diff --git a/src/main/java/GUI.form b/src/main/java/GUI.form
new file mode 100644
index 0000000..94c37be
--- /dev/null
+++ b/src/main/java/GUI.form
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<form xmlns="http://www.intellij.com/uidesigner/form/" version="1" bind-to-class="GUI">
+  <grid id="27dc6" row-count="1" column-count="1" layout-manager="GridLayoutManager">
+    <margin top="0" left="0" bottom="0" right="0"/>
+    <constraints>
+      <xy x="20" y="20" width="500" height="400"/>
+      <grid row="0" column="0" row-span="1" col-span="1" vsize-policy="3" hsize-policy="3" anchor="0" fill="3" indent="0" use-parent-layout="false"/>
+    </constraints>
+    <properties/>
+    <border type="none"/>
+    <children/>
+  </grid>
+</form>
diff --git a/src/main/java/GUI.java b/src/main/java/GUI.java
new file mode 100644
index 0000000..92caeee
--- /dev/null
+++ b/src/main/java/GUI.java
@@ -0,0 +1,99 @@
+import lombok.extern.log4j.Log4j2;
+import model.FileAttribute;
+import query.QueryBuilder;
+
+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.io.*;
+import java.nio.charset.Charset;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+
+@Log4j2
+public class GUI {
+    private String path;
+    private JButton openFileBrowser;
+    private JButton startOperation;
+    private JButton openProperties;
+    private JTextPane outputArea;
+
+    public GUI() {
+        JFrame frame = new JFrame();
+        frame.setLayout(new BorderLayout());
+        frame.setTitle("MKV Audio and Subtitle Changer");
+        frame.setSize(500, 300);
+        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
+
+        JPanel top = new JPanel(new GridLayout(1, 3, 20, 20));
+
+        outputArea = new JTextPane();
+        outputArea.setEditable(false);
+
+        openFileBrowser = new JButton("Browse directory");
+        openFileBrowser.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                JFileChooser fileChooser = new JFileChooser();
+                try{
+                    if(! readFile("lastDir", Charset.defaultCharset()).isEmpty()){
+                        String temp = readFile("dir.txt", Charset.defaultCharset());
+                        fileChooser.setCurrentDirectory(new File(temp));
+                    }
+                }catch(IOException ie){
+                    log.info("Couldn't start FileChooser with default path");
+                }
+                fileChooser.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
+                fileChooser.setMultiSelectionEnabled(false);
+                fileChooser.setPreferredSize(new Dimension(600, 500));
+                Action details = fileChooser.getActionMap().get("viewTypeDetails");
+                details.actionPerformed(null);
+                fileChooser.showOpenDialog(null);
+                try{
+                    if(FileAttribute.pathIsValid(fileChooser.getSelectedFile().getAbsolutePath())){
+                        path = fileChooser.getSelectedFile().getAbsolutePath();
+                        try(PrintWriter out = new PrintWriter("lastDir", "UTF-8")){
+                            out.print(fileChooser.getCurrentDirectory());
+                        }catch(FileNotFoundException | UnsupportedEncodingException fne){
+                            log.error(fne);
+                        }
+                        startOperation.setEnabled(true);
+                    }
+                }catch(NullPointerException ne){
+                    outputArea.setText("File or directory not found!\n" + (outputArea.getText() == null ? "" : outputArea.getText()));
+                    log.error("File or directory not found!", ne);
+                }
+            }
+        });
+
+        openProperties = new JButton("Open properties");
+        openProperties.setEnabled(false);
+
+        startOperation = new JButton("Start updating");
+        startOperation.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                QueryBuilder queryBuilder = new QueryBuilder();
+                if(queryBuilder.executeUpdateOnAllFiles(path, outputArea)){
+                    outputArea.setText("All files updated!\n" + (outputArea.getText() == null ? "" : outputArea.getText()));
+                }
+            }
+        });
+        startOperation.setEnabled(false);
+
+        top.add(openFileBrowser);
+        top.add(startOperation);
+        top.add(openProperties);
+
+        frame.add(top, BorderLayout.NORTH);
+        frame.add(outputArea);
+
+        frame.setVisible(true);
+    }
+
+    static String readFile(String path, Charset encoding) throws IOException {
+        byte[] encoded = Files.readAllBytes(Paths.get(path));
+        return new String(encoded, encoding);
+    }
+}
diff --git a/src/main/java/Main.java b/src/main/java/Main.java
index f61cb42..4283ea4 100644
--- a/src/main/java/Main.java
+++ b/src/main/java/Main.java
@@ -1,8 +1,5 @@
 import config.MKVToolProperties;
 import lombok.extern.log4j.Log4j2;
-import query.QueryBuilder;
-
-import java.util.Scanner;
 
