diff --git a/Jellyfin.Api/Controllers/DynamicHlsController.cs b/Jellyfin.Api/Controllers/DynamicHlsController.cs
index 4d8b4de24f..7b8f874524 100644
--- a/Jellyfin.Api/Controllers/DynamicHlsController.cs
+++ b/Jellyfin.Api/Controllers/DynamicHlsController.cs
@@ -19,6 +19,8 @@ using MediaBrowser.Controller.Devices;
 using MediaBrowser.Controller.Dlna;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.MediaEncoding;
+using MediaBrowser.Controller.Net;
+using MediaBrowser.MediaEncoding.Encoder;
 using MediaBrowser.Model.Configuration;
 using MediaBrowser.Model.Dlna;
 using MediaBrowser.Model.Entities;
@@ -1654,8 +1656,8 @@ public class DynamicHlsController : BaseJellyfinApiController
             startNumber.ToString(CultureInfo.InvariantCulture),
             baseUrlParam,
             isEventPlaylist ? "event" : "vod",
-            outputTsArg,
-            outputPath).Trim();
+            EncodingUtils.NormalizePath(outputTsArg),
+            EncodingUtils.NormalizePath(outputPath)).Trim();
     }
 
     /// <summary>
diff --git a/Jellyfin.Api/Jellyfin.Api.csproj b/Jellyfin.Api/Jellyfin.Api.csproj
index a8a44fd3e0..6a0a4706be 100644
--- a/Jellyfin.Api/Jellyfin.Api.csproj
+++ b/Jellyfin.Api/Jellyfin.Api.csproj
@@ -22,6 +22,7 @@
   <ItemGroup>
     <ProjectReference Include="..\Emby.Dlna\Emby.Dlna.csproj" />
     <ProjectReference Include="..\MediaBrowser.Controller\MediaBrowser.Controller.csproj" />
+    <ProjectReference Include="..\MediaBrowser.MediaEncoding\MediaBrowser.MediaEncoding.csproj" />
     <ProjectReference Include="..\src\Jellyfin.MediaEncoding.Hls\Jellyfin.MediaEncoding.Hls.csproj" />
   </ItemGroup>
 
diff --git a/MediaBrowser.MediaEncoding/Attachments/AttachmentExtractor.cs b/MediaBrowser.MediaEncoding/Attachments/AttachmentExtractor.cs
index db177ff769..80091bf5a8 100644
--- a/MediaBrowser.MediaEncoding/Attachments/AttachmentExtractor.cs
+++ b/MediaBrowser.MediaEncoding/Attachments/AttachmentExtractor.cs
@@ -14,6 +14,7 @@ using MediaBrowser.Common.Extensions;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.MediaEncoding;
+using MediaBrowser.MediaEncoding.Encoder;
 using MediaBrowser.Model.Dto;
 using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.IO;
@@ -301,10 +302,10 @@ namespace MediaBrowser.MediaEncoding.Attachments
 
             var processArgs = string.Format(
                 CultureInfo.InvariantCulture,
-                "-dump_attachment:{1} {2} -i {0} -t 0 -f null null",
+                "-dump_attachment:{1} \"{2}\" -i {0} -t 0 -f null null",
                 inputPath,
                 attachmentStreamIndex,
-                outputPath);
+                EncodingUtils.NormalizePath(outputPath));
 
             int exitCode;
 
diff --git a/MediaBrowser.MediaEncoding/Encoder/EncodingUtils.cs b/MediaBrowser.MediaEncoding/Encoder/EncodingUtils.cs
index d0ea0429b5..95a93974ad 100644
--- a/MediaBrowser.MediaEncoding/Encoder/EncodingUtils.cs
+++ b/MediaBrowser.MediaEncoding/Encoder/EncodingUtils.cs
@@ -56,7 +56,7 @@ namespace MediaBrowser.MediaEncoding.Encoder
         /// </summary>
         /// <param name="path">The path.</param>
         /// <returns>System.String.</returns>
-        private static string NormalizePath(string path)
+        public static string NormalizePath(string path)
         {
             // Quotes are valid path characters in linux and they need to be escaped here with a leading \
             return path.Replace("\"", "\\\"", StringComparison.Ordinal);