Resiliency scenario A: Supporting NMOS patching
With this setup, the NMOS controller can send SDP content that provides patching instructions to Elemental Live. For example, in a curling match, it can send a patch that switches the source from the camera on the curling rink to the camera in the studio.
To support NMOS patching, you must attach the same Elemental Live receiver group to two Elemental Live inputs. Each pair of Elemental Live receiver group inputs is a patching pair. You can set up more than one patching pair in the Elemental Live event or Conductor Live profile.
To create each patching pair, follow this procedure.
-
**newCreate one receiver group for the patching pair. To create a receiver group, see Create the receiver group.
-
In the Elemental Live event or Conductor Live profile that you are creating, create one SMPTE 2110 NMOS input (input A), as described in Create a receiver group input. In the Advanced section, set NMOS patching pair to ON.
-
After input A, create another input (input B) and select the same source item from the dropdown. In this way, you attach the same receiver group to both inputs. Set NMOS patching pair to ON.
Result of this setup
Elemental Live sets up a patching pair consisting of the first patching-pair-enabled input (input A in this example) and the next input in the list that is patching-pair-enabled (input B in this example). Whenever Elemental Live is ingesting this receiver group content, one of the inputs in the patching pair is active and the other input is in standby.

The two patching-pair inputs must be next to each other. If necessary, use the up and down arrows on the far right of the web interface to move an input up or down the list.
How patching works at runtime
The NMOS controller sends a patching request by sending new SDP content for the receiver group that is attached to these two inputs. When Elemental Live receives the request, it sets up the standby input (input B, for example) with the new content, then switches from the active input (input A) to the standby input (input B). Input B becomes the active input. The visual impact during the patch is controlled by the setting of the Use make-before-break field.