extern mlt_service mlt_producer_service( mlt_producer self );
extern mlt_properties mlt_producer_properties( mlt_producer self );
extern int mlt_producer_seek( mlt_producer self, mlt_position position );
extern mlt_service mlt_producer_service( mlt_producer self );
extern mlt_properties mlt_producer_properties( mlt_producer self );
extern int mlt_producer_seek( mlt_producer self, mlt_position position );