Is it possible to use this library with a wireless webcam? If so, any help would be greatly appreciated. If not, can anyone suggest a library for Processing that may help me.
It might be possible, depending on whether gstreamer can access the camera over http or not. See for instance the souphttpsrc plugin:
If you can successfully run a capture pipeline from the command line (the third launch example is specifically about IP camera), then it might be possible to call the pipeline from GSVideo.