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Full screen AvCapture session in iphone 4s

I am developing an AvCapture session to add camera overlays on the camera screen. I added AvCaptureVidePreview layer as

AvCaptureVideoPreviewLayer*layer = [[AvCaptureVideoPreviewLayer alloc] iniWithSession:session];
layer.frame = self.view.layer.bounds;

but the camera preview is not full screen in case of iPhone 4S. It works great on iPhone 5.

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CGRect bounds=view.layer.bounds;
layer.videoGravity = AVLayerVideoGravityResizeAspectFill;
layer.bounds=bounds;
layer.position=CGPointMake(CGRectGetMidX(bounds), CGRectGetMidY(bounds));


maybe it can help you ..

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