- mlt_properties_set_int( producer_props, "width", *width );
- mlt_properties_set_int( producer_props, "height", *height );
+ mlt_properties_set_int( producer_props, "_width", *width );
+ mlt_properties_set_int( producer_props, "_height", *height );
+ mlt_properties_set( producer_props, "_resource", now );