nexu-io/html-video

html-video turns plain HTML and CSS into polished, animated MP4 videos, right on your own laptop. You describe what you want (or paste a link to an article or GitHub repo), and your existing coding agent builds a multi-scene video from that content. There are no per-render fees, no cloud rendering, and no vendor lock-in. It ships with 21 ready-made templates for things like data charts, product promos, title cards, and explainers, plus optional AI-generated background music and narration. The pipeline is straightforward. You give the tool a prompt, a URL, or a repo link. The studio fetches the source material and flattens it into text your agent can read. Your coding agent then reads that material, decides how to break it into scenes, and picks a visual template that fits. Each scene becomes its own self-contained animated HTML page. A headless browser records each of those pages as video, and ffmpeg stitches them together into one final MP4 file. If you want a soundtrack, an AI service called MiniMax can generate background music or voice narration that gets mixed in at the end. This is built for founders, content creators, and developer advocates who want to produce video content without learning a dedicated video editing tool or paying for cloud rendering. For example, you could paste a link to a blog post about your startup and get a paced, multi-frame explainer video where every line traces back to the actual article. You could also feed it a GitHub repo to create a structured walkthrough of what an open-source project does. The most notable design choice is that html-video is built as a "meta-layer" over rendering engines. Right now, the default engine (Hyperframes) is fully working and produces real MP4s. The architecture is designed so that other rendering engines can be plugged in later without changing how the agent thinks about your content or which templates are available. The rendering engine becomes an implementation detail behind the scenes, so you can focus on the story you want to tell.