Jorge has a 4K SmartTV, but when he streams YouTube on it, it's not in 4K. What gives? Leo says to make sure the YouTube app on the TV is capable of streaming in 4K. It's likely the app isn't 4K capable. What Leo recommends is to use the Roku 4K streaming device. Let it do the streaming. That way, the 4K processing will be handled by the Roku device. Also, YouTube TV charges $20 more a month for 4K streaming. So if he doesn't have that subscription, he won't be streaming in 4K.