Recreate a video ad as a JavaScript animation
Community report: the builder downloaded a ChatGPT ad from YouTube, extracted its audio, and gave Claude (Opus 5.5) access to ffmpeg. A prompt asked for a pure JavaScript recreation powered by the same audio, with subtle animations captured and high production value. It finished inside an hour in one go.
- Agent or tool
- Claude
- Topic
- Media & Content
- Reported on
- Hacker News
- Added
- 2026-10-15
Why it matters
Making content involves a lot of production steps around the creative part. Here an agent takes on some of those steps so the person can focus on the idea. It is one of 62 sightings filed under Media & Content on Agent Sightings (number 61 by interest), and one of 91 involving Claude.
How you could try it
Here is a reusable prompt, written by us in our own words, that captures the task. Paste it into Claude or any similar agent and adjust the details to your situation.
Creative task: recreate a video ad as a JavaScript animation. Outline first, then draft. Preserve my voice; ask before posting publicly.
The prompt breaks down into 3 steps you can check as the agent works:
- Creative task: recreate a video ad as a JavaScript animation.
- Outline first, then draft.
- Preserve my voice; ask before posting publicly.
Tip: Start small: run it once on a low-stakes example, read what the agent did, and only then let it run on real work.
Source
Read the original first-hand account on Hacker News: https://news.ycombinator.com/item?id=49942596. Our summary is a paraphrase; details are in the source.