Motion Design · Oct 26, 2026
THIS VIDEO HAS NO EDITOR, NO FOOTAGE AND NO STOCK MUSIC. EVERY FRAME AND EVERY NOTE IS CODE OPUS 5.5…
THIS VIDEO HAS NO EDITOR, NO FOOTAGE AND NO STOCK… by Velumarc, credited to Claude Opus 5.5. Watch the Motion Design video and visit the original X post.
Velumarc@Velum_arc
View on XTHIS VIDEO HAS NO EDITOR, NO FOOTAGE AND NO STOCK MUSIC. EVERY FRAME AND EVERY NOTE IS CODE OPUS 5.5 WROTE. it's one HTML file. I open it in Chrome, press save, and about two minutes later there's a 20-second MP4 ready for X. how it works, in plain words: -> every frame is a function of time. draw(t) always returns the same picture for the same t, so the whole video is 600 calls of one function -> three.js draws the scene: real 3D, metal, light, bloom -> the browser encodes it. WebCodecs turns each frame into H.264, no ffmpeg, no upload -> the music is code too. an 808 track built note by note with the Web Audio API, with the break and the drop placed on the exact frames where the cuts happen I never touched a timeline. I described what I wanted, watched the result, said what was wrong, and Claude changed the code. the part that took the most rounds wasn't the 3D. it was the music. "make it hit harder" is easy to say and hard to turn into numbers, so now it measures the loudness…
The prompt behind it.
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Video and prompt by Velumarc. Original post ↗



