properties = mlt_producer_properties( producer );
// Attach filters if we have a producer and it isn't already westley'd :-)
- if ( producer != NULL && mlt_properties_get( properties, "westley" ) == NULL )
+ if ( producer != NULL && mlt_properties_get( properties, "westley" ) == NULL && mlt_properties_get( properties, "_westley" ) == NULL )
attach_normalisers( producer );
// Now make sure we don't lose our identity