This code demonstrates how to open a mjpeg stream and display it on a fullscreen texture with OpenTK.

If you have no ip camera available you can use your smartphone with an ip streaming app. To not drain your battery while experimenting it's easy to caputre a short period of the mjpeg stream via vlc

$ vlc -I dummy --run-time=10 http://192.168.0.142:8080/videofeed --sout=file/asf:test-stream.asf vlc://quit

and rebroadcast it on http://localhost:8080 with

$ vlc  -I dummy  -vvv test-stream.asf -L --sout '#standard{access=http,mux=mpjpeg,dst=:8080}'