diff --git a/Program.cs b/Program.cs
index f3a19ff..bea569b 100644
--- a/Program.cs
+++ b/Program.cs
@@ -13,7 +13,7 @@ namespace DualScreenDemo
         private static PrimaryForm primaryForm; // 儲存實例的參考
         public static Room room = new Room();
 
-        public static string verSion = "Server V2.8 202508081053";
+        public static string verSion = "Server V2.8 202508081600";
 
         [STAThread]
         static void Main()
diff --git a/Services/MediaService.cs b/Services/MediaService.cs
index dc19cd5..56ef7c5 100644
--- a/Services/MediaService.cs
+++ b/Services/MediaService.cs
@@ -4,7 +4,7 @@ using System.Runtime.InteropServices;
 
 namespace DualScreenDemo.Services
 {
-    public class MediaService
+    public class MediaService : Video
     {
         public IGraphBuilder graphBuilder;
         private IMediaControl mediaControl;
@@ -153,71 +153,6 @@ namespace DualScreenDemo.Services
                 videoWindow.put_Visible(OABool.True); // 显示窗口
             }
         }
-
-        private static IBaseFilter AddFilterByClsid(IGraphBuilder graphBuilder, string name, Guid clsid)
-        {
-            try
-            {
-                // 获取 CLSID 对应的类型
-                Type filterType = Type.GetTypeFromCLSID(clsid);
-                //Console.WriteLine($"Attempting to create filter of type: {filterType.FullName}");
-
-                // 创建实例
-                object filterObject = Activator.CreateInstance(filterType);
-
-                // 尝试转换为 IBaseFilter
-                IBaseFilter filter = filterObject as IBaseFilter;
-
-                if (filter == null)
-                {
-                    // 如果转换失败，使用 IUnknown 获取并转换为 IBaseFilter
-                    IntPtr comObjectPointer = Marshal.GetIUnknownForObject(filterObject);
-                    filter = (IBaseFilter)Marshal.GetObjectForIUnknown(comObjectPointer);
-                    // Console.WriteLine($"Successfully converted COM object to IBaseFilter via IUnknown.");
-                }
-                else
-                {
-                    // Console.WriteLine($"Successfully created IBaseFilter directly.");
-                }
-
-                // 添加过滤器到图形构建器
-                int hr = graphBuilder.AddFilter(filter, name);
-                if (hr != 0)
-                {
-                    // Console.WriteLine($"Failed to add filter {name} with CLSID {clsid}, HRESULT: {hr}");
-                }
-
-                DsError.ThrowExceptionForHR(hr);
-                // Console.WriteLine($"Successfully added filter {name} with CLSID {clsid}");
-                return filter;
-            }
-            catch (Exception ex)
-            {
-                Console.WriteLine($"Exception in AddFilterByClsid: {ex.Message}");
-                throw; // Rethrow the exception to handle it further up the call stack
-            }
-        }
-        private IPin FindPin(IBaseFilter filter, string pinName)
-        {
-            IEnumPins enumPins;
-            IPin[] pins = new IPin[1];
-
-            filter.EnumPins(out enumPins);
-            enumPins.Reset();
-
-            while (enumPins.Next(1, pins, IntPtr.Zero) == 0)
-            {
-                PinInfo pinInfo;
-                pins[0].QueryPinInfo(out pinInfo);
-                Console.WriteLine(pinInfo);
-
-                if (pinInfo.name == pinName)
-                {
-                    return pins[0];
-                }
-            }
-            return null;
-        }
         public void SetVolume(int volume)
         {
             if (audioRenderer != null)
@@ -358,13 +293,5 @@ namespace DualScreenDemo.Services
                 Console.WriteLine(ex.Message);
             }
         }
-        private void SafeRelease<T>(ref T comObject) where T : class
-        {
-            if (comObject != null)
-            {
-                Marshal.ReleaseComObject(comObject);
-                comObject = null;
-            }
-        }
     }
 }
\ No newline at end of file
diff --git a/Services/MediaServicePrimary.cs b/Services/MediaServicePrimary.cs
index e1855ff..78a769b 100644
--- a/Services/MediaServicePrimary.cs
+++ b/Services/MediaServicePrimary.cs
@@ -4,18 +4,18 @@ using System.Runtime.InteropServices;
 
 namespace DualScreenDemo.Services
 {
-    public class MediaServicePrimary
+    public class MediaServicePrimary : Video
     {
         IGraphBuilder graphBuilder;
-        IBaseFilter sourceFilter;
         IBaseFilter lavSplitter;
         IBaseFilter lavVideoDecoder;
         IBaseFilter videoRenderer;
         IVideoWindow videoWindow;
         IMediaControl mediaControl;
+        IBaseFilter sourceFilter;
 
