Capture for Kinect Camera

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Thanks, that I have done, now I want to save the images I have listened to from to video using the video writer class,

VideoCapture cap(0); // open the default camera

However, I don't want to use the default camera (webcam), instead the kinect camera. I have tried -1, but still won't work. So, If someone has opened a capture using KINECT camera, that would be great if they shared with me how they did it. many thanks