4K Video Downloader offers a few shortcut keys, even it neglects the shortcuts a little. At least, you can start the download immediately by pressing Ctrl + V.
Program name: 4K Video Downloader (General)
4K Video Downloader is a multi-platform software for downloading video from popular websites. It supports downloading video from YouTube, Daliymotion, Facebook, Vimeo and more. Despite "4K" in its name, the program can download 8K videos too.
Web page: https://www.4kdownload.com
Useful technology tips and keyboard shortcuts will appear in your inbox.