Error 0x8004021A

Value: -2147220966 | 0x8004021A | 2147746330

What does it mean ?

VFW_E_NO_COLOR_KEY_SET  
DirectShow: No color key has been set.
Value: 538 | 0x021A | 0b0000001000011010
CDO_E_HTTP_FAILED  
The HTTP request failed. The server response was: %1.
Value: 538 | 0x021A | 0b0000001000011010
IMAPI_E_TRACKNOTOPEN  
An audio track is not open for writing.
Value: 538 | 0x021A | 0b0000001000011010
MPEG2_E_MISSING_SECTIONS  
Value: 538 | 0x021A | 0b0000001000011010

Where does it come from ?

FACILITY_ITF  
COM/OLE Interface management. FACILITY_ITF is designated for user-defined error codes returned from interface methods
Value: 4 | 0x004 | 0b00000100

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