MdAnaskhan0/Download_Manager ? reverse-engineered prompt

Build me a Windows video downloader extension called VidGrab that works in Brave and Firefox.

I want it to detect playable video streams on a page, show a badge on the toolbar icon when it finds something, and let me click the icon to pick a stream to download. It should also add a blue “Download this video” button when I hover over a video player, so downloading feels easy and obvious.

Make it work with common site videos, including streaming formats when possible, and save files into a VidGrab folder inside Downloads. If helpful, use ffmpeg and yt dlp when they’re available for better support and merging. I also need a simple build step that creates separate browser versions for Brave and Firefox, plus an install script for setting up the Firefox host and the Brave extension connection on Windows.

If you need current browser extension details, look up the latest docs online and keep the setup as simple as possible.