Sketched trebuchet becomes a 3D catapult that topples a tower
35 views · 0 likes · 0 saves · 0 reposts · Posted Sep 27, 2026 · 0:53 · Production
OUR NOTEA demo video edited by Opus 5.5 from raw footage: a paper trebuchet design sketch turns into Catapult Lab, a browser physics simulator where tuned shots score a direct hit and collapse a stone tower, with bold caption cards.
Opus 5.5 editing my demo video 👀
Built a hand-drawn catapult sketch that turns into a real 3D physics simulator.
Recorded it, gave Opus 5.5 one prompt to edit the raw footage.
No editing app. It made its own.
Video below 👇THE PROMPT
Partial prompt — the creator shared only part of it.
Opus 5.5 editing my demo video 👀
Built a hand-drawn catapult sketch that turns into a real 3D physics simulator.
Recorded it, gave Opus 5.5 one prompt to edit the raw footage.
No editing app. It made its own.
Video below 👇MAKE ONE LIKE THIS
Three steps, using what the creators in this index used.- 1 · Copy the prompt
Use the prompt above as your starting point, then change the subject and the style.
HOW OTHERS WROTE THEIRS → - 2 · Direct it like an editor
- Ask for one self-contained HTML file on a fixed 1920×1080 stage.
- Link this video as the reference for pacing and style.
- Send two or three rounds of specific notes.
- 3 · Render it to MP4
A short piece like this can be screen-recorded, or captured frame by frame for exact timing.
TURN AN HTML ANIMATION INTO AN MP4 →
The creator didn't name their tools. Most videos like this are HTML, canvas or SVG animation written by Claude and screen-recorded or rendered to MP4 — how that works.
Indexed Sep 30, 2026, 2:01 PM · Views as of indexing. Video and post © their creator.