I'm currently working on a camera app. Everything worked fine, but when I tried to change the constraints of the Vision View the log suddenly printed this error.
[warning]the specified colorspace format is not supported. falling back on libyuv.
I have no Idea where it comes from and what I should change. Below I'll past the relevant code where I set up the camera.
func initializeCameraSession() {
// Set up Values
//1: Create a new AV Session
// , xf , AVCaptureVideoDataOutputSampleBufferDelegate // Get camera devices
let devices = AVCaptureDevice.DiscoverySession(deviceTypes: [.builtInWideAngleCamera], mediaType: AVMediaType.video, position: .front).devices
//2: Select a capture device
avSession.sessionPreset = .low
do {
if let captureDevice = devices.first {
let captureDeviceInput = try AVCaptureDeviceInput(device: captureDevice)
}
avSession.beginConfiguration()
if avSession.canAddInput(captureDeviceInput) {
avSession.addInput(captureDeviceInput)
self.videoDeviceInput = captureDeviceInput
} else {
print("Couldn't add video device input to the session.")
avSession.commitConfiguration()
return
}
avSession.commitConfiguration()
}
} catch {
print(error.localizedDescription)
}
//3: Show output on a preview layer
let captureOutput = AVCaptureVideoDataOutput()
captureOutput.setSampleBufferDelegate(self, queue: DispatchQueue(label: "videoQueue"))
captureOutput.videoSettings = [(kCVPixelBufferPixelFormatTypeKey as String) : NSNumber(value: kCVPixelFormatType_32BGRA )]
avSession.addOutput(captureOutput)
let previewLayer = AVCaptureVideoPreviewLayer(session: avSession)
previewLayer.videoGravity = AVLayerVideoGravity.resizeAspectFill
previewLayer.connection?.videoOrientation = .portrait
previewLayer.frame = visionView.bounds
visionView.layer.addSublayer(previewLayer)
view.bringSubviewToFront(visionView)
visionView.isHidden = true
visionView.alpha = 0.0
avSession.startRunning()
}
}