/* Get the key at the position or the next following */
extern int mlt_geometry_next_key( mlt_geometry self, mlt_geometry_item item, int position );
extern int mlt_geometry_prev_key( mlt_geometry self, mlt_geometry_item item, int position );
/* Get the key at the position or the next following */
extern int mlt_geometry_next_key( mlt_geometry self, mlt_geometry_item item, int position );
extern int mlt_geometry_prev_key( mlt_geometry self, mlt_geometry_item item, int position );