Error 0xC00D1B64

Value: -1072882844 | 0xC00D1B64 | 3222084452

What does it mean ?

NS_E_VIDEODEVICE_BUSY  
It is not possible to open the specified video capture device because it is currently in use.
Value: 7012 | 0x1B64 | 0b0001101101100100

Where does it come from ?

FACILITY_MEDIASERVER  
Windows Media Server
Value: 13 | 0x00D | 0b00001101

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