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https://github.com/heygen-com/hyperframes.git
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Miguel Angel Simon Sierra
3e342cff9c
Auto-expansion picks the composition whose clip window contains the playhead, and those windows are half-open. With the playhead parked on the last clip's end - where playback stops - it sat inside nothing, so every expanded sub-composition row and its keyframe lanes collapsed to a single host row. Accept the closing boundary, but only when the strict pass matched nothing, so a playhead on the seam between two adjacent clips still expands the one that is starting.
@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