Even if you can add a 4K video to QuickTime player, it is still an exercise in frustration- content on the display appeared tiny. In fact, Apple has offered 4K playback support on OS X Mavericks, but with limits. When I used QuickTime player, the video is very sharp and some of the text in it can't be seen correctly. I'm on mountain lion 10.8.5 and recently my friend gave me a 4K resolution video. Can I not play a 4K H.264 video on my system?
QT player 7 would not play it fluidly (though I suppose it's normal) and QT player X just shows a black screen. I have a 4K video in an mp4 container (H.264). Well, in this article we focus on how to play 4K video in QuickTime on computer, as there are many users are facing the trouble viewing 4K in QuickTime player. When you got some 4K videos, you may wanna play them on computer, mobile or portable devices.
There are more and more 4K videos that we can access such as from professional 4K camcorders(Panasonic GH4, Sony AX100), famous streaming video hosting sites(YouTube, Vimeo) and others.
