Green Screen (aka chromakey) in Final Cut Pro X is easier than you might think to do but i show you how in my own way how to use a green screen to use in your video's edited on my MacBook.
My Links you my want to check out !
https://www.youtube.com/user/iknightair
https://www.facebook.com/chris.baldwin.airwolf
https://twitter.com/chrisairwolf