This extension is fantastic, I use it all the time. Easier to use and somewhat more consistent than a few other video downloaders I have. My one thing, not worth taking a star off, is that it can't download 'members only' videos, even if you're a member of the channel and can watch them. I assume this is due to encryption on both ends or something unbeatable like that. No other downloader I have can do this either. It requires a direct screen capture app.