diff --git a/Jellyfin.Api/Controllers/UniversalAudioController.cs b/Jellyfin.Api/Controllers/UniversalAudioController.cs
index 4c3ef2c7f7..634fca2eb1 100644
--- a/Jellyfin.Api/Controllers/UniversalAudioController.cs
+++ b/Jellyfin.Api/Controllers/UniversalAudioController.cs
@@ -157,7 +157,7 @@ public class UniversalAudioController : BaseJellyfinApiController
         }
 
         var isStatic = mediaSource.SupportsDirectStream;
-        if (!isStatic && mediaSource.TranscodingSubProtocol == MediaStreamProtocol.Hls)
+        if (!isStatic && mediaSource.TranscodingSubProtocol == MediaStreamProtocol.hls)
         {
             // hls segment container can only be mpegts or fmp4 per ffmpeg documentation
             // ffmpeg option -> file extension
@@ -268,7 +268,7 @@ public class UniversalAudioController : BaseJellyfinApiController
                 Context = EncodingContext.Streaming,
                 Container = transcodingContainer ?? "mp3",
                 AudioCodec = audioCodec ?? "mp3",
-                Protocol = transcodingProtocol ?? MediaStreamProtocol.Http,
+                Protocol = transcodingProtocol ?? MediaStreamProtocol.http,
                 BreakOnNonKeyFrames = breakOnNonKeyFrames ?? false,
                 MaxAudioChannels = transcodingAudioChannels?.ToString(CultureInfo.InvariantCulture)
             }
diff --git a/Jellyfin.Data/Enums/MediaStreamProtocol.cs b/Jellyfin.Data/Enums/MediaStreamProtocol.cs
index 965edd6c1d..844dc95c1f 100644
--- a/Jellyfin.Data/Enums/MediaStreamProtocol.cs
+++ b/Jellyfin.Data/Enums/MediaStreamProtocol.cs
@@ -1,20 +1,22 @@
+#pragma warning disable SA1300 // Lowercase required for backwards compat.
 using System.ComponentModel;
 
 namespace Jellyfin.Data.Enums;
 
 /// <summary>
 /// Media streaming protocol.
+/// Lowercase for backwards compatibility.
 /// </summary>
-[DefaultValue(Http)]
+[DefaultValue(http)]
 public enum MediaStreamProtocol
 {
     /// <summary>
     /// HTTP.
     /// </summary>
-    Http = 0,
+    http = 0,
 
     /// <summary>
     /// HTTP Live Streaming.
     /// </summary>
-    Hls = 1
+    hls = 1
 }
diff --git a/MediaBrowser.Model/Dlna/StreamBuilder.cs b/MediaBrowser.Model/Dlna/StreamBuilder.cs
index 7d9449b746..011453e52d 100644
--- a/MediaBrowser.Model/Dlna/StreamBuilder.cs
+++ b/MediaBrowser.Model/Dlna/StreamBuilder.cs
@@ -557,7 +557,7 @@ namespace MediaBrowser.Model.Dlna
         private static void SetStreamInfoOptionsFromDirectPlayProfile(MediaOptions options, MediaSourceInfo item, StreamInfo playlistItem, DirectPlayProfile? directPlayProfile)
         {
             var container = NormalizeMediaSourceFormatIntoSingleContainer(item.Container, options.Profile, DlnaProfileType.Video, directPlayProfile);
-            var protocol = MediaStreamProtocol.Http;
+            var protocol = MediaStreamProtocol.http;
 
             item.TranscodingContainer = container;
             item.TranscodingSubProtocol = protocol;
@@ -648,7 +648,7 @@ namespace MediaBrowser.Model.Dlna
 
                     if (directPlay == PlayMethod.DirectPlay)
                     {
-                        playlistItem.SubProtocol = MediaStreamProtocol.Http;
+                        playlistItem.SubProtocol = MediaStreamProtocol.http;
 
