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https://github.com/heygen-com/hyperframes.git
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Miguel Ángel
825c0aa194
When GSAP applies transforms (scale, translate) to the root composition element during playback, rootRect.width/height from getBoundingClientRect() changes to reflect the transformed size. The overlay scale calculation (rootScaleX/Y = iframeRect / rootRect) then produces wrong values, causing overlays to appear at incorrect positions during animated playback — especially visible during scroll animations (y transform) and entrance animations (scale transform). Fix: use the composition's declared data-width/data-height attributes for scale calculation. These are the canonical dimensions that don't change with GSAP transforms. Falls back to rootRect dimensions when the attributes aren't present (non-composition elements).
@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