Recreate a video ad as a JavaScript animation
The author had Claude recreate a downloaded ad video as a pure JavaScript animation with the original audio, working autonomously with ffmpeg in under an hour.
What they did
The author 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 using the same audio, with subtle animations captured and high production value. The author left and told it to work autonomously until done.
How it went
It finished in under an hour in one go. The only visible difference from the original was the logo at the end of the video.
Worth knowing
The prompt stressed quality, asked the agent to work autonomously, and supplied both the video and audio files; the author says this was an experiment and the original belongs to OpenAI.
Labels
The author had Claude recreate a downloaded ad video as a pure JavaScript animation with the original audio
A prompt asked for a pure JavaScript recreation using the same audio, with subtle animations captured and high production value.
The author had Claude recreate a downloaded ad video as a pure JavaScript animation with the original audio
The author downloaded a ChatGPT ad from YouTube, extracted its audio, and gave Claude (Opus 5.5) access to ffmpeg.
The “Material” label failed its quality check and is not used for selection.
Details
- Agents
- Claude
- Source
- Hacker News
- Source date
- Oct 3, 2026
- Accounts
- 1
- In registry since
- Oct 12, 2026