VideoPlayer VP;
if(VP.frameCount > 0) { 
    slider_value = (float)VP.frame / (float)VP.frameCount;
}

VideoClip VC;
VC.length;
VideoPlayer VP;
VP.clip.length; //초단위

using System;
TimeSpan seconds = TimeSpan.FromSeconds(value);
string time = seconds.ToString(@"hh\:mm\:ss");
Debug.Log(time);

_video.time = Progress * _video.clip.length;

public VideoPlayer _videoPlayer;

void Awake()
{
    _videoPlayer.prepareCompleted += OnVideoPrepared;
    _videoPlayer.clip = Resources.Load<VideoClip>("ExamClip"); 
    // "Resources/ExamClip.mp4"
    _videoPlayer.Prepare();
}

void OnVideoPrepared(VideoPlayer source_)
{
    _videoPlayer.Play();
}

using UnityEngine;
using UnityEngine.Video;

public class LoadVideo : MonoBehaviour
{
   public VideoPlayer myVideoPlayer;
   void Start()
   {
       string videoUrl= Application.streamingAssetsPath +"/"+ "ExamClip" + ".mp4";
       // "StreamingAssets/ExamClip.mp4
       myVideoPlayer.url = videoUrl;
   }
}

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Video;

public class VideoCheckNext : MonoBehaviour
{
    public double time;
    public double currentTime;
    // Use this for initialization
    void Start()
    {

        time = gameObject.GetComponent<VideoPlayer>().clip.length;
    }


    // Update is called once per frame
    void Update()
    {
        currentTime = gameObject.GetComponent<VideoPlayer>().time;
        if (currentTime >= time)
        {
            Debug.Log("//do Stuff");
        }
    }
}