Please keep us happy.
@yosp: We'd like to keep gamers happy and are considering every possibility regarding PS4's gameplay capture. We'll update you as soon as ready.
The rumor is that, like the PS3, the video signal for the PS4 will always be protected via HDCP, meaning gameplay and audio can't be captured.
This has nothing to do with youtube
Basically no third party capturing. Has zero to do with youtube/share button/PS4 built in features