4K Streaming stories

What the hell? YouTube is now supporting video resolution that's high enough to satisfy those persnickety cinematographers who shoot digital cinema? That resolution is called 4K, and at 4,096 x 3,072 pixels, it's way higher than the sharpest Blu-ray discs. But don't get too excited. Resolution isn't the only benchmark of quality, as a quick glance at these 4K files from YouTube will reveal.