IltmmConvert::get_SourceVideoType Example for C
char szVideoType[256];
BSTR bstr;
IltmmConvert__get_SourceVideoType(g_convert, &bstr);
strcpy(szVideoType, "Source video type GUID is ");
strcat(szVideoType, OLE2T(bstr));
MessageBox(hwnd, szVideoType, NULL, MB_OK);
SysFreeString(bstr);