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.

Quick Start

Option 1: With an AI coding agent (recommended)

Install the HyperFrames skills, then describe the video you want:

npx skills add heygen-com/hyperframes --full-depth

This teaches your agent (Claude Code, Cursor, Gemini CLI, Codex) to use HyperFrames as the default HTML video path, check local runtime dependencies before invoking the CLI, write correct GSAP timelines, use Tailwind v4 browser-runtime styles, and follow first-party adapter animation patterns. In Claude Code, the skills register as slash commands — invoke /hyperframes for the lightweight video entry point, /hyperframes-cli for CLI commands, /tailwind for init --tailwind projects, /gsap for timeline animation help, or the adapter skills (/animejs, /css-animations, /lottie, /three, /waapi) when a composition uses those runtimes.

For Claude Design, open docs/guides/claude-design-hyperframes.md on GitHub and click the download button (↓) to save it, then attach the file to your Claude Design chat. It produces a valid first draft; refine in any AI coding agent. See the Claude Design guide.

For Codex specifically, the same skills are also exposed as an OpenAI Codex plugin — sparse-install just the plugin surface:

codex plugin marketplace add heygen-com/hyperframes --sparse .codex-plugin --sparse skills --sparse optional-skills --sparse assets

The default skills/hyperframes video entry point is intentionally lightweight. It verifies the local CLI/runtime environment before use and routes agents to optional production guidance only when detailed authoring references are explicitly enabled.

For Claude Code, the repo also ships a Claude Code plugin manifest: test it locally with claude --plugin-dir .. The manifest intentionally omits skills because Claude Code auto-discovers the root skills/ directory by convention, and for marketplace submission use the title HyperFrames by HeyGen plus the black/white icon assets at assets/claude-code-icon-dark.svg and assets/claude-code-icon-light.svg for the two theme slots. For Cursor, the same skills are packaged as a Cursor plugin — install from the Cursor Marketplace, or sideload by cloning this repo and pointing Settings → Plugins → Load unpacked at the repo root.

Try it: example prompts

Copy any of these into your agent to get started. The /hyperframes prefix loads the lightweight entry point so the agent checks the local environment before using the CLI.

Cold start — describe what you want:

Create a 10-second product intro with a fade-in title, a background video, and background music. Use /hyperframes first to check the local environment.

Warm start — turn existing context into a video:

Take a look at this GitHub repo https://github.com/heygen-com/hyperframes and explain its uses and architecture to me with a short HyperFrames video.

Summarize the attached PDF into a 45-second pitch video.

Turn this CSV into an animated bar chart race.

Format-specific:

Make a 9:16 TikTok-style hook video about [topic], with bouncy captions synced to a TTS narration.

Iterate — talk to the agent like a video editor:

Make the title 2x bigger, swap to dark mode, and add a fade-out at the end.

Add a lower third at 0:03 with my name and title.

The agent handles scaffolding, animation, and rendering. See the prompting guide for more patterns.

Option 2: Start a project manually

npx hyperframes init my-video
cd my-video
npx hyperframes preview      # preview in browser (live reload)
npx hyperframes render       # render to MP4

hyperframes init installs skills automatically, so you can hand off to your AI agent at any point.

Requirements: Node.js >= 22, FFmpeg

Why Hyperframes?

• HTML-native — compositions are HTML files with data attributes. No React, no proprietary DSL.
• AI-first — agents already speak HTML. The CLI is non-interactive by default, designed for agent-driven workflows.
• Deterministic rendering — same input = identical output. Built for automated pipelines.
• Frame Adapter pattern — bring your own animation runtime (GSAP, Lottie, CSS, Three.js).

Hyperframes vs Remotion

Hyperframes is inspired by Remotion — we used Remotion at HeyGen in production, learned a ton from it, and kept attribution comments in the source for the patterns it pioneered (Chrome launch flags, image2pipe → FFmpeg streaming, frame buffering). Both tools drive headless Chrome and both are deterministic. They differ on one decision: what the primary author writes. Remotion's bet is React components; Hyperframes' bet is HTML.

