Job Replacement

Source code for the music video for Job Replacement, a "ten little…" countdown in which AI replaces one worker per verse until there are none.

▶ Watch the video on YouTube · ♫ Listen to the song on Suno

Every frame is drawn on an isometric triangle lattice, in the visual language of Simon Strandgaard's TriangleDraw drawings: bold, two-tone, and snapped to the grid. The world is a honeycomb of hexagonal TriangleDraw canvases, one workplace per canvas. Humans are cream and the AI is orange. Each time a worker is replaced, their canvas floods orange and they leave behind a ghost made only of lattice points. The camera rotates the lattice 60° from canvas to canvas, and in the end the lights go out on everything except the AI.

What's here

Path	What it is
src/lattice.js	The engine: shapes are rasterized onto triangle cells (centroid test), camera with rotate/zoom, lattice points, ghost points
src/font.js	A triangle typeface whose verticals lean along the lattice's 60° axis
src/figures.js	The human worker, the orange hex-faced AI, props, hex mandalas
src/world.js	The honeycomb layout (stations rotated by multiples of 60° so they stay on the grid)
src/director.js	Camera path, takeover flood, the AI lighting the canvas borders, countdown numerals, intro and outro
src/st/	The ten stations, one per verse
src/core.js	Easing, hashing, and song timing (130.5 BPM, verse downbeats from the vocal stem)
studio.html	Live preview with audio and a scrubber (open it in a browser from the repo root)
render.mjs	Renders frames in headless Chrome and encodes the MP4 with ffmpeg
STATION_GUIDE.md	The brief the stations were built from
docs/superpowers/specs/	The design spec
prompts/	Every prompt given to Claude while making the video, verbatim

Rendering

You need Node.js, Google Chrome and ffmpeg (brew install ffmpeg).

npm install
node render.mjs --frames=0:169.2 --workers=6            # paint every frame into out/frames (resumable)
node render.mjs --encode --out=out/job_replacement.mp4   # join the frames and the song into an MP4

Quick checks:

node render.mjs --sheet=10,15,20 --out=out/sheet.jpg    # contact sheet
node render.mjs --clip=0:12 --out=out/clip.mp4          # short clip with audio

Outside macOS, add --chrome=<path to chrome>.

How the timing was found

The verse downbeats come from gaps in the isolated vocal stem. whisper.cpp confirmed the lyric order, and the tempo comes from onset autocorrelation of the instrumental stem.