Question / Help OBS for Mac receives NDI signal from windows laptop but not iOS devices.


New Member

I'm using latest OBS on iMac 5K, 2019 at my church.

When I added NDI input, it shows NDI signal from laptop running windows 10. Both NDI scan converter and PPT NDI worked well.
But when I choose NDI signals from iPad or iPhone using NDI HX Camera/Capture apps, it only received audio not video.
My MacBook receives both video and audio well with same settings.

How can I fix this problem?
Both computers are running on Catalina 10.15.4 and using latest OBS and
installed NDI tools, NDI runtime, OBS NDI, NDI HX drivers.


New Member
I've found that this is not NDI problem.

Actually, OBS doesn't show some contents.
When I add something, it should show red square area.
But OBS only show just one red point.

Same version works well on another mac.

Is this bug?


  • screenshot 2020-05-03 PM 1.36.09 copy.png
    screenshot 2020-05-03 PM 1.36.09 copy.png
    186.4 KB · Views: 67


Active Member
I find that sometimes new sources don't appear properly until I toggle on the low bandwidth option, and then toggle it off again.

If OBS shows a source like that, it means it can't add it for some reason-- either the format is unsupported, the volume the source is on can't be reached, or you need to manually resize the source to fit your canvas.