Wrenbench

One small automation a day.

Every reel, written up with the exact steps, prompts and files. Built with n8n, Claude Code, Magica and ffmpeg by a working developer.

Burn captions and a music bed into a vertical video with one ffmpeg command

How the Wrenbench factory turns four still images and four voice clips into a 1080x1920 reel: Ken Burns zoom, burnt-in ASS captions, a logo and a music bed that ducks under the voice.

2026-10-27 · build

Get an LLM to return a usable video script as strict JSON, with retries

How the Wrenbench factory turns a topic and a style guide into a four-scene reel script that code can read, and what it does when the model's answer is not valid JSON.

2026-10-27 · build

Why I automated my own content pipeline before posting a single reel

The setup behind this site: a factory service that turns a topic into a reel, an approval button on Telegram, and nothing published without a human tap.

2026-10-27 · public