Haven't had a lot of time to try different methods yet, however the only one I did try failed. Basically I exported the 4k video out of Photos on the Mac and then tried to upload it to youtube. It uploaded very quickly so I knew something wasn't right. The end result was a blurry 360p video. Whats the best/easiest way to view my recordings on my TV? Curse you Apple for making the new Apple TV 1080p!!