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Wrong NDI signal appearing in LDE when using Avid Media Composer

If you are seeing the wrong NDI signal appear in Louper Desktop Encoder (LDE) when using Avid Media Composer, this is usually caused by duplicate NDI stream names across multiple machines on your network.

Why this happens​

In Avid Media Composer: Right-click HW/SW button → NDI → Configure. There is a setting called Stream Name. If two machines on the same network use the same Stream Name, they will appear as the same NDI source on the network.

For example: Computer 1 and Computer 2 are both set to the same Stream Name in Avid, for example Avid NDI. In LDE (running on Computer 1), everything works as expected at first. When Computer 1’s HW/SW NDI output is ON in Avid, you see the correct signal in LDE. If you then turn Computer 1’s HW/SW NDI output OFF and turn Computer 2’s HW/SW NDI output ON, LDE will automatically switch to showing Computer 2’s signal, even though you did not make any changes in LDE.

This happens because both signals use the same NDI Stream Name, so LDE treats them as the same source.

Fix​

Give each machine a unique Stream Name in Avid Media Composer NDI Settings:

  1. In Avid Media Composer, right-click the HW/SW button → NDI → Configure
  2. Change the Stream Name field to something unique, for example “editbay1”
  3. Click OK
  4. Restart Avid Media Composer and LDE
  5. In LDE, double-click on your NDI source (or add a new NDI source if you do not have one), and select your NDI signal from the dropdown.

The signal from Avid Media Composer from each machine appears as a separate, uniquely named NDI source in LDE. LDE will no longer switch between NDI signals from different machines automatically.

Optional: Prevent this at the network level​

As an additional safeguard, you can limit NDI visibility so machines on the same network cannot see each other’s signals. This ensures each machine only sees its own NDI output and even if Stream Names are duplicated, signals cannot conflict. See “Managing NDI signal visibility in your network” for instructions on how to configure this.