How can i code to delete unused bindings in PlayableDirector?

Questions & Answers
1

Becasuse of some manual copies of PlayableDirector，now PlayableDirector Components in some Prefab have many unused bindings. Are there some apis to get all bindinds in PlayableDirector?180062-bingdings.png

3

This may have changed in later versions I think. In Unity 2021.2.16 / Timeline 1.6.4 at least there’s a little minus sign at the very bottom-right of the Bindings field. Highlight the unused binding (or entire unused Timeline), and hit the minus to remove the ones not used.

2

It’s hard to delete the unused bindings…since it stored in a property named ‘m_SceneBindings’ which cannot be read/written directly.
A workaround to remove the unused bindings is to create a new Playable Director and copy the bindings from the old one.

Sample code:

private static void PlayableDirectorRebinding(PlayableDirector playableDirector)
{
    if (playableDirector != null)
    {
        var timeline = playableDirector.playableAsset as TimelineAsset;
        if (timeline != null)
        {
            var bindings = new Dictionary<Object, Object>();
            foreach (var playableBinding in timeline.outputs)
            {
                bindings.Add(playableBinding.sourceObject, playableDirector.GetGenericBinding(playableBinding.sourceObject));
            }
            var timelineGameObject = playableDirector.gameObject;
            GameObject.DestroyImmediate(playableDirector);
            playableDirector = timelineGameObject.AddComponent<PlayableDirector>();
            foreach (var entry in bindings)
            {
                playableDirector.SetGenericBinding(entry.Key, entry.Value);
            }
        }
    }
}

Reference form here: Timeline Note--引用无关资源_timelineasset 复制问题_cai612781的博客-CSDN博客