YouTube video url transformations

There are some really innovative ways that you can transform the youtube url quite easily. Here are a few

Just the video frame

Use /v/ 

e.g. http://www.youtube.com/watch?v=hU4cbxpe49Y to http://www.youtube.com/v/hU4cbxpe49Y

Download YouTube Video

Provided by a third party (save from). Add ss after www.

e.g. http://www.youtube.com/watch?v=hU4cbxpe49Y to http://www.ssyoutube.com/watch?v=hU4cbxpe49Y