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https://github.com/heygen-com/hyperframes.git
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Miguel Angel Simon Sierra
ed8bf475d3
Rework the timeline row model from one-row-per-stacking-layer to NLE "lanes": a row holds a time-sequence of non-overlapping clips, ordered top = front. Stacking only matters between clips that overlap in time. - Lane packing: per stacking context, sort clips by effective z-index desc (DOM order tiebreak) and greedily pack each onto the first lane whose members don't overlap it in time; else open a new lane. Lane's representative z is the max member z. Audio stays one clip per lane. - Lane-aware drag: dropping onto a lane joins it (clip takes the lane's z) when there's no time-conflict; a conflicting drop is rejected and the preview snaps to the nearest valid lane or a new-lane insertion. Between/above/below still create a new lane at that stacking level. - Overlap checks use the drag-preview start/duration, so conflict is judged by where the clip lands, not where it started. Only explicit drags write z-index; authored z is preserved and data-track-index is never rewritten.
@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