mlt_playlist.c: fix some blank-handling bugs in mlt_playlist_insert_at()

[melted] / src / framework / mlt_playlist.c

diff --git a/src/framework/mlt_playlist.c b/src/framework/mlt_playlist.c
index 240c523..7dbbd7b 100644 (file)
--- a/src/framework/mlt_playlist.c
+++ b/src/framework/mlt_playlist.c
@@ -1271,7 +1271,7 @@ int mlt_playlist_insert_at( mlt_playlist this, mlt_position position, mlt_produc
                if ( clip < this->count && mlt_playlist_is_blank( this, clip ) )
                {
                        // Split and move to new clip if need be
-                       if ( position != info.start && mlt_playlist_split( this, clip, position - info.start ) == 0 )
+                       if ( position != info.start && mlt_playlist_split( this, clip, position - info.start - 1 ) == 0 )
                                mlt_playlist_get_clip_info( this, &info, ++ clip );
 
                        // Split again if need be
@@ -1301,8 +1301,12 @@ int mlt_playlist_insert_at( mlt_playlist this, mlt_position position, mlt_produc
                }
                else 
                {
-                       if ( mode == 1 )
-                               mlt_playlist_blank( this, position - mlt_properties_get_int( properties, "length" ) );
+                       if ( mode == 1 ) {
+                               if ( position == info.start ) 
+                                       mlt_playlist_remove( this, clip );
+                               else
+                                       mlt_playlist_blank( this, position - mlt_properties_get_int( properties, "length" ) - 1 );
+                       }
                        mlt_playlist_append( this, producer );
                        ret = this->count - 1;
                }