diff --git a/Jellyfin.Api/Controllers/AudioController.cs b/Jellyfin.Api/Controllers/AudioController.cs
index c620057353..8954c8ef5c 100644
--- a/Jellyfin.Api/Controllers/AudioController.cs
+++ b/Jellyfin.Api/Controllers/AudioController.cs
@@ -307,7 +307,7 @@ public class AudioController : BaseJellyfinApiController
         [FromQuery] int? videoStreamIndex,
         [FromQuery] EncodingContext? context,
         [FromQuery] Dictionary<string, string>? streamOptions,
-        [FromQuery] bool? enableAudioVbrEncoding)
+        [FromQuery] bool enableAudioVbrEncoding = true)
     {
         StreamingRequestDto streamingRequest = new StreamingRequestDto
         {
@@ -359,7 +359,7 @@ public class AudioController : BaseJellyfinApiController
             VideoStreamIndex = videoStreamIndex,
             Context = context ?? EncodingContext.Static,
             StreamOptions = streamOptions,
-            EnableAudioVbrEncoding = enableAudioVbrEncoding ?? true
+            EnableAudioVbrEncoding = enableAudioVbrEncoding
         };
 
         return await _audioHelper.GetAudioStream(_transcodingJobType, streamingRequest).ConfigureAwait(false);
diff --git a/Jellyfin.Api/Controllers/DynamicHlsController.cs b/Jellyfin.Api/Controllers/DynamicHlsController.cs
index a7fc9928e9..429cc542ca 100644
--- a/Jellyfin.Api/Controllers/DynamicHlsController.cs
+++ b/Jellyfin.Api/Controllers/DynamicHlsController.cs
@@ -215,7 +215,7 @@ public class DynamicHlsController : BaseJellyfinApiController
         [FromQuery] int? maxWidth,
         [FromQuery] int? maxHeight,
         [FromQuery] bool? enableSubtitlesInManifest,
-        [FromQuery] bool? enableAudioVbrEncoding)
+        [FromQuery] bool enableAudioVbrEncoding = true)
     {
         VideoRequestDto streamingRequest = new VideoRequestDto
         {
@@ -270,7 +270,7 @@ public class DynamicHlsController : BaseJellyfinApiController
             MaxHeight = maxHeight,
             MaxWidth = maxWidth,
             EnableSubtitlesInManifest = enableSubtitlesInManifest ?? true,
-            EnableAudioVbrEncoding = enableAudioVbrEncoding ?? true
+            EnableAudioVbrEncoding = enableAudioVbrEncoding
         };
 
         // CTS lifecycle is managed internally.
@@ -796,7 +796,7 @@ public class DynamicHlsController : BaseJellyfinApiController
         [FromQuery] int? videoStreamIndex,
         [FromQuery] EncodingContext? context,
         [FromQuery] Dictionary<string, string> streamOptions,
-        [FromQuery] bool? enableAudioVbrEncoding)
+        [FromQuery] bool enableAudioVbrEncoding = true)
     {
         using var cancellationTokenSource = new CancellationTokenSource();
         var streamingRequest = new VideoRequestDto
@@ -850,7 +850,7 @@ public class DynamicHlsController : BaseJellyfinApiController
             VideoStreamIndex = videoStreamIndex,
             Context = context ?? EncodingContext.Streaming,
             StreamOptions = streamOptions,
-            EnableAudioVbrEncoding = enableAudioVbrEncoding ?? true
+            EnableAudioVbrEncoding = enableAudioVbrEncoding
         };
 
         return await GetVariantPlaylistInternal(streamingRequest, cancellationTokenSource)
@@ -965,7 +965,7 @@ public class DynamicHlsController : BaseJellyfinApiController
         [FromQuery] int? videoStreamIndex,
         [FromQuery] EncodingContext? context,
         [FromQuery] Dictionary<string, string> streamOptions,
-        [FromQuery] bool? enableAudioVbrEncoding)
+        [FromQuery] bool enableAudioVbrEncoding = true)
     {
         using var cancellationTokenSource = new CancellationTokenSource();
         var streamingRequest = new StreamingRequestDto
@@ -1017,7 +1017,7 @@ public class DynamicHlsController : BaseJellyfinApiController
             VideoStreamIndex = videoStreamIndex,
             Context = context ?? EncodingContext.Streaming,
             StreamOptions = streamOptions,
-            EnableAudioVbrEncoding = enableAudioVbrEncoding ?? true
+            EnableAudioVbrEncoding = enableAudioVbrEncoding
         };
 
