void OnCopyBufferToFile(ILMDVRSource* pSource)
{
BSTR targetFile = SysAllocString(L"C:\\Temp\\CapturedVideo.MPG");
double startPos;
double endPos;
ILMDVRSource_CopyBufferToFile (pSource, targetFile, startPos, endPos);
SysFreeString(targetFile);
}