Free Setup Guide

Render AI Videos Programmatically with HyperFrames (Free)

HeyGen open-sourced the HTML-to-MP4 engine behind their $99/mo avatar product. Released March 10, 2026 under Apache 2.0, HyperFrames hit 15K GitHub stars in two months — because it solves a real problem every dev who has touched video automation knows too well.

Adam BurgeAdam BurgeNano Flow

Instead of wiring together Puppeteer, ffmpeg, and GSAP by hand (or paying Creatomate $200/mo), you write a composition in plain HTML and CSS, add timing markers, and run one CLI command. The output is a frame-accurate MP4. It is designed from the ground up for AI agents to generate video without a human in the loop.

Step 1: Install HyperFrames

Make sure Node 18+ is installed, then run:

bash
npx hyperframes init my-video
cd my-video

This scaffolds a starter project with a sample composition, an assets/ folder, and a render.config.json.

Step 2: Write Your Composition in HTML + CSS

Open src/composition.html. Think of it as a normal webpage, except you annotate elements with data-start and data-end attributes (milliseconds) to control when they appear:

html
<div class="title"
data-start="0"
data-end="3000"
style="font-size:64px; color:#fff;">
Your headline here
</div>

<audio src="../assets/voiceover.mp3" data-track="main" />

Drop any font, image, Lottie JSON, or caption file into assets/ and reference it with a relative path — no upload step, no dashboard.

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