QString propName = mlt_properties_get_name(transproperties, i);
if (!propName.startsWith('_') && ! permanentProps.contains(propName)) {
mlt_properties_set(transproperties, propName.toUtf8().constData(), "");
QString propName = mlt_properties_get_name(transproperties, i);
if (!propName.startsWith('_') && ! permanentProps.contains(propName)) {
mlt_properties_set(transproperties, propName.toUtf8().constData(), "");