Question about recording UNI.T screen.

using UnityEngine;

public class ScreenshotMovie : MonoBehaviour
{
 // // The folder we place all screenshots inside.
 // // If the folder exists we will append numbers to create an empty folder.
 public string folder = "ScreenshotMovieOutput";
 public int frameRate = 25;
 public int sizeMultiplier = 1;

 private string realFolder = "";

 void Start()
 {
  // // Set the playback framerate!
  // // (real time doesn't influence time anymore)
  Time.captureFramerate = frameRate;

  // // Find a folder that doesn't exist yet by appending numbers!
  realFolder = folder;
  int count = 1;
  while (System.IO.Directory.Exists(realFolder))
  {
   realFolder = folder + count;
   count++;
  }
  // // Create the folder
  System.IO.Directory.CreateDirectory(realFolder);
 }

 void Update()
 {
  // // name is "realFolder/shot 0005.png"
  var name = string.Format("{0}/shot {1:D04}.png", realFolder, Time.frameCount);

  // // Capture the screenshot
  Application.CaptureScreenshot(name, sizeMultiplier);
 }
}