ff2mpv (for Windows)
Also tries to play links in mpv. Adapted for Windows. Send videos from Firefox to the mpv player using a toolbar button, context menu or keyboard shortcut (Ctrl+Shift+Space). Requires configuration: https://github.com/eastmarch/ff2mpv
What is ff2mpv (for Windows)?
ff2mpv (for Windows) is a Firefox add-on that enables sending videos from Firefox to the mpv player on Windows. It does not require a native client and can be used with a toolbar button, context menu, or keyboard shortcut.
This extension is a fork of ff2mpv by yossarian. It aims to make it easier to send videos from Firefox to the mpv player on Windows. A native client is not needed. But the ytdl:// protocol must to be added to the registry for it to work.
Instructions: https://github.com/eastmarch/ff2mpv Be sure to have both mpv and yt-dlp stored in the same folder.
ff2mpv (for Windows) is safe to use. It does not request any sensitive permissions.
ff2mpv (for Windows) is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.