Reset a Unity3d PlayableDirector / Timeline

ResetTimeline.cs

using System;
using UnityEngine;
using UnityEngine.Playables;

public class ResetTimeline : MonoBehaviour
{
    public PlayableDirector playableDirector;

    private void Start()
    {
        if (!playableDirector)
            throw new ArgumentException("Missing Playable Director");
    }

    public void ResetPlayableDirector()
    {
        playableDirector.Stop();
        playableDirector.time = 0;
        playableDirector.Evaluate();
        playableDirector.Play();
    }
}