This used to be, and worked excellent a few years ago, but now it's no good. It almost never downloads any videos, and when it does it says I have to purchase a converter to be able to watch it on Windows 10
The converter is $59.95 for one year of use, with a limit of 10 videos a month. It's not worth it to me, when there are other video downloaders that are totally free, and work almost everywhere and do not need to be converted.