my mac wont play a quicktime movie file, it keeps saying i need a codec and then bringing me to this page. there is no links on where to get this codec? help!!!

I try play this quicktime movie file and then it says i do not have the required codec and the only thing i can press is "ok" or "tell me more" and then it just brings me to this page, it says nothing about how to obtain this certain codec. I need this to work on my macbook! Its not the video file because it works perfectly fine on the iMacs at University. Help me out, please!