cant get a video onto my iPod classic

the video is Left 4 Dead 2: Funny Moments Of Getting Owned Part 1
no matter what i try, iTunes just wont copy it onto my iPod, even if its the same format as the ones that are ON my iPod >:(
the video is 10 minutes long, and i got it from YouTube.
It's really hilarious and i want it on my iPod NAO