 @Log4j2
 public class Main {
@@ -10,11 +7,7 @@ public class Main {
 
     public static void main(String[] args) {
         MKVToolProperties.getInstance().defineMKVToolNixPath();
-        Scanner input = new Scanner(System.in);
-        log.info("Please enter path to file");
-        String path = input.nextLine();
-        QueryBuilder queryBuilder = new QueryBuilder();
-        queryBuilder.executeUpdateOnAllFiles(path);
+        GUI gui = new GUI();
     }
 
 
diff --git a/src/main/java/model/FileAttribute.java b/src/main/java/model/FileAttribute.java
index f6a6149..00c3dbc 100644
--- a/src/main/java/model/FileAttribute.java
+++ b/src/main/java/model/FileAttribute.java
@@ -1,7 +1,18 @@
 package model;
 
 import lombok.Getter;
+import lombok.extern.log4j.Log4j2;
 
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.List;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+@Log4j2
 @Getter
 public class FileAttribute {
     private int id;
@@ -19,4 +30,28 @@ public class FileAttribute {
         this.forcedTrack = forcedTrack;
         this.type = type;
     }
+
+    public static boolean pathIsValid(String path) {
+        File file = new File(path);
+        if(file.isFile()){
+            return file.getAbsolutePath().endsWith(".mkv");
+        }
+        if(file.isDirectory()){
+            try(Stream<Path> paths = Files.walk(Paths.get(path))){
+                List<String> allPaths = paths
+                        .filter(Files::isRegularFile)
+                        .map(f -> f.toAbsolutePath().toString())
+                        .collect(Collectors.toList());
+                for(String filePath : allPaths){
+                    if(! filePath.endsWith(".mkv")){
+                        return false;
+                    }
+                }
+            }catch(IOException e){
+                log.error("Couldn't find file or directory!", e);
+            }
+            return true;
+        }
+        return false;
+    }
 }
diff --git a/src/main/java/query/QueryBuilder.java b/src/main/java/query/QueryBuilder.java
index 028b09b..a0d1521 100644
--- a/src/main/java/query/QueryBuilder.java
+++ b/src/main/java/query/QueryBuilder.java
@@ -5,6 +5,7 @@ import config.MKVToolProperties;
 import lombok.extern.log4j.Log4j2;
 import model.FileAttribute;
 
+import javax.swing.*;
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.file.Files;
@@ -23,7 +24,7 @@ public class QueryBuilder {
     public QueryBuilder() {
     }
 
-    public boolean executeUpdateOnAllFiles(String path) {
+    public boolean executeUpdateOnAllFiles(String path, JTextPane outputArea) {
         List<String> allFilePaths = getAllFilesFromDirectory(path);
         if(allFilePaths == null){
             log.error("Couldn't process path!");
@@ -31,6 +32,7 @@ public class QueryBuilder {
         }
         for(String filePath : allFilePaths){
             updateAttributes(filePath, queryAttributes(filePath));
+            outputArea.setText("Success: " + filePath + "\n" + outputArea.getPage());
         }
         return true;
     }