I have just finished a project involving live steaming of AES encrypted audio data, and I have written a lot of programs that process video in real time so I can easily accomplish the task that you are looking for. My budget for the project is considerably more than your requested budget, but If you want it done right, I'm the one to do. Let me know if you would like to discuss further.
Thank You,
Chris Howell
etherVision, inc.