Video capture code does not work on iphone 4 -

I captured the video in the iPhone 3GS using UiImagePickerController, but the video camera on the same app iPhone 4 is not connected , It is also working on iPhone 3GS (OS4).

The following is the code that I used to attach the video camera.

  UIImagePickerController * imagePicker = [[UIImagePickerController alloc] in this]; ImagePicker.mediaTypes = [Object with NSArray array: (NSString *) kUTTypeMovie]; ImagePicker.sourceType = UIImagePickerControllerSourceTypeCamera; ImagePicker.delegate = self; [Self-Present Model View Controller: Animated Picture Picture: Yes]; [Image publication];    
 
 
 You can use your  UIImagePickerControllerCameraDevice  to either  UIImagePickerControllerCameraDeviceRear <  or  UIImagePickerControllerCameraDeviceFront  In addition, 
 
  UIImagePickerControllerCameraCaptureMode  UIImagePickerControllerCameraCaptureModeVideo    / P>