Ultra HD 4K sets were a dime a dozen at the International CES show this year. From 4K camcorders and video recorders, 4K phones from Apple, to the 300 million or so UHD TV sets expected by IHS to be in use by 2019, it’s clear there’s no question about the future of video entertainment. It’ll be all 4K. But according to Eric Grab, CTO of NeuLion, there’s something missing from the 4K ecosystem today: “Where’s the 4K content? Where’s it coming from? There’s a gap,” he said, speaking to The Online Reporter at CES last week. Not the VoD content – all the major OTT services are now offering libraries of 4K content, and those are growing daily. Even…