diff --git a/AudioNodes/Nodes/ConvertFlowElements/ConvertNode.cs b/AudioNodes/Nodes/ConvertFlowElements/ConvertNode.cs
index 852edc83..9b7da153 100644
--- a/AudioNodes/Nodes/ConvertFlowElements/ConvertNode.cs
+++ b/AudioNodes/Nodes/ConvertFlowElements/ConvertNode.cs
@@ -109,6 +109,11 @@ namespace FileFlows.AudioNodes
                     "-ab",
                     (bitrate == -1 ? GetSourceBitrate(args).ToString() : bitrate + "k")
                 });
+                if (Codec == "aac" && HighEfficiency)
+                {
+                    extension = "m4a";
+                    ffArgs.AddRange(new[] { "-profile:a", "aac_he_v2" });
+                }
             }
 
             if (SampleRate > 0)
diff --git a/AudioNodes/Tests/AudioTestBase.cs b/AudioNodes/Tests/AudioTestBase.cs
index a33569ed..8006e179 100644
--- a/AudioNodes/Tests/AudioTestBase.cs
+++ b/AudioNodes/Tests/AudioTestBase.cs
@@ -9,7 +9,7 @@ public abstract class AudioTestBase : TestBase
 {
     protected NodeParameters GetNodeParameters(string file, bool isDirectory = false)
     {
-        var args = new FileFlows.Plugin.NodeParameters(file, Logger, isDirectory, string.Empty, new LocalFileService());
+        var args = new NodeParameters(file, Logger, isDirectory, string.Empty, new LocalFileService());
         
         args.GetToolPathActual = (string tool) =>
         {
diff --git a/AudioNodes/Tests/ConvertTests.cs b/AudioNodes/Tests/ConvertTests.cs
index 5401ef60..650cd0e9 100644
--- a/AudioNodes/Tests/ConvertTests.cs
+++ b/AudioNodes/Tests/ConvertTests.cs
@@ -112,6 +112,23 @@ public class ConvertTests :  AudioTestBase
     }
 
 
+    [TestMethod]
+    public void Convert_AacHighEfficient()
+    {
+        var args = GetNodeParameters(TestFile_Mp3);
+        var af = new AudioFile();
+        af.PreExecute(args);
+        af.Execute(args); // need to read the Audio info and set it
+        
+        ConvertToAAC ele = new();
+        ele.HighEfficiency = true;
+        ele.Bitrate = 192;
+        ele.PreExecute(args);
+        int output = ele.Execute(args);
+
+        Assert.AreEqual(1, output);
+    }
+    
     [TestMethod]
     public void Convert_Mp3ToMp3_Bitrate()
     {
diff --git a/AudioNodes/Tests/EmbedArtworkTests.cs b/AudioNodes/Tests/EmbedArtworkTests.cs
index 9520c6a6..d4b205b5 100644
--- a/AudioNodes/Tests/EmbedArtworkTests.cs
+++ b/AudioNodes/Tests/EmbedArtworkTests.cs
@@ -78,7 +78,6 @@ public class EmbedArtworkTests : AudioTestBase
         var result = convertNode.Execute(args);
         var log = Logger.ToString();
         Assert.AreEqual(1, result);
-        Logger.Clear();
         
         var ele = new EmbedArtwork();
         var output = ele.Execute(args);
diff --git a/AudioNodes/Tests/TestLogger.cs b/AudioNodes/Tests/TestLogger.cs
index 919a0ca9..5be157f0 100644
--- a/AudioNodes/Tests/TestLogger.cs
+++ b/AudioNodes/Tests/TestLogger.cs
@@ -1,67 +1,95 @@
 #if(DEBUG)
 
-namespace FileFlows.AudioNodes.Tests
+using FileFlows.Plugin;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FileFlows.AudioNodes.Tests;
+    
+/// <summary>
+/// A logger for tests that stores the logs in memory
+/// </summary>
+public class TestLogger : ILogger
 {
-    using FileFlows.Plugin;
-    using System;
-    using System.Collections.Generic;
-    using System.Linq;
-    using System.Text;
-    using System.Threading.Tasks;
+    private readonly List<string> Messages = new();
 
