Building a Browser MMD Studio with Three.js

MikuMikuDance still lives mostly on the desktop: PMX models, VMD motion, skirt physics, camera work. We built AnimaStage Lite — an open-source browser studio so you can load assets, preview motion, add FX, and export vertical Shorts without installing MMD. 🔗 Repository: https://github.com/FBNonaMe/animastage-lite 🌐 Live demo: https://animastage-lite.app/ 🎬 Open the studio: https://animastage-lite.app/app Why the browser? Short-form creators need: 9:16 framing and 1080×1920 export Fast PMX + VMD iteration Stable WebGL on everyday laptops AnimaStage Lite is not a full MMD clone — it’s a focused stage: load, animate, light, record. Stack Layer Tech UI React 19 + TypeScript 3D Three.js + React Three Fiber Build Vite 6 Physics Bullet (Ammo.js) HQ video WebCodecs + mp4-muxer Live video MediaRecorder All core features run client-side. What it does Drag & drop PMX/PMD, VMD, textures, HDR Timelin