Grundsätzlich lese ich das,http://www.gdcl.co.uk/2011/June/UnregisteredFilters.htm.

Hier erfahren Sie, wie Sie Filter verwenden, ohne sie zu registrieren. Es gibt zwei Methoden: new und using a private CoCreateInstance. Ich versuche, die CoCreateInstance-Methode zu verwenden.

In dem Beispiel von der Site ist der Code wie folgt aufgeführt:

IUnknownPtr pUnk;
HRESULT hr = CreateObjectFromPath(TEXT("c:\\path\\to\\myfilter.dll"), IID_MyFilter, &pUnk);
if (SUCCEEDED(hr))
{
    IBaseFilterPtr pFilter = pUnk;
    pGraph->AddFilter(pFilter, L"Private Filter");
    pGraph->RenderFile(pMediaClip, NULL);
}

Mein Code wie folgt,

IUnknownPtr pUnk;
HRESULT hr = CreateObjectFromPath(TEXT("c:\\filters\\mp4demux.dll"), IID_BaseFilter, &pUnk);
if (SUCCEEDED(hr))
{
  //add functionality
}

Ich vermute, dass IID_BaseFilter das ist, was ich verwenden soll, was ich für andere Filter verwende. Ich erhalte jedoch die Fehlermeldung "ClassFactory kann die angeforderte Klasse nicht bereitstellen".

Vermisse ich hier etwas? Jede Hilfe wäre sehr dankbar. Danke im Voraus!

EDIT: Code

IBaseFilter *pSrc = NULL, *pSrc2 = NULL, *pWaveDest = NULL, *pWriter = NULL;
IFileSinkFilter *pSink= NULL;
IGraphBuilder *pGraph;
ICaptureGraphBuilder2 *pBuild;
IMediaControl *pControl = NULL;
// This example omits error handling.

hr = CoCreateInstance(CLSID_CaptureGraphBuilder2, NULL, CLSCTX_INPROC_SERVER,
    IID_ICaptureGraphBuilder2, (void**)&pBuild);

hr = CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER, IID_IGraphBuilder, (void**)&pGraph);
//Initialize the Capture Graph Builder
hr = pBuild->SetFiltergraph(pGraph);

// Not shown: Use the System Device Enumerator to create the 
// audio capture filter.
hr = pMoniker->BindToObject(0, 0, IID_IBaseFilter, (void**)&pSrc);
hr = pGraph->AddFilter(pSrc, L"VideooCap");

hr = pMoniker2->BindToObject(0, 0, IID_IBaseFilter, (void**)&pSrc2);
hr = pGraph->AddFilter(pSrc2, L"AudioCap");

IBaseFilter *pMux;
//IFileSinkFilter *pSink;
hr = pBuild->SetOutputFileName(
    &MEDIASUBTYPE_Avi,  // Specifies AVI for the target file.
    L"C:\\wav\\Example2.mp4", // File name.
    &pMux,              // Receives a pointer to the mux.
    NULL);              // (Optional) Receives a pointer to the file sink.

IUnknownPtr pUnk;
//static CLSID const clsid = { 0x025BE2E4, 0x1787, 0x4DA4, { 0xA5,0x85,0xC5,0xB2,0xB9,0xEE,0xB5,0x7C } };

static CLSID const clsid = { 0x5FD85181, 0xE542, 0x4e52, { 0x8D,0x9D,0x5D,0x61,0x3C,0x30,0x13,0x1B } };
//5FD85181-E542-4e52-8D9D5D613C30131B
HRESULT hr = CreateObjectFromPath(TEXT("c:\\filters\\mp4mux.dll"), clsid, &pUnk);
if (SUCCEEDED(hr))
{
    IBaseFilterPtr pFilter = pUnk;
    HRESULT hr = pGraph->AddFilter(pFilter, L"Private Filter");
}

hr = pBuild->RenderStream(
    NULL,//NULL,//&PIN_CATEGORY_CAPTURE, // Pin category.
    NULL,//&MEDIATYPE_Interleaved,//NULL,//&MEDIATYPE_Audio,      // Media type.
    pSrc,                  // Capture filter.
    NULL,                  // Intermediate filter (optional).
    pMux);                 // Mux or file sink filter.

hr = pBuild->RenderStream(
    NULL,//NULL,//&PIN_CATEGORY_CAPTURE, // Pin category.
    NULL,//&MEDIATYPE_Interleaved,//NULL,//&MEDIATYPE_Audio,      // Media type.
    pSrc2,                  // Capture filter.
    NULL,                  // Intermediate filter (optional).
    pMux);                 // Mux or file sink filter.

    IMediaControl *pMC = NULL;
    hr = pGraph->QueryInterface(IID_IMediaControl, (void **)&pMC);
    printf("START");  
    hr = pMC->Run();
    Sleep(4000);
      hr = pMC->Stop();
    printf("END");  
CoUninitialize();
    }
}