I took the camera example code I wrote a long time ago for 1.x and ported
it to 0MQ 2.
It provides a nice example of sending data using multiple transports and
accessing 0MQ sockets from multiple threads.
The code can be found here:
Linux only, sorry, I don't want to deal with portable video acquisition.
See the included README for build instructions.
I'll also add a pointer to the 0MQ wiki shortly.