I Made a Product Demo Video Entirely with AI

I needed a demo video for an RFP automation platform I'm building. The typical approach: record your screen, stumble through clicks, re-record when something breaks, then spend an hour in a video editor syncing voiceover. I've done it before. It's painful. So I tried a different approach: let AI do the whole thing . Claude Code wrote the entire recording pipeline — Playwright scripts, ffmpeg assembly, speed control, subtitle generation edge-tts generated the narration with Microsoft's neural voices Gemini 3.1 Pro reviewed the final video for audio/video sync issues The result: a 3-minute narrated demo with 14 scenes, variable speed segments, and subtitles. No video editor. No screen recording app. No manual voiceover. 🎥 Watch the video demo on Loom Note: Interactive video player available on the original article Here's how the whole process worked — including the parts that broke. The Pipeline Playwright (record) → edge-tts (voice) → ffmpeg (assemble) → Gemini (QA) Step 1: Claude Code