diff --git a/waifu2x.py b/waifu2x.py
index 53507ab..97aecee 100644
--- a/waifu2x.py
+++ b/waifu2x.py
@@ -4,15 +4,14 @@
 Name: FFMPEG Class
 Author: K4YT3X
 Date Created: Feb 24, 2018
-Last Modified: Feb 25, 2018
+Last Modified: May 19, 2018
 
 Description: This class controls waifu2x
 engine
 
-Version 1.1
+Version 2.0
 """
-
-import os
+import subprocess
 
 
 class WAIFU2X:
@@ -22,24 +21,27 @@ class WAIFU2X:
     about the binary address and the processing method. When being called
     by the main program, other detailed information will be passed to
     the upscale function.
-
-    TODO: Make enhancement model customizable
     """
 
-    def __init__(self, waifu2x_path, method):
+    def __init__(self, waifu2x_path, method, model_type):
         self.waifu2x_path = waifu2x_path
         self.method = method
+        self.model_type = model_type
 
-    def upscale(self, folderin, folderout, width, height, model_type):
+    def upscale(self, file, upscaled, width, height):
         """This is the core function for WAIFU2X class
 
         [description]
 
         Arguments:
-            folderin {string} -- source folder path
-            folderout {string} -- output folder path
+            file {string} -- input image
+            upscaled {string} -- output folder path
             width {int} -- output video width
             height {int} -- output video height
+            model_type {string} -- model to use for upscaling
         """
-        os.system("{} -p {} -I png -i {} -e png -o {} -w {} -h {} -n 3 -m noise_scale -y {}".format(
-            self.waifu2x_path, self.method, folderin, folderout, width, height, model_type))
+        file_id = file.split('extracted_')[-1].split('.png')[0]
+        output_file = '{}\\{}{}{}'.format(upscaled, 'extracted_', file_id, '.png')
+        execute = "{} -p {} -I png -i {} -e png -o {} -w {} -h {} -n 3 -m noise_scale -y {}".format(
+            self.waifu2x_path, self.method, file, output_file, width, height, self.model_type)
+        subprocess.call(execute, stdout=subprocess.DEVNULL, stderr=subprocess.STDOUT)