pranavp10/video-compress ? reverse-engineered prompt

Build me a simple web app for compressing videos online, with a clean landing page and a main tool where someone can upload a video, compress it, and download the smaller version.

It should feel fast and easy to use, and the big promise should be that it can reduce file size a lot without wrecking quality. If possible, make it work even offline once the page is loaded, and support common video formats like MP4 and WebM. I’d like the UI to look modern and friendly, with a clear before and after experience so people can see how much space they saved.

Use whatever approach makes sense with FFmpeg in the browser or app, and if you need to look up the latest docs online, go ahead. Keep it polished, responsive, and simple enough that a normal person could use it בלי any setup.