[Tom Bottiglieri]

You can access a MJPG stream over HTTP. Basically the way this works is you handle a request for the stream URI, and immediately return the full jpeg including header. You then send a divider string (which you specify in the HTTP header as content type multipart/x-mixed-replace;boundary=<boundary-name>) and repeat the process with a new frame.

You can google around to find some Python+gstreamer implementations. Switching out the gstreamer backend for an OpenCV webcam source is relatively easy.