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Miguel Ángel
5655dabff6
## Summary Two independent initiatives that improve agent DX and expand HyperFrames' reach. ### Initiative 1: Fix the Clip Animation Footgun - `gsap_animates_clip_element` lint rule now uses smart detection — only errors when GSAP animates `visibility` or `display` on a clip element - All other properties (opacity, transform, x, y, scale, etc.) are allowed silently - This was the #1 agent failure in QA (10/10 agents hit it on v0.2.1) ### Initiative 2: `<hyperframes-player>` Web Component - New `@hyperframes/player` package — zero dependencies, 3.3KB gzipped - Iframe-based web component with Shadow DOM for perfect isolation - Video-like API: `play()`, `pause()`, `seek()`, `currentTime`, `duration`, events - Controls overlay with play/pause, scrubber (mouse + touch), time display, auto-hide - Full docs page at `docs/packages/player.mdx` ## Before / After ### Clip animation lint **Before (10/10 agents hit this):** ``` ✗ gsap_animates_clip_element: GSAP animation targets a clip element. Selector "#title" resolves to element <div id="title" class="clip">. The framework manages clip visibility — animate an inner wrapper instead. Fix: Wrap content in a child <div> and target that with GSAP. ``` **After (only errors on actual conflicts):** ``` # This passes lint — no error: tl.from("#title", { opacity: 0, y: -50, scale: 0.8 }, 0); # This still errors — actual conflict with runtime: tl.to("#title", { visibility: "hidden" }, 3); ✗ gsap_animates_clip_element: GSAP animation sets visibility on a clip element. Fix: Remove the visibility/display tween. Use opacity for fade effects. ``` ### Embeddable player **Before:** No way to embed a composition in a web page. **After:** ```html <script src="https://cdn.jsdelivr.net/npm/@hyperframes/player"></script> <hyperframes-player src="./composition/index.html" controls></hyperframes-player> ``` ```js const player = document.querySelector('hyperframes-player'); player.play(); player.pause(); player.seek(2.5); player.addEventListener('ready', (e) => console.log('Duration:', e.detail.duration)); ``` ## Test plan - [x] 427 core tests pass (20 GSAP lint tests with smart detection) - [x] 7 player tests pass (formatTime + element registration) - [x] TypeScript compiles cleanly (core + player) - [x] Lint: GSAP animating clip with safe props → 0 errors - [x] Lint: GSAP animating clip with `visibility` → 1 error (correct) - [x] Player builds to 3.3KB gzipped ESM - [x] Lockfile updated for CI - [x] Docs page added at `docs/packages/player.mdx`
Hyperframes
Write HTML. Render video. Built for agents.
Hyperframes is an open-source video rendering framework that lets you create, preview, and render HTML-based video compositions — with first-class support for AI agents via MCP.
Why Hyperframes?
- HTML-native — AI agents already speak HTML. No React required.
- Frame Adapter pattern — bring your own animation runtime (GSAP, Lottie, CSS, Three.js).
- Deterministic rendering — same input = identical output. Built for automated pipelines.
- AI-first design — not a bolted-on afterthought.
Quick Start
npx hyperframes init my-video
cd my-video
Then open the project with your AI coding agent (Claude Code, Cursor, etc.) — it has HyperFrames skills installed and knows how to create and edit compositions.
npx hyperframes preview # preview in browser (live reload)
npx hyperframes render # render to MP4
Requirements: Node.js >= 22, FFmpeg
Documentation
Full documentation at hyperframes.heygen.com — start with the Quickstart, then explore guides, concepts, API reference, and package docs.
How It Works
Define your video as HTML with data attributes:
<div id="stage" data-composition-id="my-video" data-start="0" data-width="1920" data-height="1080">
<video
id="clip-1"
data-start="0"
data-duration="5"
data-track="0"
src="intro.mp4"
muted
playsinline
></video>
<img id="overlay" data-start="2" data-duration="3" data-track="1" src="logo.png" />
<audio
id="bg-music"
data-start="0"
data-duration="9"
data-track="2"
data-volume="0.5"
src="music.wav"
></audio>
</div>
Preview instantly in the browser. Render to MP4 locally. Let AI agents compose videos using tools they already understand.
Packages
| Package | Description |
|---|---|
hyperframes |
CLI — create, preview, lint, and render compositions |
@hyperframes/core |
Types, parsers, generators, linter, runtime, frame adapters |
@hyperframes/engine |
Seekable page-to-video capture engine (Puppeteer + FFmpeg) |
@hyperframes/producer |
Full rendering pipeline (capture + encode + audio mix) |
@hyperframes/studio |
Browser-based composition editor UI |
AI Agent Skills
HyperFrames ships skills that teach AI coding agents (Claude Code, Gemini CLI, Codex, Cursor) how to write correct compositions and GSAP animations. Use these instead of writing from scratch — they encode framework-specific patterns that generic docs don't cover.
Install via CLI (recommended)
# Install all skills (HyperFrames + GSAP) — runs automatically during `hyperframes init`
npx hyperframes skills
# Or install to a specific agent
npx hyperframes skills --claude
npx hyperframes skills --cursor
Or via npx skills add
# HyperFrames skills (hyperframes-compose, hyperframes-captions)
npx skills add heygen-com/hyperframes
# GSAP skills (gsap-core, gsap-timeline, gsap-scrolltrigger, gsap-plugins, gsap-performance, gsap-utils, gsap-react, gsap-frameworks)
npx skills add greensock/gsap-skills
Installed Skills
| Source | Skills | What they teach |
|---|---|---|
| HyperFrames | hyperframes-compose, hyperframes-captions |
HTML composition structure, class="clip" rules, data-* attributes, timeline registration, rendering constraints |
| GSAP | gsap-core, gsap-timeline, gsap-performance, gsap-plugins, gsap-scrolltrigger, gsap-utils, gsap-react, gsap-frameworks |
Core API, timeline sequencing, ScrollTrigger, plugin usage, performance best practices |
In Claude Code, invoke with /hyperframes-compose, /hyperframes-captions, /gsap-core, etc.
Contributing
See CONTRIBUTING.md for guidelines on how to contribute.
License
See LICENSE for details.