                         var audioStreamIndex = directPlayInfo.AudioStreamIndex ?? audioStream?.Index;
                         if (audioStreamIndex.HasValue)
@@ -803,7 +803,7 @@ namespace MediaBrowser.Model.Dlna
             var videoCodecs = ContainerProfile.SplitValue(videoCodec);
 
             // Enforce HLS video codec restrictions
-            if (playlistItem.SubProtocol == MediaStreamProtocol.Hls)
+            if (playlistItem.SubProtocol == MediaStreamProtocol.hls)
             {
                 videoCodecs = videoCodecs.Where(codec => _supportedHlsVideoCodecs.Contains(codec)).ToArray();
             }
@@ -840,7 +840,7 @@ namespace MediaBrowser.Model.Dlna
             var audioCodecs = ContainerProfile.SplitValue(audioCodec);
 
             // Enforce HLS audio codec restrictions
-            if (playlistItem.SubProtocol == MediaStreamProtocol.Hls)
+            if (playlistItem.SubProtocol == MediaStreamProtocol.hls)
             {
                 if (string.Equals(playlistItem.Container, "mp4", StringComparison.OrdinalIgnoreCase))
                 {
@@ -1360,7 +1360,7 @@ namespace MediaBrowser.Model.Dlna
             string? outputContainer,
             MediaStreamProtocol? transcodingSubProtocol)
         {
-            if (!subtitleStream.IsExternal && (playMethod != PlayMethod.Transcode || transcodingSubProtocol != MediaStreamProtocol.Hls))
+            if (!subtitleStream.IsExternal && (playMethod != PlayMethod.Transcode || transcodingSubProtocol != MediaStreamProtocol.hls))
             {
                 // Look for supported embedded subs of the same format
                 foreach (var profile in subtitleProfiles)
diff --git a/MediaBrowser.Model/Dlna/StreamInfo.cs b/MediaBrowser.Model/Dlna/StreamInfo.cs
index cd6d34be2e..75e5b6d180 100644
--- a/MediaBrowser.Model/Dlna/StreamInfo.cs
+++ b/MediaBrowser.Model/Dlna/StreamInfo.cs
@@ -670,7 +670,7 @@ namespace MediaBrowser.Model.Dlna
 
             if (MediaType == DlnaProfileType.Audio)
             {
-                if (SubProtocol == MediaStreamProtocol.Hls)
+                if (SubProtocol == MediaStreamProtocol.hls)
                 {
                     return string.Format(CultureInfo.InvariantCulture, "{0}/audio/{1}/master.m3u8?{2}", baseUrl, ItemId, queryString);
                 }
@@ -678,7 +678,7 @@ namespace MediaBrowser.Model.Dlna
                 return string.Format(CultureInfo.InvariantCulture, "{0}/audio/{1}/stream{2}?{3}", baseUrl, ItemId, extension, queryString);
             }
 
-            if (SubProtocol == MediaStreamProtocol.Hls)
+            if (SubProtocol == MediaStreamProtocol.hls)
             {
                 return string.Format(CultureInfo.InvariantCulture, "{0}/videos/{1}/master.m3u8?{2}", baseUrl, ItemId, queryString);
             }
@@ -716,7 +716,7 @@ namespace MediaBrowser.Model.Dlna
 
             long startPositionTicks = item.StartPositionTicks;
 
-            if (item.SubProtocol == MediaStreamProtocol.Hls)
+            if (item.SubProtocol == MediaStreamProtocol.hls)
             {
                 list.Add(new NameValuePair("StartTimeTicks", string.Empty));
             }
@@ -778,7 +778,7 @@ namespace MediaBrowser.Model.Dlna
 
             list.Add(new NameValuePair("SubtitleCodec", item.SubtitleStreamIndex.HasValue && item.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Embed ? subtitleCodecs : string.Empty));
 
-            if (item.SubProtocol == MediaStreamProtocol.Hls)
+            if (item.SubProtocol == MediaStreamProtocol.hls)
             {
                 list.Add(new NameValuePair("SegmentContainer", item.Container ?? string.Empty));
 
@@ -829,7 +829,7 @@ namespace MediaBrowser.Model.Dlna
             var list = new List<SubtitleStreamInfo>();
 
