[bjano]

WebCodecs is available since the latest Chrome, so it is now possible to use hardware accelerated codecs from the browser. Instead of uploading & downloading GBs of data and paying for someone else's processing power, you can do everything locally as long as you don't mind a few limitations.

I am working on a project using this approach: https://vidmix.app

(still plenty of minor bugs, I was planning for a proper Show HN soon)

Also because both the preview and the rendering is done with WebGL the result is guaranteed to match what you see while editing, unlike with some cloud-based editors where a different stack on the rendering backend is trying to replicate what the browser is doing with js+css