I stand by my earlier review. I use this extension nearly every day.

Seven years later, I am continuing to use the downloader on nearly a daily basis. The need for it now is greater in that it's the only program these days that allows me to make high quality downloads.

I am more than happy with this add-on. Because of changes to Firefox, I was charged $30 in order to continue high definition downloads, which was fine with me. I don't mind supporting excellent software.

I'm continuing to use this software almost every day. There is no other way to reliably download YouTube videos.