Building Reelcraft: AI-Powered Blog-to-Video Storyboards with Gemini Interleaved Output

TL;DR : I built Reelcraft, a tool that transforms any blog post into a cinematic video storyboard with AI-generated scene illustrations — all in a single Gemini API call using interleaved text+image output, deployed on Cloud Run. The Problem Content marketers repurpose 3-5 blog posts into social videos every week. Each takes 4+ hours: write a script, hunt stock photos, design in Canva, time everything. That's 15-20 hours per week on a task that should take minutes. What Reelcraft Does Paste any article or blog post, and Reelcraft generates a complete video storyboard: Scene-by-scene narration scripts with timing estimates AI-generated illustrations for each scene (not stock photos — custom visuals) Interactive timeline showing scene durations proportionally PDF export for sharing with video editors Storyboard history saved to SQLite The magic: everything generates in a single API call using Gemini's interleaved text+image output. The Gemini Interleaved Output Pipeline This is what make