Wonderful extension, I have been using it for last 9 years

A very good extension, when it works. As soon as YT changes it algorithm, it stops working, and you have to wait or a fix. MP3 sometimes works, and now also the mp4 mvie downloads have stopped. Bummer

every time I download firefox. this extension has to be download.

mostly superb!!!

I can't get it to work. A YouTube video "downloads" in 3 seconds but appears nowhere in my computer.

Absolutely brilliant and regularly updated. I have been using this add-on for a number of years and it has been extremely useful. The latest version is the slickest yet.

ended up several times with a zero byte mp4

Very easy and good quality