void LateUpdate()
    {
        if (snapCam.gameObject.activeInHierarchy)
        {
            Texture2D snapshot = new Texture2D(resWidth, resHeight, TextureFormat.RGB24, false);
            snapCam.Render();
            RenderTexture.active = snapCam.targetTexture;

            snapshot.ReadPixels(new Rect(0, 0, resWidth, resHeight), 0, 0);
            byte[] bytes = snapshot.EncodeToPNG();
            string filename = SnapshotName();
            System.IO.File.WriteAllBytes(filename, bytes);


            if (count == 50)
            {
                count = 0;
            }
            snapCam.gameObject.SetActive(false);
        }
    }
    string SnapshotName()
    {
        count++;
        return string.Format("{0}/Resources/{1}.png",
            Application.dataPath,
            count);
    }