This project is a simple example of how to place webcamera video into the backbuffer of a Unity 4.6 applciation.
It is modified from this example: http://jaymayblog.blogspot.com/2012/08/camera-feed-background-in-unity.html
Please check out the wiki for a tutorial:
(https://github.com/stevehenderson/UnityVideoBackbuffer/wiki/Unity-Video-Webcam-Backbuffer-Tutorial)