STUDIO — edit a selected element's GSAP motion path directly on the canvas: a dashed polyline through its x/y keyframes (or motionPath waypoints) with draggable diamond nodes, in composition coordinates so it tracks GSAP transforms. - Drag a node to rewrite its keyframe/waypoint; click to select a keyframe and park the playhead on it; double-click empty canvas to author a new motionPath; add/remove waypoints inline; right-click a keyframe node for the timeline's delete actions (remove keyframe / remove all). - The overlay spills into the canvas margin without bleeding into the side panels. - Keyframe add/remove key off the tween-relative percentage the GSAP writer expects, so edits from the Design panel, timeline, and motion path all persist and refresh consistently. Array-form keyframes (`keyframes: [...]`) are removable in both the acorn and recast writers. - Dragging a GSAP-animated element folds the offset through gsap.set instead of a conflicting CSS translate; the drag intercept trusts the live runtime so a deleted animation can't be resurrected from a stale parse cache. Gated behind the keyframes flag. CLI — `npx hyperframes keyframes [dir|file]` surfaces every GSAP tween, its keyframes (with absolute times), and an ASCII motion-path drawing so agents can read and edit motion as data instead of guessing at raw numbers. `--selector`, `--json` (machine-readable), filters internal hold markers, draws the path only for genuine multi-point/2-axis motion. Ships the `hyperframes-keyframes` skill (surface → read → edit → verify loop). PRODUCER — esbuild ESM banner also shims `__filename`/`__dirname` so bundled CJS deps (e.g. wawoff2) don't throw "__dirname is not defined" during render.
hyperframes
CLI for creating, previewing, and rendering HTML video compositions.
Install
npm install -g hyperframes
Or use directly with npx:
npx hyperframes <command>
Requirements: Node.js >= 22, FFmpeg
Commands
init
Scaffold a new Hyperframes project from a template:
npx hyperframes init my-video
cd my-video
preview
Start the live preview studio in your browser:
npx hyperframes preview
# Studio running at http://localhost:3002
npx hyperframes preview --port 4567
render
Render a composition to MP4:
npx hyperframes render ./my-composition.html -o output.mp4
lint
Validate your Hyperframes HTML:
npx hyperframes lint ./my-composition
npx hyperframes lint ./my-composition --json # JSON output for CI/tooling
npx hyperframes lint ./my-composition --verbose # Include info-level findings
By default only errors and warnings are shown. Use --verbose to also display informational findings (e.g., external script dependency notices). Use --json for machine-readable output with errorCount, warningCount, infoCount, and a findings array.
compositions
List compositions found in the current project:
npx hyperframes compositions
benchmark
Run rendering benchmarks:
npx hyperframes benchmark ./my-composition.html
doctor
Check your environment for required dependencies (Chrome, FFmpeg, Node.js):
npx hyperframes doctor
browser
Manage the bundled Chrome/Chromium installation:
npx hyperframes browser
info
Print version and environment info:
npx hyperframes info
docs
Open the documentation in your browser:
npx hyperframes docs
upgrade
Check for updates and show upgrade instructions:
npx hyperframes upgrade
npx hyperframes upgrade --check --json # machine-readable for agents
Documentation
Full documentation: hyperframes.heygen.com/packages/cli
Related packages
@hyperframes/core— types, parsers, frame adapters@hyperframes/engine— rendering engine@hyperframes/producer— render pipeline@hyperframes/studio— composition editor UI