             // HLS will preserve timestamps so we can just grab the full subtitle stream
-            long startPositionTicks = SubProtocol == MediaStreamProtocol.Hls
+            long startPositionTicks = SubProtocol == MediaStreamProtocol.hls
                 ? 0
                 : (PlayMethod == PlayMethod.Transcode && !CopyTimestamps ? StartPositionTicks : 0);
 
diff --git a/MediaBrowser.Model/Dlna/TranscodingProfile.cs b/MediaBrowser.Model/Dlna/TranscodingProfile.cs
index 8f4f3e2f86..891448c664 100644
--- a/MediaBrowser.Model/Dlna/TranscodingProfile.cs
+++ b/MediaBrowser.Model/Dlna/TranscodingProfile.cs
@@ -27,7 +27,7 @@ namespace MediaBrowser.Model.Dlna
         public string AudioCodec { get; set; } = string.Empty;
 
         [XmlAttribute("protocol")]
-        public MediaStreamProtocol Protocol { get; set; } = MediaStreamProtocol.Http;
+        public MediaStreamProtocol Protocol { get; set; } = MediaStreamProtocol.http;
 
         [DefaultValue(false)]
         [XmlAttribute("estimateContentLength")]
diff --git a/tests/Jellyfin.Extensions.Tests/Json/Converters/JsonDefaultStringEnumConverterTests.cs b/tests/Jellyfin.Extensions.Tests/Json/Converters/JsonDefaultStringEnumConverterTests.cs
index 4fd9fd290e..5d86d6baec 100644
--- a/tests/Jellyfin.Extensions.Tests/Json/Converters/JsonDefaultStringEnumConverterTests.cs
+++ b/tests/Jellyfin.Extensions.Tests/Json/Converters/JsonDefaultStringEnumConverterTests.cs
@@ -15,9 +15,9 @@ public class JsonDefaultStringEnumConverterTests
     /// <param name="input">The input string.</param>
     /// <param name="output">The expected enum value.</param>
     [Theory]
-    [InlineData("\"\"", MediaStreamProtocol.Http)]
-    [InlineData("\"Http\"", MediaStreamProtocol.Http)]
-    [InlineData("\"Hls\"", MediaStreamProtocol.Hls)]
+    [InlineData("\"\"", MediaStreamProtocol.http)]
+    [InlineData("\"Http\"", MediaStreamProtocol.http)]
+    [InlineData("\"Hls\"", MediaStreamProtocol.hls)]
     public void Deserialize_Enum_Direct(string input, MediaStreamProtocol output)
     {
         var value = JsonSerializer.Deserialize<MediaStreamProtocol>(input, _jsonOptions);
@@ -30,10 +30,10 @@ public class JsonDefaultStringEnumConverterTests
     /// <param name="input">The input string.</param>
     /// <param name="output">The expected enum value.</param>
     [Theory]
-    [InlineData(null, MediaStreamProtocol.Http)]
-    [InlineData("\"\"", MediaStreamProtocol.Http)]
-    [InlineData("\"Http\"", MediaStreamProtocol.Http)]
-    [InlineData("\"Hls\"", MediaStreamProtocol.Hls)]
+    [InlineData(null, MediaStreamProtocol.http)]
+    [InlineData("\"\"", MediaStreamProtocol.http)]
+    [InlineData("\"Http\"", MediaStreamProtocol.http)]
+    [InlineData("\"Hls\"", MediaStreamProtocol.hls)]
     public void Deserialize_Enum(string? input, MediaStreamProtocol output)
     {
         input ??= "null";
@@ -51,9 +51,9 @@ public class JsonDefaultStringEnumConverterTests
     /// <param name="output">The expected enum value.</param>
     [Theory]
     [InlineData(null, null)]
-    [InlineData("\"\"", MediaStreamProtocol.Http)]
-    [InlineData("\"Http\"", MediaStreamProtocol.Http)]
-    [InlineData("\"Hls\"", MediaStreamProtocol.Hls)]
+    [InlineData("\"\"", MediaStreamProtocol.http)]
+    [InlineData("\"Http\"", MediaStreamProtocol.http)]
+    [InlineData("\"Hls\"", MediaStreamProtocol.hls)]
