Open Broadcaster Software Studio - MCT-master/portal GitHub Wiki
OBS Studio is a free and cross-platform video streaming solution.
With the plug-in OBS-VirtualCam, it is possible to send the output of OBS as a webcam source to for example Zoom.
With the OBS-NDI integration, it is possible to have OBS as a source to an NDI device.
In this blogpost, "How to stream content from the portal", you can find a guide to using OBS in the context of the portal.