Problem in adding LAV Splitter Source Filter in the graph using directshow.

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I have a problem in adding "LAV Splitter Source" filter in the graph using directshow. If i give mp4 format file as a source file the "LAV Splitter Source" filter was created with 2 output pin(video and audio).
ex:

C#

IGraphBuilder::AddSourceFilter(L"C:\\video.mp4",L"LAV Splitter Source",&pLAVSplitterSource);

But if i give avi file format as a source file the "LAV Splitter Source" filter was created with only 1 output pin(video).
ex:

C#

IGraphBuilder::AddSourceFilter(L"C:\\video.avi",L"LAV Splitter Source",&pLAVSplitterSource);

What i need to do to get both output pin?

Posted 5-Feb-13 19:29pm

J.Surjith Kumar

Updated 5-Feb-13 23:36pm

v4

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J.Surjith Kumar · Accepted Answer · 2013-02-06T02:31:00

I have solved this myself by using the below code rather than using AddSourceFilter function.

C#

hr = CoCreateInstance(CLSID_LAV_SPLITTER_SOURCE, NULL, CLSCTX_INPROC_SERVER,
                        IID_IBaseFilter, (void **)&pLAVSplitterSource);
     if (FAILED(hr))
    {
        MessageBox(hwnd,L"ERROR - Could not create the LAV.",L"Error",0);
    }
    hr = pLAVSplitterSource->QueryInterface(IID_IFileSourceFilter,(void **)&pLAV);
    hr = pLAV->Load(strFilename,NULL);
    hr = pGraph->AddFilter(pLAVSplitterSource,L"LAV");

Now its created in both the formats what i was expected.