Table of contents
Explainer content carries a contradiction: explain precisely and viewers lose the thread; simplify and it feels hollow. The resolution is structure. The same fact, told in four parts, leaves one idea behind. Told flatly, it leaves nothing.
1. Four Parts
| Part | Function | Share of runtime | Typical method |
|---|---|---|---|
| Hook | Create one concrete question | First 5 seconds | Counter-intuitive claim or scene |
| Analogy | Explain the unknown with the known | 20% | Everyday comparison |
| Visualisation | Make the abstract visible | 50% | Diagram, demo, animation |
| Conclusion | Give one usable judgement | 20% | One repeatable sentence |
Most of the effort belongs in part three. Viewers remember images more than narration. Anything drawable should not be spoken only.
2. Writing the Hook
Effective hooks are specific observations that contradict expectation. On sun protection, do not open with "today we will talk about sunscreen." Open with "why do you still tan when you wear sunscreen."
Three ineffective openings: introducing yourself, asking "did you know," and grand context-setting. Viewers have learned to scroll past all three.
For talking-head formats, the hook must also work visually. If the opening is one person facing camera, the first three seconds need high information density.
3. Finding an Analogy
Draw analogies from things people use daily: switches, pipes, queues, savings.
Two tests: does it explain mechanism rather than describe appearance, and does it still hold when extended to detail? "It is like a pipe" is insufficient; you need to say which part is the pipe, which is the valve, and what happens when it clogs.
Do not stack analogies. One carried through beats three mentioned briefly.
4. Visualisation
Three approaches, in ascending cost.
Diagrams, hand-drawn or simple overlays — cheap, suited to concepts.
Physical demonstration with household objects — high credibility, suited to physics and chemistry.
Animation — for what cannot be filmed: microscopic, astronomical, internal structures. Reusable across a series, so marginal cost falls.
5. Three Failure Modes
Term stacking. Eight technical terms in ninety seconds makes viewers quit. Keep the terms; explain each on first appearance.
Over-generalising conclusions. Claims must stay within the evidence. "Research suggests" becoming "proven" is a common distortion.
Flat pacing. Same speed and same visual for ninety seconds causes fatigue. Change the visual mode roughly every twenty seconds.
A simple check: can a viewer restate the content in one sentence? If yes, the structure holds.
How long should one video be?
Sixty to ninety seconds is safe. Larger topics should become a series, not one long episode.
Does it need a subject expert?
Someone must check facts, not necessarily the presenter. The split can be expert review plus producer structuring.
How do we avoid getting things wrong?
Two independent sources for key facts, cite data with year and origin, and omit what cannot be confirmed.
See also
- Video services: delivery standards for explainer content
- Short video strategy: choosing formats by audience intent
- Content operations: turning one topic into a series
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