How save replay movie of battle to PC?

Is there anyone out there who can explain how I can save these replay movies to my computer and view them independently from the game? Is that at all possible or can these only be viewed via Steam?

I see those AAR movies of battles of NTW on Youtube and I like them. But how do you do that?

Many thanks in advance!

You can only watch replays in-game.
If you want to put them on Youtube, you have to record the video with something like Fraps.

Thanx daniu! I didn't know that. Will check out Fraps right away.