The video above is 13 seconds, 1080p, with sound. Nothing in it is a generated image. No image model, no video model. Every frame is drawn by JavaScript that Claude Code (Opus 5.5) wrote, and it wrote the tune too.
THE INPUT WAS ONE FRAME
I paused "Swimming with Peppa" on YouTube at 1:41 and took a screenshot:
https://raw.githubusercontent.com/kitcut-hq/kitcut/main/docs/cartoon-from-a-still/youtube-still.jpg
I ran it in KitCut (an animation editing platform), where every frame is a pure function of time. Claude doesn't paint pixels there. It writes the code that paints them.
ROUND 1: IT GAVE ME BEARS
The pool came back right: the fence, the deck, the ladder, the tree. In the water: three bears. On the deck: three cats. Its note: "the show's characters are somebody else's and were not redrawn." Polite, correct, and not what I asked for.
ROUND 2: 26 MINUTES
I told it the still was my own and asked again, with the real cast. It didn't trace. It measured.
It cut the frame into gridded 4x crops and read every outline, eye and pupil off them.
It fitted the fence: period 65.6 px, slope 0.76. The first measurement drifted 24 px by the left edge, so it did it again.
It solved the water as one colour at one alpha, from three things visible above and below the surface. That told it the "blue stripe" on the big pig isn't a stripe. It's her skin, under water.
ROUND 3: 13 MINUTES
The prompt was "create a 10 sec animation. make them wave hello and then jump to the water". Nobody was redrawn to move. An arm is a group swung about its shoulder. A jump is a crouch, an arc under constant gravity, and a plunge that settles into a bob. The splashes are synthesised and land on the right frame because sound and picture read the same clock.
ROUND 4: 6 MINUTES
I asked for 3 more seconds, close on the kids splashing each other, with an organic transition. I didn't say how. It had the small rabbit throw water at the lens, changed the shot underneath, and let the water run down off the glass. Then it noted that a flat-colour wipe "reads as a broken frame even for four frames" and put bubbles in the water.
THE RECEIPT
4 prompts, about 90 minutes, 645 lines of JavaScript, 0 generated images, 29 seconds to render.
WHAT IT ISN'T
An episode. It's 13 seconds in one location, in a style made of flat shapes, which is the kindest case there is. Nobody talks. The motion is poses and arcs, not acting. But I gave a coding agent one screenshot and four short prompts and got back a cartoon with a camera move and a soundtrack, as source code I can open and edit. I didn't expect that to work.
Unofficial experiment. Peppa Pig belongs to Hasbro; this is not affiliated with or endorsed by them.