Several years ago this was one of my favorite add-ons.
It would download music,video, and images with no problems. I used it a lot.
Now it won't download a lot of Youtube videos, some streaming video, or any images. When it does work it leaves a water mark or some kind of box on the video. It's slow, even slower to aggregate the video and audio to make another worthless water marked video. To get rid of the mark. you have to pay this pirate for a license. I am not going to pay for this add-on that doesn't work nearly as well as it did in the past. There are better video downloaders that are free with unmarked downloaded video. Try Open Video Downloader. Google it, don't pay the pirate.