Stop Editing Videos by Hand. Let Your Agent Generate the Whole Thing.

You know the manual video editing grind. Stitch screenshots, line up frames, hand time keyframes. It takes forever and it's mind numbing. But what if you could skip all that and just tell an agent what you want?

This GitHub project does exactly that. It's called html-video and it generates a full video from a single HTML file. No editor. No timeline. No export settings. Just code.

What It Does

html-video takes your HTML and CSS, renders it to a video using a headless browser (Puppeteer/Playwright), and spits out a polished MP4. You write markup for your slides, animations, transitions, and the tool handles the rest.

Under the hood, it captures each frame of the animated HTML and compiles them into a video with proper timing, audio, and encoding. It's basically "turn your HTML presentation into a video" with zero manual labor.

The repo is at nexu-io/html-video.

Why It's Cool

A few things stand out to me:

First, no video editing software needed. You already know HTML and CSS. This tool turns those skills into a video generator. Want a slide that fades in after 3 seconds? Write a CSS animation. Done.

Second, it's agent friendly. If you're building an AI agent that needs to produce video content (like a tutorial, a demo, or a marketing clip), this is a perfect output format. The agent writes HTML, and the tool turns that into video.

Third, it gives you complete control. Every pixel, every timing, every transition is defined in code. No weird rendering glitches from video editors, no guesswork about where a frame will land.

Use cases are wide open. Generate product walkthroughs, create animated code demos, build automated explainer videos, or even produce social media clips with consistent branding.

How to Try It

Clone the repo and install dependencies:

git clone https://github.com/nexu-io/html-video
cd html-video
npm install

Then create or grab an HTML file with your content. Run the tool:

node generate.js --input your-file.html --output video.mp4

That's it. The tool will launch a headless browser, render your HTML with animations, and output the video. Check the repo README for more options like custom dimensions, framerate, and audio overlay.

Final Thoughts

This is a clever approach to video generation. Instead of fighting with timelines and keyframes, you write what you know. For devs building automated content pipelines, or anyone tired of hand stitching videos, it's a refreshingly simple solution.

Give it a shot next time you need to turn a presentation, a tutorial, or a demo into a video. It might save you a lot of click dragging.

Follow @githubprojects for more projects like this.