The Free vMix Desktop Capture application is a separate program that can be used to capture any other Windows PC running on the same local network as vMix. Simply download and run it on the PC you wish to capture into vMix.
The application uses either NDI or OMT to send high quality, low latency video and audio to vMix. For more information, see the Desktop Capture section of our Help Guide.
NDI Desktop Capture (23.0.0.4)
For Windows 
OMT Desktop Capture
For Windows