-    internal class TestLogger : ILogger
+    /// <summary>
+    /// Writes an information log message
+    /// </summary>
+    /// <param name="args">the log parameters</param>
+    public void ILog(params object[] args)
+        => Log(LogType.Info, args);
+
+    /// <summary>
+    /// Writes an debug log message
+    /// </summary>
+    /// <param name="args">the log parameters</param>
+    public void DLog(params object[] args)
+        => Log(LogType.Debug, args);
+
+    /// <summary>
+    /// Writes an warning log message
+    /// </summary>
+    /// <param name="args">the log parameters</param>
+    public void WLog(params object[] args)
+        => Log(LogType.Warning, args);
+
+    /// <summary>
+    /// Writes an error log message
+    /// </summary>
+    /// <param name="args">the log parameters</param>
+    public void ELog(params object[] args)
+        => Log(LogType.Error, args);
+
+    /// <summary>
+    /// Gets the tail of the log
+    /// </summary>
+    /// <param name="length">the number of messages to get</param>
+    public string GetTail(int length = 50)
     {
-        private List<string> Messages = new List<string>();
-
-        public void DLog(params object[] args) => Log("DBUG", args);
-
-        public void ELog(params object[] args) => Log("ERRR", args);
-
-        public void ILog(params object[] args) => Log("INFO", args);
-
-        public void WLog(params object[] args) => Log("WARN", args);
-
-        private void Log(string type, object[] args)
-        {
-            if (args == null || args.Length == 0)
-                return;
-            string message = type + " -> " +
-                string.Join(", ", args.Select(x =>
-                x == null ? "null" :
-                x.GetType().IsPrimitive || x is string ? x.ToString() :
-                System.Text.Json.JsonSerializer.Serialize(x)));
-            Messages.Add(message);
-        }
-
-        public bool Contains(string message)
-        {
-            if (string.IsNullOrWhiteSpace(message))
-                return false;
-
-            string log = string.Join(Environment.NewLine, Messages);
-            return log.Contains(message);
-        }
-
-        public override string ToString()
-        {
-            return String.Join(Environment.NewLine, this.Messages.ToArray());
-        }
-
-        public string GetTail(int length = 50)
-        {
-            if (length <= 0)
-                length = 50;
-            if (Messages.Count <= length)
-                return string.Join(Environment.NewLine, Messages);
-            return string.Join(Environment.NewLine, Messages.TakeLast(length));
-        }
-
-        /// <summary>
-        /// Clears the log
-        /// </summary>
-        public void Clear()
-            => Messages.Clear();
+        if (Messages.Count <= length)
+            return string.Join(Environment.NewLine, Messages);
+        return string.Join(Environment.NewLine, Messages.TakeLast(50));
     }
+
+    /// <summary>
+    /// Logs a message
+    /// </summary>
+    /// <param name="type">the type of log to record</param>
+    /// <param name="args">the arguments of the message</param>
+    private void Log(LogType type, params object[] args)
+    {
+        string message = type + " -> " + string.Join(", ", args.Select(x =>
+            x == null ? "null" :
+            x.GetType().IsPrimitive ? x.ToString() :
+            x is string ? x.ToString() :
+            System.Text.Json.JsonSerializer.Serialize(x)));
+        Writer?.Invoke(message);
+        Messages.Add(message);
+    }
+
+    /// <summary>
+    /// Gets or sets an optional writer
+    /// </summary>
+    public Action<string> Writer { get; set; }
+
+    /// <summary>
+    /// Returns the entire log as a string
+    /// </summary>
+    /// <returns>the entire log</returns>
+    public override string ToString()
+        => string.Join(Environment.NewLine, Messages);
+
+    /// <summary>
+    /// Checks if the log contains the text
+    /// </summary>
+    /// <param name="text">the text to check for</param>
+    /// <returns>true if it contains it, otherwise false</returns>
+    public bool Contains(string text)
+        => Messages.Any(x => x.Contains(text));
 }
 
 #endif
\ No newline at end of file
diff --git a/AudioNodes/Tests/_LocalFileService.cs b/AudioNodes/Tests/_LocalFileService.cs
index 43a20d62..e09fee2c 100644
--- a/AudioNodes/Tests/_LocalFileService.cs
+++ b/AudioNodes/Tests/_LocalFileService.cs
@@ -367,7 +367,7 @@ public class LocalFileService : IFileService
 
     public Result<long> DirectorySize(string path)
     {
-        throw new NotImplementedException();
+        return 0;
     }
 
     public Result<bool> SetCreationTimeUtc(string path, DateTime date)
diff --git a/AudioNodes/Tests/_TestBase.cs b/AudioNodes/Tests/_TestBase.cs
index cffa168e..d960ae90 100644
--- a/AudioNodes/Tests/_TestBase.cs
+++ b/AudioNodes/Tests/_TestBase.cs
@@ -39,6 +39,7 @@ public abstract class TestBase
     [TestInitialize]
     public void TestInitialize()
     {
+        Logger.Writer = (msg) => TestContext.WriteLine(msg);
         this.TestPath = this.TestPath?.EmptyAsNull() ?? (IsLinux ? "~/src/ff-files/test-files/audio" : @"d:\audio\testfiles");
         this.TempPath = this.TempPath?.EmptyAsNull() ?? (IsLinux ? "~/src/ff-files/temp" : @"d:\audio\temp");
         this.FfmpegPath = this.FfmpegPath?.EmptyAsNull() ?? (IsLinux ? "/usr/local/bin/ffmpeg" :  @"C:\utils\ffmpeg\ffmpeg.exe");
diff --git a/FileFlows.Plugin.dll b/FileFlows.Plugin.dll
index 73d037fe..8f56f74c 100644
Binary files a/FileFlows.Plugin.dll and b/FileFlows.Plugin.dll differ
diff --git a/FileFlows.Plugin.pdb b/FileFlows.Plugin.pdb
index 9387b8c8..cbcff748 100644
Binary files a/FileFlows.Plugin.pdb and b/FileFlows.Plugin.pdb differ