Matt,

I haven't got a clue to answer either of your questions. I was told about it, by a friend, a while back when I was doing my version of "Fancy Underwear" with Joanne Cooper, but I instead got the video/files legitimately.

I have just googled "just add "ss" to the video URL in order to start the default YouTube downloader" and got this: http://en.savefrom.net/1-how-to-download-youtube-video/ which doesn't explain anything.

But the last thing I would do is install something from that page.

So no help there, sorry.

Alyn