Network Switch
Use this guide if you have both PCs plugged into a network switch.
⚠️ INSTALL THE FOLLOWING ON THE GAMING PC ⚠️
1) Download/Install OBS (Version 31.1.0 Only)
2) Download/Install OBS DistroAV 6.1.1 Plugin
3) Download/Install NDI Runtime 6
4) OBS Settings
Video Settings:
Base (Canvas) & Output (Scaled) Resolution:
150x150
for Color or300x300
for AI

Fractional FPS: At least
240/1
Advanced Settings:
Color Format:
BGRA (8-bit)
Game Capture:
Select game capture and your game.
Center it to the canvas by pressing Game Capture in Sources and then pressing
CTRL + D
.The end result should look like the following:

As you can see the window shows the center of the screen! if the entire image is constricted to the box, you may did not center the window and should remove the current capture source and redo.
NDI Output Settings:
On the toolbar, go to
Tools
.Select
NDI Output Settings
.Click the checkbox next to
Main Output
.
Finally, Right click on the preview and select the option to disable the preview.
Fixing OBS/NDI when it's stuck looking for sources after a restart:
1️⃣ Check Network Connection
Make sure both PCs are on the same network (wired preferred).
Both PCs should be on Ethernet. If one is on Wi-Fi, this could cause issues.
Open Command Prompt (Win + R → type
cmd
→ Enter)Try pinging the other PC:
ping <OTHER_PC_IP>
Example:
ping 192.168.1.100
If this fails, your PCs aren’t communicating over the network.
3️⃣ Check Firewall (Most Common Issue)
Disable Windows Firewall (temporarily for testing)
On both PCs:
Press Win + R, type
firewall.cpl
, press Enter.Click Turn Windows Defender Firewall on or off.
Select Turn off Windows Defender Firewall for both Public & Private networks.
Try refreshing NDI sources in OBS.
If turning off the firewall fixes it, then re-enable it and manually allow OBS/NDI on the Gaming PC:
Go back to firewall.cpl.
Click Allow an app or feature through Windows Defender Firewall.
Find and check:
obs64.exe
Disable Windows Firewall (temporarily for testing)
If turning off the firewall fixes it, then re-enable it and manually allow Moonlight.exe on the Script PC:
Go back to firewall.cpl.
Click Allow an app or feature through Windows Defender Firewall.
Find and check:
Moonlight.exe
4️⃣ Check if DistroAV Plugin is Enabled
Open OBS → Tools → DistroAV NDI Settings.
Ensure "Main Output" checkbox is checked.
8️⃣ Restart Everything in This Order
Turn off both PCs completely.
Power cycle the router/modem and switch (unplug for 10 seconds, then plug back in).
Start the sending PC first.
Start the receiving PC.
Open OBS on Gaming PC.
After trying these steps, your NDI source should show up. If it’s still not working, let us know!
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