While you can already use XSplit Broadcaster to connect to YouTube Live directly, you may optionally want to use Custom RTMP to connect instead.
This guide shows you how to obtain the Stream Name and Stream URL from YouTube Live as well as set up the Custom RTMP account on XSplit Broadcaster.
Obtaining the RTMP URL and Stream Name:
On the Youtube homepage, click on your user photo then Creator Studio.
On the Creator Studio sidebar, click on Live Streaming.
Alternatively, you can go here directly by going to https://www.youtube.com/live_dashboard.
Scroll down to Encoder Setup, then click the Reveal button.
The Server URL will go to the RTMP URL field on XSplit Broadcaster.
While the Stream name/key will go to the Stream Name field.
Please make sure that you keep your Stream Key private.
Setting up Custom RTMP:
Click on Outputs > Set up a new output > Custom RTMP.
Enter the RTMP URL and Stream Name you obtained above.
The Name field is also required. You can type anything here.
You will be able to select the Custom RTMP profile you created on the Outputs menu to start streaming.