I uploaded a home made video of a world cup goal as seen from a plaza screening the game. Loads of crowd noise, AND a big chunk of the video did not have the screen visible (though I guess the commentator could be heard). About 20 minutes later I got a similar email saying FIFA had claimed the rights & the clip is now restricted in some countries. I guess they could have data mined from the title etc., but that's still damn quick for a live broadcast match.