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Stacked Words Then Summary Motion Clip

A minimalist editorial b-roll clip that stacks a few short words, then lands them on one summary card. Built as editable HTML/CSS and rendered locally to MP4 for repeatable social publishing.

What you get

  • A 6-12 second wide MP4 clip
  • Editable HTML/CSS source for copy and color changes
  • A consistent word-stack motion system for a series
  • A timed final hold suitable for a voiceover transition

Good fit

  • Educational posts that turn several points into one insight
  • Editorial series needing repeatable visual transitions
  • Voiceover clips that need quiet, legible b-roll

Not for

  • Product demonstrations that need real screen footage
  • Complex statistical charts or long-form explainers

What you provide

  • The main takeaway
  • Three to five short supporting terms
  • A closing line
  • Optional series label or episode number

Requirements

  • Node.js 20+
  • FFmpeg
  • Chromium (npx playwright install chromium)

Running cost

No external services or generation models. Renders locally.

Try this prompt

/sl-stacked-words-then-summary-motion-clip Create a 9-second 16:9 educational clip for LESSON 04. Open with “A clearer lesson” and “Start with the pieces.”, stack the words Question, Evidence, Pattern, and Insight, then show “Connect the pieces” with “A pattern is easier to remember.” Close with “From parts to understanding.” Use a quiet editorial look.

Follow-up prompts

  • Keep the same motion and palette, but make the terms shorter for a faster voiceover.
  • Create the next clip in this series with a new takeaway and the same timing.

Verification

Verified

render-checkpass4.0 / 512s

FAQ

Can I revise the wording later?

Yes. The visible copy remains text in the HTML/CSS source, so you can edit it and render the MP4 again.

Does this require generated images or video?

No. The type, surfaces, and motion are composed in HTML/CSS and rendered locally.

Can several clips share the same look?

Yes. Keep the palette, type scale, word order, and scene timing fixed while changing the terms and takeaway.

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