diff --git a/Tech/Tech.csproj b/Tech/Tech.csproj
index c35f179..4043c17 100644
--- a/Tech/Tech.csproj
+++ b/Tech/Tech.csproj
@@ -42,6 +42,12 @@
     <Reference Include="LibVLCSharp.WinForms, Version=3.6.7.0, Culture=neutral, processorArchitecture=MSIL">
       <HintPath>..\packages\LibVLCSharp.WinForms.3.6.7\lib\net40\LibVLCSharp.WinForms.dll</HintPath>
     </Reference>
+    <Reference Include="Microsoft.WindowsAPICodePack, Version=1.1.0.0, Culture=neutral, processorArchitecture=MSIL">
+      <HintPath>..\packages\WindowsAPICodePack-Core.1.1.1\lib\Microsoft.WindowsAPICodePack.dll</HintPath>
+    </Reference>
+    <Reference Include="Microsoft.WindowsAPICodePack.Shell, Version=1.1.0.0, Culture=neutral, processorArchitecture=MSIL">
+      <HintPath>..\packages\WindowsAPICodePack-Shell.1.1.1\lib\Microsoft.WindowsAPICodePack.Shell.dll</HintPath>
+    </Reference>
     <Reference Include="mscorlib" />
     <Reference Include="System" />
     <Reference Include="System.Buffers, Version=4.0.3.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL">
@@ -86,12 +92,6 @@
       <DependentUpon>Form1.cs</DependentUpon>
     </Compile>
     <Compile Include="GetIPNetTable.cs" />
-    <Compile Include="MultiPlayerView.cs">
-      <SubType>UserControl</SubType>
-    </Compile>
-    <Compile Include="MultiPlayerView.Designer.cs">
-      <DependentUpon>MultiPlayerView.cs</DependentUpon>
-    </Compile>
     <Compile Include="PlayerView.cs">
       <SubType>UserControl</SubType>
     </Compile>
@@ -106,12 +106,10 @@
     <Compile Include="UCOverview.Designer.cs">
       <DependentUpon>UCOverview.cs</DependentUpon>
     </Compile>
+    <Compile Include="util\Thumbnail.cs" />
     <EmbeddedResource Include="Form1.resx">
       <DependentUpon>Form1.cs</DependentUpon>
     </EmbeddedResource>
-    <EmbeddedResource Include="MultiPlayerView.resx">
-      <DependentUpon>MultiPlayerView.cs</DependentUpon>
-    </EmbeddedResource>
     <EmbeddedResource Include="PlayerView.resx">
       <DependentUpon>PlayerView.cs</DependentUpon>
     </EmbeddedResource>
diff --git a/Tech/packages.config b/Tech/packages.config
index a8a95d2..4fc1aa7 100644
--- a/Tech/packages.config
+++ b/Tech/packages.config
@@ -10,4 +10,6 @@
   <package id="Vlc.DotNet.Core" version="3.1.0" targetFramework="net472" />
   <package id="Vlc.DotNet.Core.Interops" version="3.1.0" targetFramework="net472" />
   <package id="Vlc.DotNet.Forms" version="3.1.0" targetFramework="net472" />
+  <package id="WindowsAPICodePack-Core" version="1.1.1" targetFramework="net472" />
+  <package id="WindowsAPICodePack-Shell" version="1.1.1" targetFramework="net472" />
 </packages>
\ No newline at end of file
diff --git a/Tech/util/Thumbnail.cs b/Tech/util/Thumbnail.cs
new file mode 100644
index 0000000..0a11ce5
--- /dev/null
+++ b/Tech/util/Thumbnail.cs
@@ -0,0 +1,18 @@
+using System.Drawing;
+using Microsoft.WindowsAPICodePack.Shell;
+
+namespace Tech_Demo.util
+{
+    public class Thumbnail
+    {
+        /**
+         * 視頻縮略圖工具欄
+         */
+        public static Bitmap GetThumbnailByPath(string filePath)
+        {
+            ShellFile shellFile = ShellFile.FromFilePath(filePath);
+            Bitmap thumbnail = shellFile.Thumbnail.ExtraLargeBitmap;
+            return thumbnail;
+        }
+    }
+}
\ No newline at end of file