Rated 2 out of 5 stars
This is identical to the Greasemonkey script of the same name. Needs update.
This only gives me a choice of up to 720p, even when there is 2160p available, which BTW 'YouTube Download Button' handles no problem. The only thing I like about this script is, it names the file from the page title, which YDB does not. Another thing that is annoying is, when I click the drop-down button, the keyboard does not work to select the link I want. Other downloaders allow keyboard interaction.