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Baffled by AVCaptureVideoPreviewLayer
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Baffled by AVCaptureVideoPreviewLayer


  • Subject: Baffled by AVCaptureVideoPreviewLayer
  • From: "email@hidden" <email@hidden>
  • Date: Wed, 01 Aug 2012 18:05:16 -0400

I'm having trouble  getting AVCaptureVideoPreviewLayer to work in OSX 10.8, XCode 4.4 . I'm trying to use the NSView mMovieView as the port.

    	@property (nonatomic, strong) IBOutlet NSView               *mMovieView;
	@property (nonatomic, strong) IBOutlet CALayer              *movieLayer;

	movieLayer = [[self mMovieView] layer];
	[movieLayer setBackgroundColor:CGColorGetConstantColor(kCGColorBlack)];
	AVCaptureVideoPreviewLayer *newPreviewLayer = [[AVCaptureVideoPreviewLayer alloc] initWithSession:[self captureSession]];
	[newPreviewLayer setFrame:[movieLayer bounds]];
	[movieLayer addSublayer:newPreviewLayer];

    	DLog(@"captureSession inputs are %@",captureSession.inputs);
    	DLog(@"captureSession outputs are %@",captureSession.outputs);

 	[captureSession startRunning];

	DLog(@"AVCapture Session Started");

At the console, I see:
2012-08-01 17:32:53.919 Roboplasm[15629:303] -[MovieController setupAVCapture] captureSession inputs are (
    "<AVCaptureDeviceInput: 0x10e889390 [FaceTime HD Camera (Built-in)]>",
    "<AVCaptureDeviceInput: 0x101af69b0 [Built-in Input]>"
)
2012-08-01 17:32:53.920 Roboplasm[15629:303] -[MovieController setupAVCapture] captureSession outputs are (
)
2012-08-01 17:33:04.973 Roboplasm[15629:303] __37-[MovieController captureSessionInit]_block_invoke_085 did start running
2012-08-01 17:33:04.974 Roboplasm[15629:303] -[MovieController setupAVCapture] AVCapture Session Started

But no video preview. Any idea what's up.

Thanks,
Joseph Ayers
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