 
-        public MediaServicePrimary(){}
+        public MediaServicePrimary() { }
 
         public int Run()
         {
@@ -122,89 +122,6 @@ namespace DualScreenDemo.Services
                 Console.WriteLine("Error initializing graph builder for primary monitor: " + ex.Message);
             }
         }
-        private static IBaseFilter AddFilterByClsid(IGraphBuilder graphBuilder, string name, Guid clsid)
-        {
-            try
-            {
-                // 获取 CLSID 对应的类型
-                Type filterType = Type.GetTypeFromCLSID(clsid);
-                //Console.WriteLine($"Attempting to create filter of type: {filterType.FullName}");
-
-                // 创建实例
-                object filterObject = Activator.CreateInstance(filterType);
-
-                // 尝试转换为 IBaseFilter
-                IBaseFilter filter = filterObject as IBaseFilter;
-
-                if (filter == null)
-                {
-                    // 如果转换失败，使用 IUnknown 获取并转换为 IBaseFilter
-                    IntPtr comObjectPointer = Marshal.GetIUnknownForObject(filterObject);
-                    filter = (IBaseFilter)Marshal.GetObjectForIUnknown(comObjectPointer);
-                    // Console.WriteLine($"Successfully converted COM object to IBaseFilter via IUnknown.");
-                }
-                else
-                {
-                    // Console.WriteLine($"Successfully created IBaseFilter directly.");
-                }
-
-                // 添加过滤器到图形构建器
-                int hr = graphBuilder.AddFilter(filter, name);
-                if (hr != 0)
-                {
-                    // Console.WriteLine($"Failed to add filter {name} with CLSID {clsid}, HRESULT: {hr}");
-                }
-
-                DsError.ThrowExceptionForHR(hr);
-                // Console.WriteLine($"Successfully added filter {name} with CLSID {clsid}");
-                return filter;
-            }
-            catch (Exception ex)
-            {
-                Console.WriteLine($"Exception in AddFilterByClsid: {ex.Message}");
-                throw; // Rethrow the exception to handle it further up the call stack
-            }
-        }
-        private int ConnectFilters(IGraphBuilder graphBuilder, IBaseFilter sourceFilter, string sourcePinName, IBaseFilter destFilter, string destPinName)
-        {
-            IPin outPin = FindPin(sourceFilter, sourcePinName);
-            IPin inPin = FindPin(destFilter, destPinName);
-            if (outPin == null || inPin == null)
-            {
-                Console.WriteLine(String.Format("Cannot find pins: {0} or {1}", sourcePinName, destPinName));
-                return -1;
-            }
-            int hr = graphBuilder.Connect(outPin, inPin);
-            return hr;
-        }
-        private IPin FindPin(IBaseFilter filter, string pinName)
-        {
-            IEnumPins enumPins;
-            IPin[] pins = new IPin[1];
-
-            filter.EnumPins(out enumPins);
-            enumPins.Reset();
-
-            while (enumPins.Next(1, pins, IntPtr.Zero) == 0)
-            {
-                PinInfo pinInfo;
-                pins[0].QueryPinInfo(out pinInfo);
-                Console.WriteLine(pinInfo);
-
-                if (pinInfo.name == pinName)
-                {
-                    return pins[0];
-                }
-            }
-            return null;
-        }
-        private void SafeRelease<T>(ref T comObject) where T : class
-        {
-            if (comObject != null)
-            {
-                Marshal.ReleaseComObject(comObject);
-                comObject = null;
-            }
-        }
+        
     }
 }
\ No newline at end of file
diff --git a/Services/Video.cs b/Services/Video.cs
new file mode 100644
index 0000000..6572a49
--- /dev/null
+++ b/Services/Video.cs
@@ -0,0 +1,75 @@
+using DirectShowLib;
+using System.Runtime.InteropServices;
+
+namespace DualScreenDemo.Services
+{
+    public class Video
+    {
+        protected IBaseFilter AddFilterByClsid(IGraphBuilder graphBuilder, string name, Guid clsid)
+        {
+            try
+            {
+                Type filterType = Type.GetTypeFromCLSID(clsid);
+                object filterObject = Activator.CreateInstance(filterType);
+                IBaseFilter filter = filterObject as IBaseFilter;
+
+                if (filter == null)
+                {
+                    IntPtr comObjectPointer = Marshal.GetIUnknownForObject(filterObject);
+                    filter = (IBaseFilter)Marshal.GetObjectForIUnknown(comObjectPointer);
+                }
+                
+                // 添加过滤器到图形构建器
+                int hr = graphBuilder.AddFilter(filter, name);
+                DsError.ThrowExceptionForHR(hr);
+                return filter;
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"Exception in AddFilterByClsid: {ex.Message}");
+                throw; // Rethrow the exception to handle it further up the call stack
+            }
+        }
+        protected int ConnectFilters(IGraphBuilder graphBuilder, IBaseFilter sourceFilter, string sourcePinName, IBaseFilter destFilter, string destPinName)
+        {
+            IPin outPin = FindPin(sourceFilter, sourcePinName);
+            IPin inPin = FindPin(destFilter, destPinName);
+            if (outPin == null || inPin == null)
+            {
+                Console.WriteLine(String.Format("Cannot find pins: {0} or {1}", sourcePinName, destPinName));
+                return -1;
+            }
+            int hr = graphBuilder.Connect(outPin, inPin);
+            return hr;
+        }
+        protected IPin FindPin(IBaseFilter filter, string pinName)
+        {
+            IEnumPins enumPins;
+            IPin[] pins = new IPin[1];
+
+            filter.EnumPins(out enumPins);
+            enumPins.Reset();
+
+            while (enumPins.Next(1, pins, IntPtr.Zero) == 0)
+            {
+                PinInfo pinInfo;
+                pins[0].QueryPinInfo(out pinInfo);
+                Console.WriteLine(pinInfo);
+
+                if (pinInfo.name == pinName)
+                {
+                    return pins[0];
+                }
+            }
+            return null;
+        }
+        protected void SafeRelease<T>(ref T comObject) where T : class
+        {
+            if (comObject != null)
+            {
+                Marshal.ReleaseComObject(comObject);
+                comObject = null;
+            }
+        }
+    }
+}
\ No newline at end of file