Thanks but I would like to something done in VC+ +, here is a part of my project:
The problem in this code, and when I try to connect the pin of the mux to sink, an error occurs!!
// initialize COM library
   hr = CoInitialize(NULL);
   if(FAILED(hr))
   {
	   return hr;
   }
    // Create the filter graph
    hr = CoCreateInstance (CLSID_FilterGraph, NULL, CLSCTX_INPROC,
                           IID_IGraphBuilder, (void **) &g_pGraph);
    if (FAILED(hr))
        return hr;
    // Create the capture graph builder
    hr = CoCreateInstance (CLSID_CaptureGraphBuilder2 , NULL, CLSCTX_INPROC,
                           IID_ICaptureGraphBuilder2, (void **) &g_pCapture);
    if (FAILED(hr))
        return hr;
    
    // Obtain interfaces for media control and Video Window
    hr = g_pGraph->QueryInterface(IID_IMediaControl,(LPVOID *) &g_pMC);
    if (FAILED(hr))
        return hr;
    hr = g_pGraph->QueryInterface(IID_IVideoWindow, (LPVOID *) &g_pVW);
    if (FAILED(hr))
        return hr;
    hr = g_pGraph->QueryInterface(IID_IMediaEvent, (LPVOID *) &g_pME);
    if (FAILED(hr))
        return hr;
	
   
	//hr = CoCreateInstance(CLSID_LMNetMux, 0, CLSCTX_INPROC_SERVER, 
	//IID_ILMNetMux,(void**)&Mux); 
	//pMux =Mux;
	//pLNDp = pMux;
//g_pGraph->QueryInterface(IID_ILMNetMux, (void**) &Mux);
	
//	hr = g_pGraph->AddFilter(pLNDp, L"LMNetMux"); 
//___________________________________
	hr = CoCreateInstance(CLSID_LMNetSnk, 0, CLSCTX_INPROC_SERVER, 
	IID_ILMNetSnk,(void**)&Sink); 
if (FAILED(hr))
        return hr;
	pLNSk =Sink;
	hr = g_pGraph->AddFilter(pLNSk, L"LMNetSnk"); 
//=============Conects==============
HRESULT Conectamux()
{
	HRESULT hr;
	// Conectar LMNetMux 
	IPin * pOut = GetOutPin( pSrcFilter, 0 );// ponteiro Video Capture
	IPin * pIn = GetInPin( iLmn, 0 );// ponteiro LMNetMux
	hr = g_pGraph->Connect( pOut, pIn);// conecta, os pinos
return hr;
}
HRESULT ConectaSink()
{
HRESULT hr;
	// Conectar LMNetSnk 
	IPin *pOut = GetOutPin(iLmn, 0 );// ponteiro LMNetMux
	IPin * pIn = GetInPin( pLNSk, 0 );// ponteiro LMNetSnk
	hr = g_pGraph->Connect( pOut, pIn);// conecta, os pinos
return hr;
}