diff --git a/DownKyi/Utils/DialogUtils.cs b/DownKyi/Utils/DialogUtils.cs
index 48bc315..2376ae7 100644
--- a/DownKyi/Utils/DialogUtils.cs
+++ b/DownKyi/Utils/DialogUtils.cs
@@ -22,5 +22,24 @@ namespace DownKyi.Utils
                 ? string.IsNullOrEmpty(dialog.SelectedPath) ? "" : dialog.SelectedPath : "";
         }
 
+        /// <summary>
+        /// 选择视频dialog
+        /// </summary>
+        /// <returns></returns>
+        public static string SelectVideoFile()
+        {
+            // 选择文件
+            var dialog = new Microsoft.Win32.OpenFileDialog
+            {
+                Filter = "mp4 (*.mp4)|*.mp4"
+            };
+            var showDialog = dialog.ShowDialog();
+            if (showDialog == true)
+            {
+                return dialog.FileName;
+            }
+            else { return ""; }
+        }
+
     }
 }
diff --git a/DownKyi/ViewModels/Toolbox/ViewDelogoViewModel.cs b/DownKyi/ViewModels/Toolbox/ViewDelogoViewModel.cs
index d1dbc89..000959e 100644
--- a/DownKyi/ViewModels/Toolbox/ViewDelogoViewModel.cs
+++ b/DownKyi/ViewModels/Toolbox/ViewDelogoViewModel.cs
@@ -93,7 +93,7 @@ namespace DownKyi.ViewModels.Toolbox
                 return;
             }
 
-            VideoPath = SelectVideoFile();
+            VideoPath = DialogUtils.SelectVideoFile();
         }
 
         // 去水印事件
@@ -172,24 +172,5 @@ namespace DownKyi.ViewModels.Toolbox
 
         #endregion
 
-        /// <summary>
-        /// 选择视频dialog
-        /// </summary>
-        /// <returns></returns>
-        private string SelectVideoFile()
-        {
-            // 选择文件
-            var dialog = new Microsoft.Win32.OpenFileDialog
-            {
-                Filter = "mp4 (*.mp4)|*.mp4"
-            };
-            var showDialog = dialog.ShowDialog();
-            if (showDialog == true)
-            {
-                return dialog.FileName;
-            }
-            else { return ""; }
-        }
-
     }
 }
diff --git a/DownKyi/ViewModels/Toolbox/ViewExtractMediaViewModel.cs b/DownKyi/ViewModels/Toolbox/ViewExtractMediaViewModel.cs
index 286d558..bd8e1e7 100644
--- a/DownKyi/ViewModels/Toolbox/ViewExtractMediaViewModel.cs
+++ b/DownKyi/ViewModels/Toolbox/ViewExtractMediaViewModel.cs
@@ -60,7 +60,7 @@ namespace DownKyi.ViewModels.Toolbox
                 return;
             }
 
-            VideoPath = SelectVideoFile();
+            VideoPath = DialogUtils.SelectVideoFile();
         }
 
         // 提取音频事件
@@ -155,24 +155,5 @@ namespace DownKyi.ViewModels.Toolbox
 
         #endregion
 
-        /// <summary>
-        /// 选择视频dialog
-        /// </summary>
-        /// <returns></returns>
-        private string SelectVideoFile()
-        {
-            // 选择文件
-            var dialog = new Microsoft.Win32.OpenFileDialog
-            {
-                Filter = "mp4 (*.mp4)|*.mp4"
-            };
-            var showDialog = dialog.ShowDialog();
-            if (showDialog == true)
-            {
-                return dialog.FileName;
-            }
-            else { return ""; }
-        }
-
     }
 }