Introducing SceneFlow: Script-to-Screen Synchronization for AI Cinema. When we watch an AI-generated video, we usually only see the final result. The prompt that directed it remains locked away in a text file or prompt box. You never get to see what the model actually followed—and more importantly, what it completely missed. I built SceneFlow to change that. It’s a free, open-source web tool that connects your written script or prompt with video playback side-by-side in real-time. My goal isn't just to make a cool playback tool, but to make AI video more engaging and educational. By locking the prompt to the video timeline, you can study every single second: • Did the model respect the camera dolly or did it invent its own move? • Did the character action trigger on cue? • Where did the prompt breakdown or fail, and what can we learn from those mistakes? What SceneFlow does: ▶ Synchronized Playback — Video player on the left, interactive script on the right, perfectly locked in real-time. 🎨 8-Category Color Spectrum — Active lines light up across Dialogue, Action, Camera, Framing, Audio, VFX, Transitions, and Environment. 🎬 Dual Script Formats — Supports adapted Screenplays as well as state-machine "Auteur Scripts" with modular tags ([CAM], [ACT], [AUDIO]) chained with '->'. 🛠 In-Browser Cue Editor — Highlight any text to create a cue, snap timestamps to the video with one click, and auto-align cues. 📚 30+ Built-In Examples — Explore full synced scenes from The Written Motion anthology, character dramas, and kinetic action vignettes. 🎛 Reading & Workspace Controls — 6 paper styles (including OLED Blackout & Slate for video overlays), adjustable column widths, and responsive video scaling. ⚡ 100% Client-Side & Private — Runs entirely in your browser with zero installation, no account needed, and full PWA support. Whether you want to dissect my prompts (and my mistakes!), study how models interpret instructions, or sync your own projects: 🌐 Try the Live App: sceneflow.taruma.my.id/ (Click +Guide for an interactive tour) 💻 GitHub Repository: github.com/taruma/SceneFlow 📖 Official Launch Article: taruma.substack.com/p/scenef… ✍️ The origin of "Auteur Script": taruma.substack.com/p/from-c… Pick a scene from the catalogue, hit the spacebar, and see how prompts come alive on screen!