I have used 3 different add-on's to download YouTube Videos that i want to keep to store for later in my download folder instead of saving on site... some times one or the others might download for a time. it was always iffy and frustrating trying to get any video down. I hesitated with this one, but got it anyway? This Video down loader for YouTube Videos works every time, easy to use and set up. Get this add-on, i promise you will be as completely satisfied as i am.