     public void Deserialize_Enum_Nullable(string? input, MediaStreamProtocol? output)
     {
         input ??= "null";
@@ -69,8 +69,8 @@ public class JsonDefaultStringEnumConverterTests
     /// <param name="input">Input enum.</param>
     /// <param name="output">Output enum.</param>
     [Theory]
-    [InlineData(MediaStreamProtocol.Http, MediaStreamProtocol.Http)]
-    [InlineData(MediaStreamProtocol.Hls, MediaStreamProtocol.Hls)]
+    [InlineData(MediaStreamProtocol.http, MediaStreamProtocol.http)]
+    [InlineData(MediaStreamProtocol.hls, MediaStreamProtocol.hls)]
     public void Enum_RoundTrip(MediaStreamProtocol input, MediaStreamProtocol output)
     {
         var inputObj = new TestClass { EnumValue = input };
@@ -87,8 +87,8 @@ public class JsonDefaultStringEnumConverterTests
     /// <param name="input">Input enum.</param>
     /// <param name="output">Output enum.</param>
     [Theory]
-    [InlineData(MediaStreamProtocol.Http, MediaStreamProtocol.Http)]
-    [InlineData(MediaStreamProtocol.Hls, MediaStreamProtocol.Hls)]
+    [InlineData(MediaStreamProtocol.http, MediaStreamProtocol.http)]
+    [InlineData(MediaStreamProtocol.hls, MediaStreamProtocol.hls)]
     [InlineData(null, null)]
     public void Enum_RoundTrip_Nullable(MediaStreamProtocol? input, MediaStreamProtocol? output)
     {
diff --git a/tests/Jellyfin.Model.Tests/Dlna/StreamBuilderTests.cs b/tests/Jellyfin.Model.Tests/Dlna/StreamBuilderTests.cs
index 183997fdbf..6d88dbb8ef 100644
--- a/tests/Jellyfin.Model.Tests/Dlna/StreamBuilderTests.cs
+++ b/tests/Jellyfin.Model.Tests/Dlna/StreamBuilderTests.cs
@@ -389,21 +389,21 @@ namespace Jellyfin.Model.Tests
                     // Assert.Equal("webm", val.Container);
                     Assert.Equal(streamInfo.Container, uri.Extension);
                     Assert.Equal("stream", uri.Filename);
-                    Assert.Equal(MediaStreamProtocol.Http, streamInfo.SubProtocol);
+                    Assert.Equal(MediaStreamProtocol.http, streamInfo.SubProtocol);
                 }
                 else if (transcodeProtocol.Equals("HLS.mp4", StringComparison.Ordinal))
                 {
                     Assert.Equal("mp4", streamInfo.Container);
                     Assert.Equal("m3u8", uri.Extension);
                     Assert.Equal("master", uri.Filename);
-                    Assert.Equal(MediaStreamProtocol.Hls, streamInfo.SubProtocol);
+                    Assert.Equal(MediaStreamProtocol.hls, streamInfo.SubProtocol);
                 }
                 else
                 {
                     Assert.Equal("ts", streamInfo.Container);
                     Assert.Equal("m3u8", uri.Extension);
                     Assert.Equal("master", uri.Filename);
-                    Assert.Equal(MediaStreamProtocol.Hls, streamInfo.SubProtocol);
+                    Assert.Equal(MediaStreamProtocol.hls, streamInfo.SubProtocol);
                 }
 
                 // Full transcode
@@ -489,7 +489,7 @@ namespace Jellyfin.Model.Tests
             }
             else if (playMethod is null)
             {
-                Assert.Equal(MediaStreamProtocol.Http, streamInfo.SubProtocol);
+                Assert.Equal(MediaStreamProtocol.http, streamInfo.SubProtocol);
                 Assert.Equal("stream", uri.Filename);
 
                 Assert.False(streamInfo.EstimateContentLength);