Question How to get rid of "unused bindings"?

I'm using Unity 2022.2.18 and Timeline 1.7.4.

How can I delete the stuff listed under "Unused Bindings" in the Playable Director Component?

I don't need a perfect solution, just the quickest and dirtiest method that will do the trick.

 

There should be a [-] button below the binding list. you can delete unused bindings by clicking it.

 

Thanks, that definitely works. But I have like thousands of unused bindings and the Inspector is super unresponsive. It takes forever to delete just one. Is there any way to get rid of all of them in one go?

 

You can use this script to remove them. Just put this script in your project, open scene and attach the script to any arbitrary GameObject, put all PlayableDirectors you want to clear unused bindings into Directors, and hit [Remove Unused Bindings]. You can then remove this script from your project.
(I have no warranty to the script)

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using System.Linq;
4. using UnityEditor;
5. using UnityEngine;
6. using UnityEngine.Playables;
7.  
8. public class RemoveUnusedBindings : MonoBehaviour
9. {
10.     [SerializeField] private PlayableDirector[] directors;
11.  
12.  
13. #if UNITY_EDITOR
14.  
15.     [CustomEditor(typeof(RemoveUnusedBindings))]
16.     public class RemoveUnusedBindingsEditor : Editor
17.     {
18.         public override void OnInspectorGUI()
19.         {
20.             base.OnInspectorGUI();
21.             if (GUILayout.Button("Remove Unused Bindings")) {
22.                 RemoveUnusedBindings();
23.             }
24.         }
25.  
26.         private void RemoveUnusedBindings()
27.         {
28.             var directors = (target as RemoveUnusedBindings).directors;
29.             if (directors == null) return;
30.  
31.             foreach (var director in directors)
32.             {
33.                 if (!director) continue;
34.  
35.                 var directorSO = new SerializedObject(director);
36.                 var sceneBindings = directorSO.FindProperty("m_SceneBindings");
37.                 var assetBindings = director.playableAsset.outputs.ToArray();
38.  
39.                 for (var i = sceneBindings.arraySize - 1; i >= 0; i--) {
40.                     var key = sceneBindings.GetArrayElementAtIndex(i).FindPropertyRelative("key").objectReferenceValue;
41.                     bool isUnused = assetBindings.All(binding => binding.sourceObject != key);
42.                     if (isUnused) {
43.                         sceneBindings.DeleteArrayElementAtIndex(i);
44.                     }
45.                 }
46.  
47.                 directorSO.ApplyModifiedProperties();
48.             }
49.         }
50.     }
51.  
52. #endif
53. }
54.  

... or, just reset your PlayableDirector Component, and reattach those bindings which are in use.
(if there is little PlayableDirector to work)