content: There is already gui out there, but these are all "quick and dirty" solutions.  You really can't expedite some things; open terminal, type youtube-dl and paste a link, hit enter, its as simple as it gets.  I'm not a CLI nut, but in some cases, it just doesn't get any easier.  In addition, not sure about the Firfox addon, but YTDL downloads videos from almost anywhere, not just youtube. I don't know why the don't rename it because its misleading and probably limits its adoption.