Youtube-dl: Command-line program to download videos
I created a somehow complete gui for youtube-dl, It is opensource in github and has a combination of youtube-dl, ffmpeg and mpv player. Written in java. It is called musicboo and I programmed it after learning java in my university. It has been working for some years perfectly with the automatic youtube-dl update system, although I have moved my backend many times preserving a domain.http://musicboo.hontzakdio.com/