record-screen

Record a Chrome tab via CLI by running node record.js start --tab 1 --out demo.mp4. A WebSocket bridge and Chrome extension capture frames at 5 FPS, encoding the output to MP4 or WebM.

Screen recording with ffmpeg supports browser automation by capturing Chrome tab frames in real-time and encoding them to video. This enables end-to-end capture workflows for documentation, demonstrations, and debugging in development and QA contexts.

You can add captions to a screen recording via CLI using the on-demand captions feature. When you start a recording, the tool outputs an MP4 or WebM video file accompanied by a separate captions file.

You need a Chrome extension to capture browser tabs to video because it provides the real-time frame capture mechanism. The extension communicates through a WebSocket bridge to the CLI, which uses ffmpeg-static to encode the 5 FPS frames into MP4 or WebM.

The best way to automate screen capture for QA debugging is using a CLI tool that records Chrome tabs to video, lists available tabs, and queries recording status. This approach integrates into automated testing pipelines to capture end-to-end workflows as MP4 or WebM files.