How do other people broadcast live x1 gameplay on youtube? Are they feeding the hdmi out from the x1 into something else and then broadcasting from there?
Yes. You use one of the various HDMI capture devices that you can buy, which either feed the data to a PC or stream it for you. The problem is that capturing HDMI feeds
does not work with HDCP, which means you cannot use this method with the PS4. Well, to be fair, that's only a half-truth. If you use a HDMI-to-DVI connector along with a DVI+Optical-to-HDMI converter, you
can do it as that will strip out the HDCP protection from the PS4's output.
Personally, I'm not a huge fan of the built-in streaming on the PS4. I mean... it works great, but I just don't like giving up all that screen real estate. That's the one advantage of using a PC to do it for you... the PC handles all the overlays and resizing, but your TV's output is still normal.