This is clearly one of those "better late than never" things. Do you have a Chromecast, or another Google Cast enabled device (like an Android TV, for example), or an Apple TV? Do you use Facebook (who doesn't?) and wish there was an easy way to see those videos popping up in your News Feed on your TV? Well, there's finally a solution. Facebook is adding support for the Google Cast protocol as well as Apple's AirPlay. This is already live in the social network's iOS app as well as on its website. You'll soon be able to cast videos to your Chromecast from the Facebook for Android app...
Source: http://www.gsmarena.com/you_can_now_watch_facebook_videos_on_the_big_screen_through_chromecast_or_apple_tv-news-21059.php