It would be nice to be able to use the NDI virtual input as a different webcam for the video demo feature in Captivate. However, after installing Newtek's NDI tools 4, trying to do a video demo crashes Captivate 2019 every time. Uninstalling NDI tools seems to be the only work-around, unfortunately.
I'm not familiar with Newtek NDI tools but sometimes you can avoid crashes in video demo when you run Adobe Captivate in Admin mode. To do this right-click on the Captivate icon in the Start menu or desktop, navigate to More > Run as an administrator via the context menus.
Thanks for the suggestion, Paul. I had not included in my post that I had already tried to run the executable as an administrator. Unfortunately, that does not work either. The only way to get the Video Demo mode not to crash the software is to uninstall the NDI Tools. Apparently, Captivate will not initiate that module of the software due to some conflict with a driver installed for the NDI Tools to function.