While you can already use XSplit Gamecaster to connect to Facebook Live directly, you may optionally want to use Custom RTMP to connect instead.
This guide shows you how to obtain the Stream Key and Stream URL from Facebook Live as well as set up the Custom RTMP account on XSplit Gamecaster.
Obtaining the RTMP URL and Stream Key:
On your Facebook profile or page you manage, click on Live Video.
When the Live Video window shows up, click on Connect.
You'll be shown the information you will need to enter when setting up Custom RTMP.
The Stream URL will go to the RTMP URL field on XSplit Gamecaster.
While the Stream Key will go to the Stream Key field.
Please make sure that you keep your Stream Key private.
Setting up Custom RTMP:
Click on the Accounts tab.
Under Live Streaming, click the button and select Custom RTMP.
Enter the RTMP URL and Stream Key you obtained above.
The Stream URL is optional. This can be a link to your Facebook profile or page.
The Custom RTMP service you set will show as configured on the Accounts tab and you will be able to start streaming through the XSplit Gamecaster overlay.