fix: allow camera usage when microphone permission is denied on Windows

samples/CommunityToolkit.Maui.Sample/Pages/Views/CameraView/CameraViewPage.xaml.cs

@@ -37,8 +37,7 @@ protected override async void OnAppearing()
 			var microphonePermissionsRequest = await Permissions.RequestAsync<Permissions.Microphone>();
 			if (microphonePermissionsRequest is not PermissionStatus.Granted)
 			{
-				await Shell.Current.CurrentPage.DisplayAlertAsync("Microphone permission is not granted.", "Please grant the permission to use this feature.", "OK");
-				return;
+				await Shell.Current.CurrentPage.DisplayAlertAsync("Microphone permission is not granted.", "Audio recording will not be available without the Microphone permission, and captured video will be silent.", "OK");
 			}
 		}
 		catch (FileNotFoundException) when (OperatingSystem.IsWindows()) // Unpackaged Windows Apps do not generate the required file AppxManifest.xml 

samples/CommunityToolkit.Maui.Sample/Platforms/Windows/Package.appxmanifest

@@ -58,6 +58,7 @@
     <Capabilities>
         <rescap:Capability Name="runFullTrust" />
         <DeviceCapability Name="microphone"/>
+        <DeviceCapability Name="webcam"/>
     </Capabilities>
 
 </Package>

src/CommunityToolkit.Maui.Camera/Extensions/CameraViewExtensions.windows.cs

@@ -1,5 +1,6 @@
 using CommunityToolkit.Maui.Core;
 using Windows.Devices.Enumeration;
+using Windows.Media;
 using Windows.Media.Capture;
 
 namespace CommunityToolkit.Maui.Extensions;
@@ -13,20 +14,40 @@ public static async Task UpdateAvailability(this ICameraView cameraView, Cancell
 		cameraView.IsAvailable = videoCaptureDevices.Count > 0;
 	}
 
-	public static Task InitializeCameraForCameraView(this MediaCapture mediaCapture, string deviceId, CancellationToken token)
+	public static async Task InitializeCameraForCameraView(this MediaCapture mediaCapture, string deviceId, CancellationToken token)
 	{
 		try
 		{
-			return mediaCapture.InitializeAsync(new MediaCaptureInitializationSettings
+			var settings = new MediaCaptureInitializationSettings
 			{
 				VideoDeviceId = deviceId,
 				PhotoCaptureSource = PhotoCaptureSource.Auto
-			}).AsTask(token);
+			};
+
+			PermissionStatus microphonePermissionStatus = PermissionStatus.Unknown;
+
+			// Permission checks require a packaged app manifest on Windows
+			var isMicrophoneCapable =
+				AppInfo.PackagingModel == AppPackagingModel.Packaged &&
+				Permissions.IsCapabilityDeclared("microphone");
+
+			if (isMicrophoneCapable)
+			{
+				microphonePermissionStatus = await Permissions.CheckStatusAsync<Permissions.Microphone>();
+			}
+
+			if (!isMicrophoneCapable || microphonePermissionStatus != PermissionStatus.Granted)
+			{
+				settings.StreamingCaptureMode = StreamingCaptureMode.Video;
+				settings.MediaCategory = MediaCategory.Media;
+				settings.AudioProcessing = AudioProcessing.Default;
+			}
+
+			await mediaCapture.InitializeAsync(settings).AsTask(token);
 		}
 		catch (System.Runtime.InteropServices.COMException)
 		{
 			// Camera already initialized
-			return Task.CompletedTask;
 		}
 	}
 }