Download youtube video without any Downloader

Here i post a trick that you can download video form youtube without any downloader

1:- open YouTube window.
2:- select the video.
3:- add "ss" in video URL before YouTube.
4:- and go. 
example:-
                   1:- This is video URL. 
  http://www.youtube.com/watch?v=tcxol5pl_eE&feature=g-vrec
                   2:- Add "ss" in video URL before YouTube. 
http://www.ssyoutube.com/watch?v=tcxol5pl_eE&feature=g-vrec 
                   3:- And Go.


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