HOW TO TAKE A SCREENSHOT AND SAVE TO FILE AS JPG?

Ankita Pandey

Total Post:183

Points:1285
Posted by  Ankita Pandey
C#  Android 
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I am trying to Take a screencapture and save it to a file in jpg format.
This is what I have so far:

    string jpgFile = Application.persistentDataPath + "/scrn-1.jpg";
    Texture2D tex = new Texture2D (Screen.width, Screen.height);
    tex.ReadPixels (new Rect(0, 0, Screen.width, Screen.height), 0, 0);
    tex.Apply ();
    var bytes = tex.EncodeToJPG();
    Destroy (tex);
    System.IO.File.WriteAllBytes(jpgFile, bytes);
I have found that running this in Unity on iOS gives me:

JPEG parameter struct mismatch: library thinks size is 372, caller expects 360

However if I change the conversion to tex.EncodeToPNG(); and change the file name to .png everything works fine. I am not sure how to proceed any assistance would be appreciated. Thanks.
  1. marcel ethan

    Post:105

    Points:735
    Re: How to take a screenshot and save to file as jpg?

    I found this, which lets you save it as .jpg. I normally just use capture screen and save as .png.

    Here you go:

    using UnityEngine;

    using System.Collections;


    public class HiResScreenShots : MonoBehaviour {

        public int resWidth = 2550; 

        public int resHeight = 3300;


        private bool takeHiResShot = false;


        public static string ScreenShotName(int width, int height) {

            return string.Format("{0}/screenshots/screen_{1}x{2}_{3}.png", 

                                 Application.dataPath, 

                                 width, height, 

                                 System.DateTime.Now.ToString("yyyy-MM-dd_HH-mm-ss"));

        }


        public void TakeHiResShot() {

            takeHiResShot = true;

        }


        void LateUpdate() {

            takeHiResShot |= Input.GetKeyDown("k");

            if (takeHiResShot) {

                RenderTexture rt = new RenderTexture(resWidth, resHeight, 24);

                camera.targetTexture = rt;

                Texture2D screenShot = new Texture2D(resWidth, resHeight, TextureFormat.RGB24, false);

                camera.Render();

                RenderTexture.active = rt;

                screenShot.ReadPixels(new Rect(0, 0, resWidth, resHeight), 0, 0);

                camera.targetTexture = null;

                RenderTexture.active = null; // JC: added to avoid errors

                Destroy(rt);

                byte[] bytes = screenShot.EncodeToPNG();

                string filename = ScreenShotName(resWidth, resHeight);

                System.IO.File.WriteAllBytes(filename, bytes);

                Debug.Log(string.Format("Took screenshot to: {0}", filename));

                takeHiResShot = false;

            }

        }

    }

    If you just want any kind of picture I highly recommend this:


    using UnityEngine;

    using System.Collections;

    public class ExampleClass : MonoBehaviour 

    {

        void OnMouseDown() 

        {

            Application.CaptureScreenshot("Screenshot.png");

        }

    }

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