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Question How to clear dirty Playable Asset data?

Discussion in 'Timeline' started by seoyeon222222, Oct 29, 2023.

  1. seoyeon222222


    Nov 18, 2020
    There is a PlayableAsset that used to use Custom Track and Custom Clip.
    I deleted the related script(Custom Track, Clip)
    And I can no longer see the elements related to it on PlayableAsset.

    This causes the following warning.

    "The referenced script (Unknown) on this Behaviour is missing!"

    In fact, if i open a Playable file through Text Editor and read YAML,
    There's a lot of dirty data that i don't use.
    This seems to be causing an error.
    I want to delete the Dirty data that are not actually used.
    But in unity editor, i can't see any element of dirty things.
    i try AssetDatabase.ForceReserializeAsets and Reimport, but does not resolve.

    How do I solve this problem?
  2. wumu_


    Dec 11, 2023
    Because unity hides the timeline's sub-assets by default, they are ScriptableObjects. you can view them through some plugins or show them through code.
    Here is the link:
    And the link of plugin:
    I recommend using the plugin I mentioned, but here is code to log subAssets.
    Just right click the timeline in the project view and select "Show SubAssets of Timeline Asset" from the context menu.
    Code (CSharp):
    1. using UnityEngine.Timeline;
    2.     using UnityEngine;
    3.     using UnityEditor;
    4.     public class ShowSubAssets
    5.     {
    6.         [MenuItem("Assets/Show SubAssets of Timeline Asset")]
    7.         public static void ShowSubAssetsFunction()
    8.         {
    9.             Object selection = Selection.activeObject;
    10.             string assetPath = AssetDatabase.GetAssetPath(selection);
    11.             Object[] subAssets = AssetDatabase.LoadAllAssetsAtPath(assetPath);
    12.             Debug.Log($"subAssets length: {subAssets.Length}");
    13.             foreach (Object subAsset in subAssets)
    14.             {
    15.                 Debug.Log($" : {}; type: {subAsset.GetType()}");
    16.                 if (subAsset is Marker marker && marker.parent ==null)
    17.                 {
    18.                     // If it doesn't have parent, I think you want to delete it.
    19.                     Debug.Log($"{} doesn't have parent.");
    21.                 }else if (subAsset is TrackAsset markerTrack && markerTrack.parent ==null)
    22.                 {
    23.                     Debug.Log($"{} doesn't have parent.");
    24.                 }
    25.             }
    26.         }
    27.     }