Estou tentando codificar o ID3D11Texture2D para mp4 usando o MediaFoundation. Abaixo está o meu código atual.

Inicializando o Sink Writer

private int InitializeSinkWriter(String outputFile, int videoWidth, int videoHeight)
    {
        IMFMediaType mediaTypeIn = null;
        IMFMediaType mediaTypeOut = null;
        IMFAttributes attributes = null;

        int hr = 0;

        if (Succeeded(hr)) hr = (int)MFExtern.MFCreateAttributes(out attributes, 1);
        if (Succeeded(hr)) hr = (int)attributes.SetUINT32(MFAttributesClsid.MF_READWRITE_ENABLE_HARDWARE_TRANSFORMS, 1);            
        if (Succeeded(hr)) hr = (int)attributes.SetUINT32(MFAttributesClsid.MF_LOW_LATENCY, 1);

        // Create the sink writer 
        if (Succeeded(hr)) hr = (int)MFExtern.MFCreateSinkWriterFromURL(outputFile, null, attributes, out sinkWriter);

        // Create the output type
        if (Succeeded(hr)) hr = (int)MFExtern.MFCreateMediaType(out mediaTypeOut);
        if (Succeeded(hr)) hr = (int)mediaTypeOut.SetGUID(MFAttributesClsid.MF_MT_MAJOR_TYPE, MFMediaType.Video);
        if (Succeeded(hr)) hr = (int)mediaTypeOut.SetGUID(MFAttributesClsid.MF_TRANSCODE_CONTAINERTYPE, MFTranscodeContainerType.MPEG4);
        if (Succeeded(hr)) hr = (int)mediaTypeOut.SetGUID(MFAttributesClsid.MF_MT_SUBTYPE, MFMediaType.H264);
        if (Succeeded(hr)) hr = (int)mediaTypeOut.SetUINT32(MFAttributesClsid.MF_MT_AVG_BITRATE, videoBitRate);
        if (Succeeded(hr)) hr = (int)mediaTypeOut.SetUINT32(MFAttributesClsid.MF_MT_INTERLACE_MODE, (int)MFVideoInterlaceMode.Progressive);            

        if (Succeeded(hr)) hr = (int)MFExtern.MFSetAttributeSize(mediaTypeOut, MFAttributesClsid.MF_MT_FRAME_SIZE, videoWidth, videoHeight);
        if (Succeeded(hr)) hr = (int)MFExtern.MFSetAttributeRatio(mediaTypeOut, MFAttributesClsid.MF_MT_FRAME_RATE, VIDEO_FPS, 1);
        if (Succeeded(hr)) hr = (int)MFExtern.MFSetAttributeRatio(mediaTypeOut, MFAttributesClsid.MF_MT_PIXEL_ASPECT_RATIO, 1, 1);
        if (Succeeded(hr)) hr = (int)sinkWriter.AddStream(mediaTypeOut, out streamIndex);



        // Create the input type 
        if (Succeeded(hr)) hr = (int)MFExtern.MFCreateMediaType(out mediaTypeIn);
        if (Succeeded(hr)) hr = (int)mediaTypeIn.SetGUID(MFAttributesClsid.MF_MT_MAJOR_TYPE, MFMediaType.Video);
        if (Succeeded(hr)) hr = (int)mediaTypeIn.SetGUID(MFAttributesClsid.MF_MT_SUBTYPE, MFMediaType.ARGB32);
        if (Succeeded(hr)) hr = (int)mediaTypeIn.SetUINT32(MFAttributesClsid.MF_SA_D3D11_AWARE, 1);
        if (Succeeded(hr)) hr = (int)mediaTypeIn.SetUINT32(MFAttributesClsid.MF_MT_INTERLACE_MODE, (int)MFVideoInterlaceMode.Progressive);
        if (Succeeded(hr)) hr = (int)MFExtern.MFSetAttributeSize(mediaTypeIn, MFAttributesClsid.MF_MT_FRAME_SIZE, videoWidth, videoHeight);
        if (Succeeded(hr)) hr = (int)MFExtern.MFSetAttributeRatio(mediaTypeIn, MFAttributesClsid.MF_MT_FRAME_RATE, VIDEO_FPS, 1);
        if (Succeeded(hr)) hr = (int)MFExtern.MFSetAttributeRatio(mediaTypeIn, MFAttributesClsid.MF_MT_PIXEL_ASPECT_RATIO, 1, 1);
        if (Succeeded(hr)) hr = (int)sinkWriter.SetInputMediaType(streamIndex, mediaTypeIn, null);


        // Start accepting data
        if (Succeeded(hr)) hr = (int)sinkWriter.BeginWriting();


        COMBase.SafeRelease(mediaTypeOut);
        COMBase.SafeRelease(mediaTypeIn);

        return hr;
    }

Quadro de escrita

 int hr = 0;
        IMFSample sample = null;
        IMFMediaBuffer buffer = null;
        IMF2DBuffer p2Dbuffer = null;
        object texNativeObject = Marshal.GetObjectForIUnknown(surface.NativePointer);

        if (Succeeded(hr)) hr = (int)MFExtern.MFCreateDXGISurfaceBuffer(new Guid("6f15aaf2-d208-4e89-9ab4-489535d34f9c"), texNativeObject, 0, false, out p2Dbuffer);

        buffer = MFVideoEncoderST.ReinterpretCast<IMF2DBuffer,IMFMediaBuffer>(p2Dbuffer);
        int length=0;
        if (Succeeded(hr)) hr = (int)p2Dbuffer.GetContiguousLength(out length);
        if (Succeeded(hr)) hr = (int)buffer.SetCurrentLength(length);


        if (Succeeded(hr)) hr = (int)MFExtern.MFCreateVideoSampleFromSurface(null, out sample);

        if (Succeeded(hr)) hr = (int)sample.AddBuffer(buffer);
        if (Succeeded(hr)) hr = (int)sample.SetSampleTime(prevRecordingDuration);
        if (Succeeded(hr)) hr = (int)sample.SetSampleDuration((recordDuration - prevRecordingDuration));

        if (Succeeded(hr)) hr = (int)sinkWriter.WriteSample(streamIndex, sample);


        COMBase.SafeRelease(sample);
        COMBase.SafeRelease(buffer);

Estou usando o MFTRACE. Estou recebendo o erro abaixo.

    02:48:04.99463 CMFSinkWriterDetours::WriteSample @024BEA18 Stream Index 0x0, Sample @17CEACE0, Time 571ms, Duration 16ms, Buffers 1, Size 4196352B,2088,2008 02:48:04.99465 CMFSinkWriterDetours::WriteSample @024BEA18 failed hr=0x887A0005 (null)2088,2008 
02:48:05.01090 CMFSinkWriterDetours::WriteSample @024BEA18 Stream Index 0x0, Sample @17CE9FC0, Time 587ms, Duration 17ms, Buffers 1, Size 4196352B,2088,2008 02:48:05.01091 CMFSinkWriterDetours::WriteSample @024BEA18 failed hr=0x887A0005 (null)2088,2008 
02:48:05.02712 CMFSinkWriterDetours::WriteSample @024BEA18 Stream Index 0x0, Sample @17CEACE0, Time 604ms, Duration 16ms, Buffers 1, Size 4196352B,2088,2008 02:48:05.02713 CMFSinkWriterDetours::WriteSample @024BEA18 failed hr=0x887A0005 (null)

Alguém pode me dizer o que há de errado com o meu código? Só posso produzir 0 bytes de arquivo mp4.