Petroly made a 15-second promo video with Claude Code, unit tests included
What happened
On October 27, Hacker News' front page reported that a Petroly developer used Claude Code to write a JavaScript renderer and produce a 15-second promo video without touching a video editor. The pipeline used SVG, sharp and FFmpeg to generate 375 frames, and the developer wrote unit tests for the video: whether the notification appears once the price hits the target, whether the list is sorted correctly, and whether frames show anomalies. The approach pairs programmatic rendering with automated testing, but a human still reviews the visuals; the tests do not judge them.
Written by AI from the coverage · updated 46 minutes ago
Coverage
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- Hacker News front pagePickPetroly developer builds a 15-second promo video with unit tests using Claude Code
A Petroly developer used Claude Code to write a JavaScript renderer that produced a 15-second promo video with unit tests, without opening a video editor. The pipeline generates 375 frames through SVG, sharp and FFmpeg. Tests check that the notification appears once the price hits the target, the list ordering and frame glitches; humans still review the visuals.
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