// Get the input/output buffers
    ComPtr<IMFMediaBuffer> outputBuffer;
    ComPtr<IMFMediaBuffer> inputBuffer;
    CHK(inputSample->GetBufferByIndex(0, &inputBuffer));
    CHK(outputSample->GetBufferByIndex(0, &outputBuffer));

    // Copy sample time, duration, attributes
    long long time = 0;
    long long duration = 0;
    (void)inputSample->GetSampleTime(&time);
    (void)inputSample->GetSampleDuration(&duration);
    CHK(outputSample->SetSampleTime(time));
    CHK(outputSample->SetSampleDuration(duration));
    CHK(inputSample->CopyAllItems(outputSample.Get()));

    // Set output buffer length (work around SinkWriter bug)
    unsigned long length = 0;
    CHK(outputBuffer->GetMaxLength(&length));
    CHK(outputBuffer->SetCurrentLength(length));

	unsigned long cbInputData = 0;
	unsigned long cbOutputData = 0;
	byte* pInputData;
	byte* pOutputData;

	CHK(inputBuffer->Lock(&pInputData, NULL, &cbInputData));
	CHK(outputBuffer->Lock(&pOutputData, NULL, &cbOutputData));

	unsigned long x = 0;

	while (x < cbInputData)
	{
		(*(pOutputData + x++)) = 255;
		(*(pOutputData + x++)) = 0;
		(*(pOutputData + x++)) = 0;
		(*(pOutputData + x++)) = 255;

		//Trace("B: %i", (*(pInputData + x++)));
		//Trace("\tG: %i", (*(pInputData + x++)));
		//Trace("\tR: %i", (*(pInputData + x++)));
		//Trace("\tA: %i\n", (*(pInputData + x++)));
	}