If you’re sick of your beautiful videos looking crummy on Facebook, there’s good news for you. After some super HD videos started popping up on the social network, Facebook now confirms to TechCrunch it’s testing 4K video uploads and viewing using the 2160p UHD-1 Ultra-High-Definition Television standard. Some Pages and profiles can now post 4K videos to Facebook, as well as watch them. It’s been a long time coming, considering YouTube first started experimenting with 4K video playback in 2010.
Facebook finally adapts to 4K video | TechCrunch