Pagecorder is an API that records your web page as video, including screen and audio. It's performance-oriented and supports 60 FPS at 4K.
Just add two JavaScript calls to your page to signal the start and end of the recording, post the link (or a self-contained ZIP bundle) to the API, and voilà!
Use it for social video from HTML templates, animated dashboards, product demos, or CSS/Canvas/WebGL motion graphics. Recordings are billed per second. Failed jobs are free.