Capturing frame using AVCaptureVideoDataOutPut
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 hello friends.
 
 I am a korean student. 

 and I am making argument reality iPhone app with Xcode 4.3

 so I need to capture frame from camera.

 then I searched "how to capture from camera" 

 and I finally found that using AVCaptureVideoDataOutPut is only possible to capture frame from camera..

 but I don't know how to use AVCaptureVideoDataOutPut to capture frame from camera.

 also I have not found exactly source code using AVCaptureVideoDataOutPut.

 so I can't make argument reality app anymore.

 so I really want to see or get source code which is code 

 using AVCaptureVideoDataOutPut to capture frame from camera in IOS 5.x not IOS 4.x 

 I am really fucked in my project. 

 please help me. 
