Something wrong with my MacBook's screen

My screen is occasionally doing this strange thing where it sort of fades out here's a video;

YouTube - IMG_0116.MOV


Anyone know what might be causing this?

Thank you!

Could you give us some more info please.

Does this happen randomly or when you stress your CPU?
Is your MacBook overheating at this time by any chance?

It seems pretty random, but it does only happen after I have been using the computer for longer than half an hour or so. The screen can sometimes go fuzzy or flickery as well.

It seems to go through phases of doing this for about 10 minutes stopping for a while and then starting again.

EDIT: In fact i'm pretty sure overheating is nothing to do with it, because it happens when it is not under THAT much stress. Its seen worse and been fine.