* which is a way to add filters as a playlist entry - useful only in a multitrack. See FxCut on the wiki.
* \properties \em mix_in
* \properties \em mix_out
+ * \properties \em hide Set to 1 to hide the video (make it an audio-only track),
+ * 2 to hide the audio (make it a video-only track), or 3 to hide audio and video (hidden track).
+ * This property only applies when using a multitrack or transition.
* \event \em playlist-next The playlist fires this when it moves to the next item in the list.
* The listener receives one argument that is the index of the entry that just completed.
*/
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 );