diff --git a/AppResource.Designer.cs b/AppResource.Designer.cs
index 0f0121e..a8c3e5c 100644
--- a/AppResource.Designer.cs
+++ b/AppResource.Designer.cs
@@ -60,6 +60,15 @@ namespace VideoPreview {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to Video Preview.
+        /// </summary>
+        internal static string AppName {
+            get {
+                return ResourceManager.GetString("AppName", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized resource of type System.Drawing.Bitmap.
         /// </summary>
diff --git a/AppResource.resx b/AppResource.resx
index 499f667..b87f38c 100644
--- a/AppResource.resx
+++ b/AppResource.resx
@@ -117,6 +117,9 @@
   <resheader name="writer">
     <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=5.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
   </resheader>
+  <data name="AppName" xml:space="preserve">
+    <value>Video Preview</value>
+  </data>
   <assembly alias="System.Windows.Forms" name="System.Windows.Forms, Version=5.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
   <data name="loading_block" type="System.Resources.ResXFileRef, System.Windows.Forms">
     <value>Resources\loading-block.gif;System.Drawing.Bitmap, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
diff --git a/MainForm.cs b/MainForm.cs
index 9260830..de8f890 100644
--- a/MainForm.cs
+++ b/MainForm.cs
@@ -99,6 +99,9 @@ namespace VideoPreview
         /// <param name="e"></param>
         private async void button3_MouseClick(object sender, MouseEventArgs e)
         {
+            if (this.IsBusy) return;
+            if (string.IsNullOrWhiteSpace(textBox1.Text)) return;
+
             await ReadVideoFile(textBox1.Text);
         }
 
@@ -166,6 +169,7 @@ namespace VideoPreview
             videoFilename = null;
             videoDuration = TimeSpan.FromSeconds(0);
 
+            ThreadControl.SetText(this, AppResource.AppName);
             textBox1.Text = string.Empty;
             ThreadControl.SetText(label5, "-");
             ThreadControl.SetText(label7, "-");
@@ -279,6 +283,8 @@ namespace VideoPreview
                 videoFilename = filename;
                 videoDuration = inputFile.Metadata.Duration;
 
+                ThreadControl.SetText(this, Path.GetFileName(filename) + " - " + AppResource.AppName);
+
                 textBox1.Text = videoFilename;
                 ThreadControl.SetText(label5, inputFile.Metadata.VideoData.Format ?? string.Empty);
                 ThreadControl.SetText(label7, (inputFile.Metadata.VideoData.FrameSize ?? string.Empty) + " @ " + inputFile.Metadata.VideoData.Fps.ToString() + "FPS");