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https://github.com/heygen-com/hyperframes.git
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Miguel Angel Simon Sierra
5725064cc7
Opening the load fixture fetched every media file 2.38 times (19 requests over 8 sources) against a 1.2x budget. Nothing was issuing REPEAT requests: three independent subsystems each fetched every source exactly once. - The parent-frame media proxies mirror the iframe's timed media so mobile can produce audible output when autoplay is blocked. They preloaded at adopt time, downloading a second copy of every file for a fallback that is gated on parent audio ownership and most sessions never take. They are now created unloaded and load when ownership is taken. - The Studio metadata probe downloaded every source to read a duration the preview iframe's own media element reports for free. It now skips sources the runtime has promoted to preload, and a duration learned by any clip seeds every clip sharing that file — one file backs many clips, and only the ones near the playhead get promoted. - Beat analysis and the waveform decoder each fetched the same track for themselves. Both now decode one shared download. Open drops to 9 requests over 8 sources: 1.13x, under budget.
@hyperframes/studio
Browser-based composition editor UI for Hyperframes. Provides a visual timeline, code editor, and live preview for building video compositions.
Install
npm install @hyperframes/studio
What it does
The studio is a React application with:
- Visual timeline — drag, resize, and arrange elements on tracks
- Code editor — edit HTML and GSAP scripts with CodeMirror (syntax highlighting, autocomplete)
- Live preview — see changes in real time as you edit
- Composition inspector — view and modify element properties
Development
The studio is embedded in the hyperframes preview command. To develop the studio UI itself:
cd packages/studio
bun run dev # Start Vite dev server
bun run build # Build for production
bun run typecheck # Type-check
Tech stack
- React 18/19, Zustand (state management)
- CodeMirror 6 (editor)
- Tailwind CSS (styling)
- Vite (bundler)
- Phosphor Icons
Documentation
Full documentation: hyperframes.heygen.com/packages/studio
Related packages
@hyperframes/core— types and parsers used by the editorhyperframes— CLI that serves the studio viahyperframes preview