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HyperFrames
Open-source framework from HeyGen that turns HTML, CSS, media, and seekable animations into deterministic MP4 video.
HeyGen's tagline is "Write HTML. Render video. Built for agents." It renders by seeking each frame in headless Chrome and encoding with FFmpeg. Use the CLI (npx hyperframes init, preview, and render), AI coding agents with skills, or HeyGen cloud rendering. It supports GSAP, CSS, Lottie, Three.js, Anime.js, and WAAPI, and can also output WebM, MOV, GIF, and a PNG sequence. It requires Node.js 22+ and FFmpeg. The license is Apache 2.0.
Suggested by @DanielZambrini on X
Where it ranks
12 in Image and video
Rendering a video from HTML, including from a coding agent.
See the image and video list
Pricing
Free
Apache 2.0. The repository says there are no per-render fees. HeyGen cloud rendering is a separate product. Check HeyGen for cloud pricing.
Checked
Added October 22, 2026
Last verified October 22, 2026
Dated releases
HyperFrames v0.8.185: an open-source framework that renders HTML to deterministic video.
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