people to understand the same thing at once. A good explainer respects the viewer's time and leaves them able to describe the idea to someone else.

What are the main types of explainer videos?

There are four common styles of explainer video, and each one signals something different to the viewer.

The whiteboard and animated styles are the two most requested because neither requires a camera, a set, or a reshoot when the message changes. That flexibility is exactly why they translate so well to AI generation, where the visuals are rendered from a script rather than filmed.

How long should an explainer video be?

Length depends on the job the video is doing. For a marketing or product explainer, aim for 60 to 120 seconds. That window is long enough to set up a problem and land a solution, but short enough that a first-time visitor will actually finish it before deciding whether to keep reading or sign up. Anything past two minutes on a landing page tends to lose people before the call to action.

Training and educational explainers can and often should run longer. When the goal is comprehension rather than a quick pitch, a 5 to 15 minute video that teaches a full concept, or a longer piece that covers an entire module, holds up fine because the viewer arrived expecting to learn. The rule is to match the length to intent: short when you are trying to earn attention, longer when you already have it and need to transfer real understanding. If you want a version short enough to post on social as well, a vertical Short can carry the same core idea in under a minute for feeds where nobody watches for two.

When should you use each type of explainer video?

Match the style to the audience and the message, not to whatever looks most impressive.

1. Introducing a product or feature

   Use an animated or screencast explainer. Animation sells the concept on a landing page; a screencast proves the software is real once someone is interested.
2. Teaching a concept or process

   Use a whiteboard explainer. The drawn-as-you-watch style signals learning and keeps a viewer with you through each step of an idea.
3. Onboarding staff or customers

   Use a screencast or whiteboard explainer. Both are cheap to update when the process changes, which matters when the content has to stay accurate.
4. Building trust or telling a story

   Use live action. A real person on camera carries credibility that animation cannot, which is why founder intros and testimonials stay live action.

For teams that produce a lot of internal or educational content, the whiteboard and screencast styles win on economics. They are the two you can regenerate the moment a fact changes, which is what keeps learning and development libraries current instead of quietly going stale.

How has AI changed explainer video production?

For most of the format's history, an explainer video was a project. You wrote a script, hired or recorded a voice, and paid a motion designer to animate every scene, and any change meant going back to the designer. That workflow put explainers out of reach for anyone without a budget or a lead time, which is why so many educators and internal teams stuck with slides and PDFs instead.

AI generation collapsed that pipeline. Instead of storyboarding and animating by hand, you provide a script or a source document, and the tool writes the narration, generates the visuals to match, and syncs captions to the words automatically. The cost of a single video drops toward the cost of the subscription, and, just as importantly, the cost of changing a video drops to almost nothing. That shift is what turned the explainer from an occasional marketing asset into something a team can produce weekly. For a closer look at the economics, see our breakdown of what an explainer video costs, and for a tour of what strong results look like across use cases, see our explainer video examples.

How do you make an explainer video with AI?

Jellypod produces explainer-style video through Magic Video, the feature that turns a script or an uploaded document into a rendered video with synchronized visuals. You choose the Whiteboard Explainer style, and Jellypod illustrates the narration scene by scene as the voice speaks, the same drawn-as-you-watch look a hand-animated whiteboard video uses, without the animator or the reshoot.

1. Start from a script or a document

   Paste a script, or upload a PDF, slide deck, or notes. Jellypod grounds the narration in your source so the video stays accurate.
2. Choose the Whiteboard Explainer style

   Pick the style that reads as teaching. Jellypod generates illustrated scenes timed to the narration automatically.
3. Edit before you render

   Rewrite any line and adjust pacing in the editor. Drafting and editing are free, so you can iterate until it is right.
4. Render and download the MP4

   Every video renders with word-synced captions and no watermark, and downloads as an MP4 you own outright.

Magic Video runs inside the episode flow, so a single explainer can be as long as a full 75-minute training piece or as short as a one-minute teaser, all from the same source. You can preview the underlying generation for free with the AI Podcast Generator before committing to a full render, or open Magic Video to see every visual style available. The point is not that AI makes a fancier explainer. It is that the explainer finally becomes cheap enough, and fast enough to update, that the format fits the way real teams actually work.