You can configure source and destination names, enable other control protocols, and set a variety of other options. Let’s take a look.

Opening the Configuration dialog

Start by selecting “Configure Router” from the main menu.

General Tab

You’ll see the configuration dialog, with options grouped into three tabs. We’ll start with the General tab (1).

  1. The General tab includes NDI source configuration and overall operation.
  2. Set the size of the virtual router. RouteMaster Lite supports up to 20 sources and destinations, but the full version of RouteMaster can go far beyond this.
  3. Extra IPs is a comma-separated list of IP’s to probe for NDI sources. Normally RouteMaster will detect all available sources automatically but if your network configuration prevents this you can give it a little help by putting the IP in here.
  4. NDI Source Groups lets you restrict discovery to specific groups of sources as set up in NewTek’s NDI Access Manager.

Assigning NDI Sources to Router Inputs

Section 4 above lets you assign a specific NDI sources to each router Input. This is essential for most uses cases, as otherwise input numbers can vary depending on the NDI sources available.

For each router input, select an NDI source from the drop-down list in the right column, and optionally provide a friendly name to replace the usual NDI-generated name. Sometimes it can take a while for NDI sources to be located. If the drop-down list is empty of missing the required source, just try again in a couple of seconds.


  • The Logging Level sets the level of detail stored in the application log. Normally you can leave this set to Error.
  • Start In Run Mode causes the application to automatically start with the server running when this box is checked. Useful once everything is configured and working.
  • If Auto-detect new NDI sources is enabled, any new NDI sources located will be automatically added to the router in the next available slot.

Source Expiry

Expire Sources controls the behaviour when a previously auto-detected NDI source disappears from the network. If this option is disabled (and in earlier versions of the product before this option was introduced) then the input slot remains allocated to the NDI source and is only freed when RouteMaster is restarted.

When enabled, the input slot will automatically become available after NDI source has been missing for the specified time. If the “Switch to Input” option is also enabled, then any outputs using the now-missing source are re-routed to show the specified NDI router input. These options are useful when the NDI sources and their names change dynamically, and the router input slots would otherwise fill with sources that are no longer available.

RouteMaster also now stores the allocation of auto-detected sources over restarts. This means that RouteMaster can safely be stopped and restarted without the source allocations (and associated routing) changing.  You can still force the auto-detection input allocation to be cleared using the  “Reset Detected Sources” command from the Settings menu.


Destination Names

Similar to Source Names, the Destination Names tab allows you to enter “friendly” names for display on any router control panels.

Client Protocols

You can control RouteMaster Lite using the built-in web panel or using BlackMagic VideoHub hardware panels. Each protocol can be enabled or disabled using the checkboxes.

The default ports are usually fine, but can be overridden if necessary. If a client can’t be started due to a conflict with port numbering, you’ll see it shown in red in the Client Info section.