         return await GetVariantPlaylistInternal(streamingRequest, cancellationTokenSource)
@@ -1145,7 +1145,7 @@ public class DynamicHlsController : BaseJellyfinApiController
         [FromQuery] int? videoStreamIndex,
         [FromQuery] EncodingContext? context,
         [FromQuery] Dictionary<string, string> streamOptions,
-        [FromQuery] bool? enableAudioVbrEncoding)
+        [FromQuery] bool enableAudioVbrEncoding = true)
     {
         var streamingRequest = new VideoRequestDto
         {
@@ -1201,7 +1201,7 @@ public class DynamicHlsController : BaseJellyfinApiController
             VideoStreamIndex = videoStreamIndex,
             Context = context ?? EncodingContext.Streaming,
             StreamOptions = streamOptions,
-            EnableAudioVbrEncoding = enableAudioVbrEncoding ?? true
+            EnableAudioVbrEncoding = enableAudioVbrEncoding
         };
 
         return await GetDynamicSegment(streamingRequest, segmentId)
@@ -1327,7 +1327,7 @@ public class DynamicHlsController : BaseJellyfinApiController
         [FromQuery] int? videoStreamIndex,
         [FromQuery] EncodingContext? context,
         [FromQuery] Dictionary<string, string> streamOptions,
-        [FromQuery] bool? enableAudioVbrEncoding)
+        [FromQuery] bool enableAudioVbrEncoding = true)
     {
         var streamingRequest = new StreamingRequestDto
         {
@@ -1381,7 +1381,7 @@ public class DynamicHlsController : BaseJellyfinApiController
             VideoStreamIndex = videoStreamIndex,
             Context = context ?? EncodingContext.Streaming,
             StreamOptions = streamOptions,
-            EnableAudioVbrEncoding = enableAudioVbrEncoding ?? true
+            EnableAudioVbrEncoding = enableAudioVbrEncoding
         };
 
         return await GetDynamicSegment(streamingRequest, segmentId)
diff --git a/Jellyfin.Api/Controllers/UniversalAudioController.cs b/Jellyfin.Api/Controllers/UniversalAudioController.cs
index c858c17ba0..9087945128 100644
--- a/Jellyfin.Api/Controllers/UniversalAudioController.cs
+++ b/Jellyfin.Api/Controllers/UniversalAudioController.cs
@@ -112,7 +112,7 @@ public class UniversalAudioController : BaseJellyfinApiController
         [FromQuery] int? maxAudioSampleRate,
         [FromQuery] int? maxAudioBitDepth,
         [FromQuery] bool? enableRemoteMedia,
-        [FromQuery] bool? enableAudioVbrEncoding,
+        [FromQuery] bool enableAudioVbrEncoding = true,
         [FromQuery] bool breakOnNonKeyFrames = false,
         [FromQuery] bool enableRedirection = true)
     {
@@ -212,7 +212,7 @@ public class UniversalAudioController : BaseJellyfinApiController
                 Context = EncodingContext.Static,
                 StreamOptions = new Dictionary<string, string>(),
                 EnableAdaptiveBitrateStreaming = true,
-                EnableAudioVbrEncoding = enableAudioVbrEncoding ?? true
+                EnableAudioVbrEncoding = enableAudioVbrEncoding
             };
 
             return await _dynamicHlsHelper.GetMasterHlsPlaylist(TranscodingJobType.Hls, dynamicHlsRequestDto, true)
diff --git a/Jellyfin.Api/Controllers/VideosController.cs b/Jellyfin.Api/Controllers/VideosController.cs
index f6050bdf77..7f9608378d 100644
--- a/Jellyfin.Api/Controllers/VideosController.cs
+++ b/Jellyfin.Api/Controllers/VideosController.cs
@@ -365,7 +365,7 @@ public class VideosController : BaseJellyfinApiController
         [FromQuery] int? videoStreamIndex,
         [FromQuery] EncodingContext? context,
         [FromQuery] Dictionary<string, string> streamOptions,
-        [FromQuery] bool? enableAudioVbrEncoding)
+        [FromQuery] bool enableAudioVbrEncoding = true)
     {
         var isHeadRequest = Request.Method == System.Net.WebRequestMethods.Http.Head;
         // CTS lifecycle is managed internally.
@@ -422,7 +422,7 @@ public class VideosController : BaseJellyfinApiController
             VideoStreamIndex = videoStreamIndex,
             Context = context ?? EncodingContext.Streaming,
             StreamOptions = streamOptions,
-            EnableAudioVbrEncoding = enableAudioVbrEncoding ?? true
+            EnableAudioVbrEncoding = enableAudioVbrEncoding
         };
 
         var state = await StreamingHelpers.GetStreamingState(
@@ -606,7 +606,7 @@ public class VideosController : BaseJellyfinApiController
         [FromQuery] int? videoStreamIndex,
         [FromQuery] EncodingContext? context,
         [FromQuery] Dictionary<string, string> streamOptions,
-        [FromQuery] bool? enableAudioVbrEncoding)
+        [FromQuery] bool enableAudioVbrEncoding = true)
     {
         return GetVideoStream(
             itemId,