Error 0x8004029C

Value: -2147220836 | 0x8004029C | 2147746460

What does it mean ?

VFW_E_DVD_NONBLOCKING  
Nonblocking APIs are enabled and the nav cannot perform the operation at this time (IDVDControl) or partially incomplete information may be returned (DVDInfo).%0
Value: 668 | 0x029C | 0b0000001010011100

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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