Error 0x400D2F03

Value: 1074605827 | 0x400D2F03 | 1074605827

What does it mean ?

NS_I_EXISTING_PACKETIZER  
There is already an existing packetizer plugin for the stream.
Value: 12035 | 0x2F03 | 0b0010111100000011

Where does it come from ?

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

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