Error 0x80040251

Value: -2147220911 | 0x80040251 | 2147746385

What does it mean ?

VFW_E_MEDIA_TIME_NOT_SET  
DirectShow: No media time stamp was set for this sample.
Value: 593 | 0x0251 | 0b0000001001010001

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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