During PlayStation's press conference from E3 2014, Sony Computer Entertainment announced that PS4 users will be able to share their greatest gaming moments on YouTube. Starting this fall YouTube will officially be one of the social options offered when you press the SHARE button on your DualShock 4. After pressing SHARE, you will see the YouTube icon pop up alongside Facebook, Twitter, Twitch, and Ustream, and in just a couple of quick steps, you can go from playing your favorite games to publishing videos on your own YouTube channel. You will also be able to see your friends' shared YouTube videos using the "What's New" feed.
In addition to the integrated sharing functionality, a YouTube app on PS4 will become available (just like on PS3) where you can access your favorite YouTube channels, videos and personalities.