oil-motion

Oil-motion is an agent skill that manufactures scroll-driven web animations using AI video generation. The agent locks keyframes, has a video model fill the motion between them, reviews the frames, and ships a sprite sheet or chroma-keyed MP4 wired to scroll position. At 30% scroll you see frame 30. MIT licensed, but the workflow requires a paid ZenMux API key, so every animation costs real money per generation.

Setup is Python, Pillow, and ffmpeg plus the key, and the pipeline expects a human to approve keyframes and review output. The skill's docs are in Chinese, which matters since the agent reads them to do the work.

Its own docs draw the right line: for ordinary translation, scale, and rotation, write code; GSAP and Motion do that deterministically and free. The paid generation only earns its cost for what it calls semantic motion, product teardowns and material changes that CSS transforms can't fake.

The catch: output is baked at build time, regeneration can drift your product's proportions, and days-old viral projects have no track record. A hand-built GSAP timeline is still the default answer.