unity VideoPlayer的使用_unity 如何计算出videoplayer url视频当前播放的时间

         一直想做一个切换进度的功能，因为MovieTextureAPI过少，一直有这个遗憾，unity5.6之后加了一个videoPlayer组件，就想做一个，由于接触unity时间也不长，也踩了很多坑，不管怎么说，还是做了出来。不多说，上代码：

using UnityEngine;
using UnityEngine.Video;
 
public static class VideoController
{
    /// <summary>
    /// 获取视频总时长
    /// </summary>
    /// <param name="vsp"></param>
    /// <returns></returns>
    public static int GetVideoTimeCount(this VideoPlayer vp)
    {
        return (int)(vp.frameCount / vp.frameRate);
    }
    /// <summary>
    /// 获取视频进度
    /// </summary>
    /// <param name="vsp"></param>
    /// <returns></returns>
    public static float GetVideoProgression(this VideoPlayer vp)
    {
        return (float)((vp.time * vp.frameRate)/(vp.frameCount / vp.frameRate));
    }
 
    /// <summary>
    /// 设置视频进度
    /// </summary>
    /// <param name="vp"></param>
    /// <param name="progression"></param>
    public static void SetVideoProgression(this VideoPlayer vp, float progression)
    {
        float time = (int)vp.frameCount / vp.frameRate * progression;
        vp.time = time;
        vp.Play();
    }
}

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.Video;
public class VideoTest : MonoBehaviour
{
    public VideoPlayer vp;
    public Slider progression;
    public Text timeCount;
    public Text currentTime;
    void Start()
    {
        vp.Play();
        progression.value = vp.GetVideoProgression();
        progression.onValueChanged.AddListener(Changed);
        DateFormat((int)vp.GetVideoTimeCount(), timeCount);
    }
 
 
    private void DateFormat(int sec, Text text)
    {
        TimeSpan span = new TimeSpan(0, 0, 0, sec);
        text.text = (int)span.Hours + ":" + (int)span.Minutes + ":" + (int)span.Seconds;
    }
 
    // Update is called once per frame
    void Update()
    {
        DateFormat((int)vp.time, currentTime);
    }
    private void Changed(float value)
    {
        vp.SetVideoProgression(value);
    }
    public void Play()
    {
        vp.Play();
    }
    public void Pause()
    {
        vp.Pause();
    }
}

效果图如下：