Hello WendyMars56: Without knowing where/how OBS fits into I want to monitor a 3D printer in another room,I would like to have a video feed from this computer controlling the 3D printer to my desktop in my room, it's difficult to know what components you need. But if you are using some combination of OBS Studio and NDI, then you will need the OBS NDI Plugin. In case it helps, here is AI's explanation what the integration accomplishes:
In summary, the NDI Plugin is essential for integrating OBS Studio with the NDI ecosystem, enabling you to bring in NDI sources, send your OBS output as an NDI stream, and even output individual sources as NDI streams with audio. It facilitates seamless video/audio transmission between OBS and other NDI-compatible applications or hardware over an IP network.
If you are new to all this and it seems a bit daunting, my suggestion is to install the NDI Tools, and test/experiment access across your LAN on different computers.
Depending on your setup, what might work and be easier to implement than NDI, is qhobbes suggestion: VDO Ninja. There should be no noticeable lag and it has the added advantage of not requiring a software install.
Anyway, I hope this hasn't confused you even more!
Regards,
Tony N