Part 1

1
Go to the top of the browser

Go to the top of the browser and replace the www.with "ss", so it would look like ssyoutube.com/watch=

2
Then

After you do that, a page from http://en.savefrom.net/should open and wait for it to scan the video.

3
Download

After click on download, you your video should be downloaded!

Hope it helped!