void GetSetConvertInterleaveMode(IltmmConvert *pConvert)
{
long lMode;
// get the current convert interleave mode
pConvert->get_InterleaveMode(&lMode);
// if not set to what we want, set it
if (lMode != ltmmConvert_Interleave_Convert)
pConvert->put_InterleaveMode(ltmmConvert_Interleave_Convert);
}