Guides

How to Write an Explainer Video Script

A useful explainer gives one important question a clear answer. The script controls the logic; the visuals make that logic easier to follow.

This guide uses the Taipei 101 explainer as a worked example, without turning the building into the subject of every section.

3 min readUpdated August 30, 2026

Begin with one question.

Start with what the viewer should be able to answer after one watch. A topic such as “skyscrapers” is too broad. A question such as “Why are skyscrapers designed to move?” defines the problem and makes it easier to decide which facts belong.

If the script must explain what something is, how it works, why it matters, and its complete history, split the subject into separate videos.

Too broadSkyscrapers

A subject area, not a question the video can resolve.

FocusedWhy are skyscrapers designed to move?

A specific question with a visible cause, mechanism, and result.

Write the answer before the hook.

Write the central answer in one plain sentence before drafting the introduction. It does not have to become the opening line. It acts as the standard for the rest of the script.

Every fact should help the viewer understand that sentence. Useful detail stays; unrelated detail moves to another video.

Tall buildings flex, while a tuned mass damper counters part of the motion people feel.

  • KeepDetails that help the viewer reach this answer.
  • CutHistory, trivia, and context that do not explain the mechanism.

Move from the problem to the result.

A reliable explainer follows a visible chain: establish the problem, introduce the constraint, explain the mechanism, and end with the result. This order gives technical information a reason to appear.

The pattern works for software, finance, science, products, and current events. The subject changes; the logic stays clear.

  1. ProblemWhat is happening?

    Changing wind pressure makes the tower sway.

  2. ConstraintWhy not use the obvious solution?

    Complete rigidity would add weight and cost.

  3. MechanismWhat solves the problem?

    A tuned mass damper moves against part of the tower’s motion.

  4. ResultWhat changes?

    The tower still flexes, but occupants feel less movement.

Turn each beat into one spoken thought.

Write one complete thought at a time. Prefer concrete verbs and familiar words. Introduce a technical term only after the viewer understands the problem it solves.

  • Open with a concrete statement, not a greeting.
  • Define specialist terms through what they do.
  • Keep related clauses in the same spoken line.
  • Read every sentence aloud at the intended pace.
  1. Skyscrapers are designed to move.
  2. Making them completely rigid would add enormous weight and cost.
  3. A tuned mass damper moves against part of the tower’s sway.
  4. The building still flexes, but people inside feel less motion.

Assign a visual job to every beat.

The visual should clarify the spoken claim, not merely occupy the screen. Use an exterior for scale, a diagram for structure, and a close view for the mechanism.

If a line is difficult to show accurately, simplify the line before reaching for generic footage.

  • Taipei 101 rising above the city skyline

    Scale
    Establish the tower and its surroundings.

  • Height diagram of Taipei 101

    Structure
    Make height and proportions easier to read.

  • Tuned mass damper suspended inside Taipei 101

    Mechanism
    Show the device that counters the motion.

  • Tuned mass damper exhibit inside Taipei 101

    Context
    Connect the mechanism to a real place.

Edit for comprehension, then verify the facts.

Concision matters, but compression is not the goal by itself. Remove words only when the explanation remains complete and accurate.

Once the script passes these checks, follow the complete script-to-video workflow to turn it into an editable video.

  • AnswerCan someone state the central answer after one listen?
  • LanguageIs every technical term explained in plain language?
  • LogicDoes each sentence lead naturally to the next?
  • EvidenceIs every factual claim supported by a reliable source?
  • EndingDoes the final line resolve the opening question?

Give one complex idea a clear visual sequence.

Start with a focused script and the references that support it. Shortsly turns them into an editable explainer video.

For editor controls, export requirements, credits, and limits, see Shortsly Help.

Create an explainer video