mlt_properties_set_int( luma_properties, "in", 0 );
mlt_properties_set_int( luma_properties, "out", out );
mlt_properties_set_int( luma_properties, "reverse", 1 );
mlt_properties_set_int( luma_properties, "in", 0 );
mlt_properties_set_int( luma_properties, "out", out );
mlt_properties_set_int( luma_properties, "reverse", 1 );