diff --git a/MainWindow.xaml.cs b/MainWindow.xaml.cs
index 9dc63c9..dd3792e 100644
--- a/MainWindow.xaml.cs
+++ b/MainWindow.xaml.cs
@@ -680,10 +680,14 @@ public partial class MainWindow : Window
         {
             _volumeBeforeMute = SldVolume.Value;
             SldVolume.Value = 0;
+            if (_webViewReady && WebView.Visibility == Visibility.Visible)
+                WebView.CoreWebView2.ExecuteScriptAsync("document.querySelectorAll('video,audio').forEach(m => m.muted=true)");
         }
         else
         {
             SldVolume.Value = _volumeBeforeMute > 0 ? _volumeBeforeMute : 80;
+            if (_webViewReady && WebView.Visibility == Visibility.Visible)
+                WebView.CoreWebView2.ExecuteScriptAsync("document.querySelectorAll('video,audio').forEach(m => m.muted=false)");
         }
     }