联接ffdshow Video Decoder失败

连接ffdshow Video Decoder失败
一直执行添加Filter的操作都是成功的，但不知道为什么到了添加ffdshow Video Decoder时就出错了，即添加不成功！希望高手帮忙解决下！

C/C++ code

//添加Capture Filter        hr = AddFilterByName(mGraph,CLSID_VideoInputDeviceCategory,wt,L"USB 视频设备",&pCap);        if (FAILED(hr))        {            AfxMessageBox("Can not add Capture Filter!");            return false;        }        //添加Infinite Pin Tee Filter        IBaseFilter *pInfinitePinTee;        hr = AddFilterByName(mGraph,CLSID_LegacyAmFilterCategory,L"Infinite Pin Tee Filter",L"Infinite Pin Tee Filter",&pInfinitePinTee);        if (FAILED(hr))        {            AfxMessageBox("Can not add Infinite Pin Tee Filter!");            return false;        }        //连接Capture Filter和Infinite Pin Tee Filter        //获取Capture Filter的捕获引脚        IPin *pCaptureOut = NULL;        pCaptureOut = GetOutPin(pCap,0);        if (FAILED(hr))        {            AfxMessageBox("Can not get Capture Filter capture Output pin!");            return false;        }        hr = ConnectFilters(mGraph,pCaptureOut,pInfinitePinTee);        if (FAILED(hr))        {            AfxMessageBox("Can not connect Capture Filter with Infinite Pin Tee Filter!");            return false;        }        //添加ffdshow Video Decoder Filter        IBaseFilter *pffdshowVdeoDecoder;        hr = AddFilterByName(mGraph,CLSID_LegacyAmFilterCategory,L"ffdshow Video Decoder",L"ffdshow Video Decoder",&pffdshowVdeoDecoder);        if (FAILED(hr))        {            AfxMessageBox("Can not add ffdshow Video Decoder Filter!");            return false;        }

[解决办法]
换成这样定义试试：
EXTERN_GUID(CLSID_FFDshowDecoder, { 0x04FE9017, 0xF873, 0x410E, 0x87, 0x1E, 0xAB, 0x91, 0x66, 0x1A, 0x4E, 0xF7);
另外，你贴出的地址里有答案连接：
http://forum.doom9.org/showthread.php?p=1019696#post1019696
EDIT : never mind, I found why. This is because visual studio (or my executable) is not in the supported applications inside FFDShow configuration 
如果换了定义还是添加不成功，试着在FFDShow的配置里把使用的应用程序范围更改下。

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