How to see a private video link from a certain Youtube channel?

[babytaengoo]

I really wonder how the people who I follow in twitter get this links of private videos from a certain youtube channel..For example this "ThatXX" channel on Youtube uploaded a private video, then how can I know or get the link of it?
I wanna learn how to get this links of private videos.
Thanks!

[Lord Daniel Vogel]

Private videos are, hence the name, private. You can not access a private video if you don't know the link. The link can only be given out by the account holder, or everybody he gave it to.
If you wanted to find out a private video url you have to
a) Brute force it - Write a script that tries all combinations of watch?v=abcdefghijk... where it can be a number, a letter (case sensitive) or a few different symbols, until you hit an unlisted video from the channel you're looking for
b) Ask the account holder
c) Find out where the account holder has made the link public, on a blog or maybe only embedded somewhere

There is no "click here to show all private videos" feature, for that would not keep videos private.