Live video streaming

Hi.
I’m making client-server game on Unity, and now I need to stream players screens to server app.
I’m not using UNet because server is written on C++.
What is the best way to create video stream from unity game? Is there any way to create video stream?

Local Live Streaming for multiple clients is one of our plugin features, please check it out.
It also supports auto network discovery in local network.
FM Exhibition Tool Pack

PS: All Source Code written in C#, example code provided & free to modify for specific case.