This requires an additional program to work. But what's worse, this add-on also puts a big ugly QRcode in the upper left of the video. The QRcode points you to the developer's webpage. While this might be alright for some people, it is not alright for others. Disclosing this information prior to downloading might have made me not waste time on this add-on and the required accompanying program.

Videos originate with a file, and that file is referenced on the webpage. This add-on takes a relatively simple task and makes it overly complicated. There are other options, this option is terrible. They have an overly complex conversion system that they obviously wasted a ton of time on. Most people won't use a conversion system, but for those who would use it, they certainly wouldn't put up with a video that has a huge ugly QR code in the corner...

My guess is that the only reason this add-on doesn't directly download any video file is that it "needs" to slap that QRcode in the corner... So they purposely add more complexity and complications in order to ruin the resulting video.

Mozilla really needs a better review process. ANY review that doesn't mention this QRcode or the required additional program is obviously a shill rating. Again, the problem isn't the existence of those two issues, it's that they don't tell you that they have those two issues (because they are undoubtedly issues of their own making) Not recommended.