diff --git a/src/N_m3u8DL-RE/DownloadManager/SimpleDownloadManager.cs b/src/N_m3u8DL-RE/DownloadManager/SimpleDownloadManager.cs
index bdff980..0b9be68 100644
--- a/src/N_m3u8DL-RE/DownloadManager/SimpleDownloadManager.cs
+++ b/src/N_m3u8DL-RE/DownloadManager/SimpleDownloadManager.cs
@@ -8,6 +8,7 @@ using N_m3u8DL_RE.Downloader;
 using N_m3u8DL_RE.Entity;
 using N_m3u8DL_RE.Util;
 using Spectre.Console;
+using Spectre.Console.Rendering;
 using System.Collections.Concurrent;
 using System.Text;
 
@@ -58,7 +59,7 @@ namespace N_m3u8DL_RE.DownloadManager
             }
         }
 
-        private void ChangeSpecInfo(StreamSpec streamSpec, List<Mediainfo> mediainfos)
+        private void ChangeSpecInfo(StreamSpec streamSpec, List<Mediainfo> mediainfos, ref bool useAACFilter)
         {
             if (!DownloaderConfig.BinaryMerge && mediainfos.Any(m => m.DolbyVison == true))
             {
@@ -66,6 +67,11 @@ namespace N_m3u8DL_RE.DownloadManager
                 Logger.WarnMarkUp($"[darkorange3_1]{ResString.autoBinaryMerge2}[/]");
             }
 
+            if (mediainfos.Where(m => m.Type == "Audio").All(m => m.BaseInfo.Contains("aac")))
+            {
+                useAACFilter = true;
+            }
+
             if (mediainfos.All(m => m.Type == "Audio"))
             {
                 streamSpec.MediaType = MediaType.AUDIO;
@@ -80,6 +86,7 @@ namespace N_m3u8DL_RE.DownloadManager
 
         private async Task<bool> DownloadStreamAsync(StreamSpec streamSpec, ProgressTask task)
         {
+            bool useAACFilter = false; //ffmpeg合并flag
             ConcurrentDictionary<MediaSegment, DownloadResult?> FileDic = new();
 
             var segments = streamSpec.Playlist?.MediaParts.SelectMany(m => m.MediaSegments);
@@ -169,7 +176,7 @@ namespace N_m3u8DL_RE.DownloadManager
                         Logger.WarnMarkUp(ResString.readingInfo);
                         var mediainfos = await MediainfoUtil.ReadInfoAsync(DownloaderConfig.FFmpegBinaryPath!, result.ActualFilePath);
                         mediainfos.ForEach(info => Logger.InfoMarkUp(info.ToStringMarkUp()));
-                        ChangeSpecInfo(streamSpec, mediainfos);
+                        ChangeSpecInfo(streamSpec, mediainfos, ref useAACFilter);
                         readInfo = true;
                     }
                 }
@@ -212,7 +219,7 @@ namespace N_m3u8DL_RE.DownloadManager
                 Logger.WarnMarkUp(ResString.readingInfo);
                 var mediainfos = await MediainfoUtil.ReadInfoAsync(DownloaderConfig.FFmpegBinaryPath!, result!.ActualFilePath);
                 mediainfos.ForEach(info => Logger.InfoMarkUp(info.ToStringMarkUp()));
-                ChangeSpecInfo(streamSpec, mediainfos);
+                ChangeSpecInfo(streamSpec, mediainfos, ref useAACFilter);
                 readInfo = true;
             }
 
@@ -459,7 +466,7 @@ namespace N_m3u8DL_RE.DownloadManager
                     var files = FileDic.Values.Select(v => v!.ActualFilePath).OrderBy(s => s).ToArray();
                     Logger.InfoMarkUp(ResString.ffmpegMerge);
                     var ext = streamSpec.MediaType == MediaType.AUDIO ? "m4a" : "mp4";
-                    mergeSuccess = MergeUtil.MergeByFFmpeg(DownloaderConfig.FFmpegBinaryPath!, files, Path.ChangeExtension(output, null), ext);
+                    mergeSuccess = MergeUtil.MergeByFFmpeg(DownloaderConfig.FFmpegBinaryPath!, files, Path.ChangeExtension(output, null), ext, useAACFilter);
                 }
             }
 
diff --git a/src/N_m3u8DL-RE/Util/MergeUtil.cs b/src/N_m3u8DL-RE/Util/MergeUtil.cs
index 15517b2..8f8bc67 100644
--- a/src/N_m3u8DL-RE/Util/MergeUtil.cs
+++ b/src/N_m3u8DL-RE/Util/MergeUtil.cs
@@ -1,4 +1,6 @@
-using System;
+using N_m3u8DL_RE.Common.Log;
+using Spectre.Console;
+using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
@@ -44,7 +46,7 @@ namespace N_m3u8DL_RE.Util
             }
         }
 
-        public static bool MergeByFFmpeg(string binary, string[] files, string outputPath, string muxFormat, 
+        public static bool MergeByFFmpeg(string binary, string[] files, string outputPath, string muxFormat, bool useAACFilter,
             bool fastStart = false,
             bool writeDate = true, string poster = "", string audioName = "", string title = "",
             string copyright = "", string comment = "", string encodingTool = "", string recTime = "")
@@ -58,7 +60,6 @@ namespace N_m3u8DL_RE.Util
                     Path.GetFileName(outputPath) + "_" + DateTime.Now.ToString("yyyy-MM-dd_HH-mm-ss"));
             }
 
-            bool useAACFilter = true;
             StringBuilder command = new StringBuilder("-loglevel warning -i concat:\"");
             string ddpAudio = string.Empty;
             string addPoster = "-map 1 -c:v:1 copy -disposition:v:1 attached_pic";
@@ -109,7 +110,10 @@ namespace N_m3u8DL_RE.Util
                     break;
             }
 
-            Process.Start(new ProcessStartInfo()
+            Logger.DebugMarkUp($"{binary}: {command}");
+
+            using var p = new Process();
+            p.StartInfo = new ProcessStartInfo()
             {
                 WorkingDirectory = Path.GetDirectoryName(files[0]),
                 FileName = binary,
@@ -117,7 +121,17 @@ namespace N_m3u8DL_RE.Util
                 RedirectStandardOutput = true,
                 RedirectStandardError = true,
                 UseShellExecute = false
-            })!.WaitForExit();
+            };
+            p.ErrorDataReceived += (sendProcess, output) =>
+            {
+                if (!string.IsNullOrEmpty(output.Data))
+                {
+                    Logger.WarnMarkUp($"[grey]{output.Data.EscapeMarkup()}[/]");
+                }
+            };
+            p.Start();
+            p.BeginErrorReadLine();
+            p.WaitForExit();
 
             if (File.Exists($"{outputPath}.{muxFormat}") && new FileInfo($"{outputPath}.{muxFormat}").Length > 0)
                 return true;