6 files changed, 20 insertions, 19 deletions
diff --git a/Jellyfin.Api/Helpers/DynamicHlsHelper.cs b/Jellyfin.Api/Helpers/DynamicHlsHelper.cs
index 6a8829d46..af0519ffa 100644
--- a/Jellyfin.Api/Helpers/DynamicHlsHelper.cs
+++ b/Jellyfin.Api/Helpers/DynamicHlsHelper.cs
@@ -8,6 +8,7 @@ using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
 using Jellyfin.Api.Models.StreamingDtos;
+using MediaBrowser.Common.Extensions;
 using MediaBrowser.Common.Net;
 using MediaBrowser.Controller.Configuration;
 using MediaBrowser.Controller.Devices;
@@ -198,12 +199,12 @@ namespace Jellyfin.Api.Helpers
 
             if (!string.IsNullOrWhiteSpace(subtitleGroup))
             {
-                AddSubtitles(state, subtitleStreams, builder, _httpContextAccessor.HttpContext.Request.HttpContext.User);
+                AddSubtitles(state, subtitleStreams, builder, _httpContextAccessor.HttpContext.User);
             }
 
             AppendPlaylist(builder, state, playlistUrl, totalBitrate, subtitleGroup);
 
-            if (EnableAdaptiveBitrateStreaming(state, isLiveStream, enableAdaptiveBitrateStreaming, _httpContextAccessor.HttpContext.Request.HttpContext.Connection.RemoteIpAddress))
+            if (EnableAdaptiveBitrateStreaming(state, isLiveStream, enableAdaptiveBitrateStreaming, _httpContextAccessor.HttpContext.GetNormalizedRemoteIp()))
             {
                 var requestedVideoBitrate = state.VideoRequest == null ? 0 : state.VideoRequest.VideoBitRate ?? 0;
 
@@ -334,11 +335,10 @@ namespace Jellyfin.Api.Helpers
             }
         }
 
-        private bool EnableAdaptiveBitrateStreaming(StreamState state, bool isLiveStream, bool enableAdaptiveBitrateStreaming, IPAddress ipAddress)
+        private bool EnableAdaptiveBitrateStreaming(StreamState state, bool isLiveStream, bool enableAdaptiveBitrateStreaming, string ipAddress)
         {
             // Within the local network this will likely do more harm than good.
-            var ip = RequestHelpers.NormalizeIp(ipAddress).ToString();
-            if (_networkManager.IsInLocalNetwork(ip))
+            if (_networkManager.IsInLocalNetwork(ipAddress))
             {
                 return false;
             }
diff --git a/Jellyfin.Api/Helpers/FileStreamResponseHelpers.cs b/Jellyfin.Api/Helpers/FileStreamResponseHelpers.cs
index 884bfbe44..6b516977e 100644
--- a/Jellyfin.Api/Helpers/FileStreamResponseHelpers.cs
+++ b/Jellyfin.Api/Helpers/FileStreamResponseHelpers.cs
@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.IO;
 using System.Net.Http;
 using System.Threading;
@@ -123,10 +123,9 @@ namespace Jellyfin.Api.Helpers
                     state.Dispose();
                 }
 
-                var memoryStream = new MemoryStream();
-                await new ProgressiveFileCopier(outputPath, job, transcodingJobHelper, CancellationToken.None).WriteToAsync(memoryStream, CancellationToken.None).ConfigureAwait(false);
-                memoryStream.Position = 0;
-                return new FileStreamResult(memoryStream, contentType);
+                await new ProgressiveFileCopier(outputPath, job, transcodingJobHelper, CancellationToken.None)
+                    .WriteToAsync(httpContext.Response.Body, CancellationToken.None).ConfigureAwait(false);
+                return new FileStreamResult(httpContext.Response.Body, contentType);
             }
             finally
             {
diff --git a/Jellyfin.Api/Helpers/MediaInfoHelper.cs b/Jellyfin.Api/Helpers/MediaInfoHelper.cs
index 3a736d1e8..1207fb513 100644
--- a/Jellyfin.Api/Helpers/MediaInfoHelper.cs
+++ b/Jellyfin.Api/Helpers/MediaInfoHelper.cs
@@ -6,6 +6,7 @@ using System.Threading;
 using System.Threading.Tasks;
 using Jellyfin.Data.Entities;
 using Jellyfin.Data.Enums;
+using MediaBrowser.Common.Extensions;
 using MediaBrowser.Common.Net;
 using MediaBrowser.Controller.Configuration;
 using MediaBrowser.Controller.Devices;
@@ -498,7 +499,7 @@ namespace Jellyfin.Api.Helpers
                     true,
                     true,
                     true,
-                    httpRequest.HttpContext.Connection.RemoteIpAddress.ToString());
+                    httpRequest.HttpContext.GetNormalizedRemoteIp());
             }
             else
             {
diff --git a/Jellyfin.Api/Helpers/RequestHelpers.cs b/Jellyfin.Api/Helpers/RequestHelpers.cs
index fbaa69270..8dcf08af5 100644
--- a/Jellyfin.Api/Helpers/RequestHelpers.cs
+++ b/Jellyfin.Api/Helpers/RequestHelpers.cs
@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Net;
 using Jellyfin.Data.Enums;
+using MediaBrowser.Common.Extensions;
 using MediaBrowser.Controller.Net;
 using MediaBrowser.Controller.Session;
 using MediaBrowser.Model.Querying;
@@ -119,7 +120,7 @@ namespace Jellyfin.Api.Helpers
                 authorization.Version,
                 authorization.DeviceId,
                 authorization.Device,
-                request.HttpContext.Connection.RemoteIpAddress.ToString(),
+                request.HttpContext.GetNormalizedRemoteIp(),
                 user);
 
             if (session == null)
@@ -172,10 +173,5 @@ namespace Jellyfin.Api.Helpers
                 .Select(i => i!.Value)
                 .ToArray();
         }
-
-        internal static IPAddress NormalizeIp(IPAddress ip)
-        {
-            return ip.IsIPv4MappedToIPv6 ? ip.MapToIPv4() : ip;
-        }
     }
 }
diff --git a/Jellyfin.Api/Helpers/StreamingHelpers.cs b/Jellyfin.Api/Helpers/StreamingHelpers.cs
index b12590080..f4ec29bde 100644
--- a/Jellyfin.Api/Helpers/StreamingHelpers.cs
+++ b/Jellyfin.Api/Helpers/StreamingHelpers.cs
@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.IO;
@@ -169,7 +169,7 @@ namespace Jellyfin.Api.Helpers
 
             string? containerInternal = Path.GetExtension(state.RequestedUrl);
 
-            if (string.IsNullOrEmpty(streamingRequest.Container))
+            if (!string.IsNullOrEmpty(streamingRequest.Container))
             {
                 containerInternal = streamingRequest.Container;
             }
diff --git a/Jellyfin.Api/Helpers/TranscodingJobHelper.cs b/Jellyfin.Api/Helpers/TranscodingJobHelper.cs
index 67e450372..64d1227f7 100644
--- a/Jellyfin.Api/Helpers/TranscodingJobHelper.cs
+++ b/Jellyfin.Api/Helpers/TranscodingJobHelper.cs
@@ -504,6 +504,11 @@ namespace Jellyfin.Api.Helpers
                 }
             }
 
+            if (string.IsNullOrEmpty(_mediaEncoder.EncoderPath))
+            {
+                throw new ArgumentException("FFMPEG path not set.");
+            }
+
             var process = new Process
             {
                 StartInfo = new ProcessStartInfo