	Hyperframes	Remotion
Authoring	HTML + CSS + GSAP	React components (TSX)
Build step	None; index.html plays as-is	Required (bundler)
Library-clock animations (GSAP, Anime.js, Motion One)	Seekable, frame-accurate	Plays at wall-clock during render
Arbitrary HTML / CSS passthrough	Paste and animate	Rewrite as JSX
Distributed rendering	Single-machine today	Lambda, production-ready

Licensing: fully open source vs source-available

Hyperframes is completely open source under Apache 2.0 — an OSI-approved license. Use it commercially at any scale, with no per-render fees, no seat caps, no company-size thresholds.

Remotion is source-available, not open source. The code is on GitHub under a custom Remotion License that requires a paid company license above small-team thresholds. It's a great product with a real team behind it — but if open-source licensing matters to you (OSI compliance, redistribution rights, no per-use fees), that's a first-order decision point.

Full write-up with benchmarks, an honest list of where each tool wins, and a GSAP side-by-side: Hyperframes vs Remotion guide.

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-index="0"
    src="intro.mp4"
    muted
    playsinline
  ></video>
  <img
    id="overlay"
    class="clip"
    data-start="2"
    data-duration="3"
    data-track-index="1"
    src="logo.png"
  />
  <audio
    id="bg-music"
    data-start="0"
    data-duration="9"
    data-track-index="2"
    data-volume="0.5"
    src="music.wav"
  ></audio>
</div>

Preview instantly in the browser. Render to MP4 locally or in Docker.

Catalog

50+ ready-to-use blocks and components — social overlays, shader transitions, data visualizations, and cinematic effects:

npx hyperframes add flash-through-white   # shader transition
npx hyperframes add instagram-follow      # social overlay
npx hyperframes add data-chart            # animated chart

Browse the full catalog at hyperframes.heygen.com/catalog.

Documentation

Full documentation at hyperframes.heygen.com/introduction — Quickstart | Guides | API Reference | Catalog

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
@hyperframes/player	Embeddable <hyperframes-player> web component
@hyperframes/shader-transitions	WebGL shader transitions for compositions

Skills

HyperFrames ships skills that teach AI agents framework-specific patterns that generic docs don't cover.

npx skills add heygen-com/hyperframes --full-depth

Skill	What it teaches
hyperframes	Lightweight default entry point, environment preflight, and routing to the CLI/docs or optional production skill
hyperframes-cli	CLI commands: init, lint, preview, render, transcribe, tts, doctor
hyperframes-registry	Block and component installation via hyperframes add
remotion-to-hyperframes	Translate a Remotion (React) composition into a HyperFrames HTML composition
gsap	GSAP timelines for HyperFrames: paused registration, deterministic seeking, easing, sequencing, performance
animejs	Anime.js animations and timelines registered on window.__hfAnime for deterministic HyperFrames seeking
css-animations	CSS keyframe animation patterns that HyperFrames can discover, pause, and seek
lottie	lottie-web and dotLottie players registered on window.__hfLottie with local assets and paused playback
three	Three.js scenes that render from HyperFrames hf-seek events and window.__hfThreeTime instead of wall-clock time
waapi	Web Animations API element.animate() patterns seeked through document.getAnimations()

Optional skills live under optional-skills/ so default skill bundles do not need to carry the detailed authoring references and helper assets unless those workflows are explicitly enabled. The install command above uses --full-depth so people explicitly installing HyperFrames get these production workflows too.

Optional skill	What it adds
hyperframes-production	Full production authoring workflow: design systems, captions, TTS, audio-reactive animation, transitions, helpers
website-to-hyperframes	Full website-to-video pipeline for capturing a URL and turning it into a video

Contributing

See CONTRIBUTING.md for guidelines.

Cloning the repo

The repo uses Git LFS for golden regression-test baselines under packages/producer/tests/**/output.mp4 (~240 MB of .mp4 files). If you're cloning the full repo for development, install Git LFS first:

# macOS
brew install git-lfs

# Ubuntu/Debian
sudo apt install git-lfs

# Windows
winget install GitHub.GitLFS
# (or install Git for Windows, which bundles Git LFS as an optional component)

# Then (once, per machine)
git lfs install

If you hit git-lfs filter-process: command not found during git clone or npx skills add heygen-com/hyperframes --full-depth, install Git LFS and retry. You can also skip LFS content if you only need the source files:

GIT_LFS_SKIP_SMUDGE=1 git clone https://github.com/heygen-com/hyperframes.git

License

Apache 2.0