Error 0xC00D4A40

Value: -1072870848 | 0xC00D4A40 | 3222096448

What does it mean ?

MF_E_ASF_FILESINK_BITRATE_UNKNOWN  
The ASF file sink could not reserve AVIO because the bitrate is unknown.
Value: 19008 | 0x4A40 | 0b0100101001000000

Where does it come from ?

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

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