I can feed that NDI Source into OBS Studio and stream to YouTube.
I have NDI Tools 4.5 already installed and working with a NDI source on my Windows laptop feeding into NDI Syphon etc on my Mac. With a different source - OBS can now read from NDI sources other than Skype successfully.) (I did have to follow a forum post to install an older version of the libndi.4.dylib file to make the OBS Studio NDI plugin work
This includes the NDI monitor applications on both laptops, OBS Studio with the NDI plugin, NDI Syphon from NewTek, etc. However no other tools can see an NDI Source from I have turned on NDI in the 'Advanced' settings in Skype, and during the call it shows 'Stop NDI(R)' to click and turn it off, giving me confidence Skype thinks its generating an NDI stream. I just installed Skype 8.58.0.93 for the first time on my Mac (Catalinaġ0.15.4 (19E266)).