extern void mlt_playlist_consolidate_blanks( mlt_playlist self, int keep_length );
extern int mlt_playlist_is_blank( mlt_playlist self, int clip );
extern int mlt_playlist_is_blank_at( mlt_playlist self, mlt_position position );
-extern void mlt_playlist_insert_blank( mlt_playlist self, int clip, int length );
+extern void mlt_playlist_insert_blank( mlt_playlist self, int clip, int out );
extern void mlt_playlist_pad_blanks( mlt_playlist self, mlt_position position, int length, int find );
extern mlt_producer mlt_playlist_replace_with_blank( mlt_playlist self, int clip );
extern int mlt_playlist_insert_at( mlt_playlist self, mlt_position position, mlt_producer producer, int mode );