How to get a video that you've just watched on youtube without downloading it !

Hey guys,how are you doing? have you ever watched a YouTube video , liked it , and wanted to get it ?
well, I've you've already watched that video, then, believe it or not, it's already downloaded. you just have to do some tricks to get it.I'll explain these tricks here

Before you continue reading this post,you should know that this trick works for windows in Firefox, Chrome and Opera , maybe other browsers , but I'm not sure
well, here we go
1 - If you feel like the video, then just go to start and  type ( %temp%) without brackets and hit enter

 It'll be better if you did that step before the video is fully loaded , it'll make things easier

2 - take a look at the %temp% folder structure

ok, as you can see the files 2 and 3

I had two YouTube videos , one of them is fully loaded, the other was still loading
How do you know the file of the video?
I'll tell you. their file name is usually flaxxxx.tmp
and if the video is still loading, keep hitting F5 on that folder and notice the file size change
now you found your video

 3 - Now ,finding the video is already done, the next step is to wait until the video is fully loaded ( or file size stops changing ) as in pic below

(you can see the grey bar which is fully loaded . now you can move on to the next step )

4 - Now, we'll need a software called unlocker you need to copy the video file ( you can't copy a file in use already without that software )
5 - R-Click your video and choose Unlocker
6 -  Choose Copy
7 - A file save dialog will appear.
you can use the video name ( from YouTube page ) and make sure it ends with .flv

8 - Done, now you got your video, you can use VLC Player if you had trouble viewing the video
9 - If you are ok with software, there's a huge list of 70+ Methods here .
10- Enjoy :D