Looking back, the original idea behind YouTube seems almost quaint. The mythic founding story goes like this: in January of 2005, two PayPal employees, Chad Hurley and Steve Chen, were at a party. People were taking photos and videos on their digital cameras. Sharing photos was easy, sharing video was anything but. “People have different video types, video codecs they have to download, video software,” Chen said on Charlie Rose in 2006. He and Hurley had a sense that as digital cameras…