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It is not suitable to discuss via the forum. It needs more professional support. I suggest that you might need to open a paid support ticket for this. Please contact our paid phone support at MS Support. You will get 1:1 support on that. Please kindly note that your support ticket will be free if it is Microsoft's issue.
Choose Developer Tools -> Windows UWP Development -> Windows10 Universal App Dev -> Graphics and Multimedia Development -> Audio, Video, Camera API