NDI Troubleshooting

Advanced NDI Troubleshooting on Mac

When Video Pencil display a warning triangle

This NDI connection problem seems to emerge when a Mac sends back a 169.254.* IP address over USB, which appears to be some kind of proxy/ad-hoc network port that NDI cannot use.

This is when the app shows a warning triangle, as it can see that there is an NDI server but it does not receive any video frames after connecting.

Figuring it out

About this Mac → System Report → Network has some information

Why does mDNSResponder returns the wrong IP Address? (

my forum question⁠

)

Learn more about this with man mDNSResponder

*.local relates to

Multicast DNS⁠

(mDNS)

Get a log with sudo killall -USR1 mDNSResponder and then look at the Console app, filtering on mDNS (

https://apple.stackexchange.com/a/257767⁠

)

What can I deduce with dig?

How does

UDP⁠

work?

Is NDI Working in general?

You can check whether NDI is working in general by downloading the

free NDI Tools⁠

available from NewTek.

iPad apps for NDI are also available - search NDI in the App Store.

NDI Advanced SDK reference

⁠

NDI Advanced SDK.pdf

1.4 MB

⁠

Video Pencil doesn’t use the Advanced SDK

Advanced NDI Troubleshooting on Windows

If you are using OBS, is it allowed network access through Windows Firewall?

On your router, are ports 5960 to 5969 (TCP/UDP) blocked between your devices?

For more specific assistance, try using ChatGPT.

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