I have been using this add-on for many years. First in Windows and now in Linux. It is one of the easiest video down loaders to use for YT. I have another Firefox add-on that I use for other sites and it will work with YT but it is not as easy or fast. In fact it is like a snail with YT compared with "Easy Youtube Video Downloader". This add-on is usually one of the first, if not the first, to update to compensate to YouTube code changes, etc. I have been so pleased with it that I have bought several coffees for the developer over the years as it is worth it. I hope this add-on and the developer never disappears from Firefox.