[Placio74]

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To provide support for Real Video, following DLL must be in ConvertXtoDVD.exe path (C: \Program Files\vso\ConvertXtoDVD):

All format: pncrt.dll
Real video V8: drv23260.dll
Real video V9: drv33260.dll
Real video V10: drv43260.dll

these Dll comes with Real Player, that can be downloaded from Real Network.
(http://www.real.com), or you can get them from Here
And make sure you are using the latest version of ConvertXtoDVD.