diff --git a/src/N_m3u8DL-RE/CommandLine/CommandInvoker.cs b/src/N_m3u8DL-RE/CommandLine/CommandInvoker.cs
index 8af6470..b67c7d2 100644
--- a/src/N_m3u8DL-RE/CommandLine/CommandInvoker.cs
+++ b/src/N_m3u8DL-RE/CommandLine/CommandInvoker.cs
@@ -18,7 +18,7 @@ namespace N_m3u8DL_RE.CommandLine
 {
     internal partial class CommandInvoker
     {
-        public const string VERSION_INFO = "N_m3u8DL-RE (Beta version) 20221117";
+        public const string VERSION_INFO = "N_m3u8DL-RE (Beta version) 20221120";
 
         [GeneratedRegex("((best|worst)\\d*|all)")]
         private static partial Regex ForStrRegex();
diff --git a/src/N_m3u8DL-RE/DownloadManager/SimpleDownloadManager.cs b/src/N_m3u8DL-RE/DownloadManager/SimpleDownloadManager.cs
index d092909..1f0d10c 100644
--- a/src/N_m3u8DL-RE/DownloadManager/SimpleDownloadManager.cs
+++ b/src/N_m3u8DL-RE/DownloadManager/SimpleDownloadManager.cs
@@ -345,7 +345,7 @@ namespace N_m3u8DL_RE.DownloadManager
                     }
                 }
                 //写出字幕
-                var files = FileDic.Values.Select(v => v!.ActualFilePath).OrderBy(s => s).ToArray();
+                var files = FileDic.OrderBy(s => s.Key.Index).Select(s => s.Value).Select(v => v!.ActualFilePath).ToArray();
                 foreach (var item in files) File.Delete(item);
                 FileDic.Clear();
                 var index = 0;
@@ -375,11 +375,11 @@ namespace N_m3u8DL_RE.DownloadManager
                 if (sawVtt)
                 {
                     Logger.WarnMarkUp(ResString.fixingVTTmp4);
-                    var mp4s = FileDic.Values.Select(v => v!.ActualFilePath).Where(p => p.EndsWith(".m4s")).OrderBy(s => s).ToArray();
+                    var mp4s = FileDic.OrderBy(s => s.Key.Index).Select(s => s.Value).Select(v => v!.ActualFilePath).Where(p => p.EndsWith(".m4s")).ToArray();
                     var finalVtt = MP4VttUtil.ExtractSub(mp4s, timescale);
                     //写出字幕
                     var firstKey = FileDic.Keys.First();
-                    var files = FileDic.Values.Select(v => v!.ActualFilePath).OrderBy(s => s).ToArray();
+                    var files = FileDic.OrderBy(s => s.Key.Index).Select(s => s.Value).Select(v => v!.ActualFilePath).ToArray();
                     foreach (var item in files) File.Delete(item);
                     FileDic.Clear();
                     var index = 0;
@@ -405,11 +405,11 @@ namespace N_m3u8DL_RE.DownloadManager
                 && streamSpec.Extension != null && streamSpec.Extension.Contains("ttml"))
             {
                 Logger.WarnMarkUp(ResString.fixingTTML);
-                var mp4s = FileDic.Values.Select(v => v!.ActualFilePath).Where(p => p.EndsWith(".ttml")).OrderBy(s => s).ToArray();
+                var mp4s = FileDic.OrderBy(s => s.Key.Index).Select(s => s.Value).Select(v => v!.ActualFilePath).Where(p => p.EndsWith(".ttml")).ToArray();
                 var finalVtt = MP4TtmlUtil.ExtractFromTTMLs(mp4s, 0);
                 //写出字幕
                 var firstKey = FileDic.Keys.First();
-                var files = FileDic.Values.Select(v => v!.ActualFilePath).OrderBy(s => s).ToArray();
+                var files = FileDic.OrderBy(s => s.Key.Index).Select(s => s.Value).Select(v => v!.ActualFilePath).ToArray();
 
                 //处理图形字幕
                 if (finalVtt.Cues.All(v => v.Payload.StartsWith("Base64::")))
@@ -455,11 +455,11 @@ namespace N_m3u8DL_RE.DownloadManager
                 //var initFile = FileDic.Values.Where(v => Path.GetFileName(v!.ActualFilePath).StartsWith("_init")).FirstOrDefault();
                 //var iniFileBytes = File.ReadAllBytes(initFile!.ActualFilePath);
                 //var sawTtml = MP4TtmlUtil.CheckInit(iniFileBytes);
-                var mp4s = FileDic.Values.Select(v => v!.ActualFilePath).Where(p => p.EndsWith(".m4s")).OrderBy(s => s).ToArray();
+                var mp4s = FileDic.OrderBy(s => s.Key.Index).Select(s => s.Value).Select(v => v!.ActualFilePath).Where(p => p.EndsWith(".m4s")).ToArray();
                 var finalVtt = MP4TtmlUtil.ExtractFromMp4s(mp4s, 0);
                 //写出字幕
                 var firstKey = FileDic.Keys.First();
-                var files = FileDic.Values.Select(v => v!.ActualFilePath).OrderBy(s => s).ToArray();
+                var files = FileDic.OrderBy(s => s.Key.Index).Select(s => s.Value).Select(v => v!.ActualFilePath).ToArray();
 
                 //处理图形字幕
                 if (finalVtt.Cues.All(v => v.Payload.StartsWith("Base64::")))
@@ -503,14 +503,14 @@ namespace N_m3u8DL_RE.DownloadManager
                 if (DownloaderConfig.MyOptions.BinaryMerge || streamSpec.MediaType == MediaType.SUBTITLES)
                 {
                     Logger.InfoMarkUp(ResString.binaryMerge);
-                    var files = FileDic.Values.Select(v => v!.ActualFilePath).OrderBy(s => s).ToArray();
+                    var files = FileDic.OrderBy(s => s.Key.Index).Select(s => s.Value).Select(v => v!.ActualFilePath).ToArray();
                     MergeUtil.CombineMultipleFilesIntoSingleFile(files, output);
                     mergeSuccess = true;
                 }
                 else
                 {
                     //ffmpeg合并
-                    var files = FileDic.Values.Select(v => v!.ActualFilePath).OrderBy(s => s).ToArray();
+                    var files = FileDic.OrderBy(s => s.Key.Index).Select(s => s.Value).Select(v => v!.ActualFilePath).ToArray();
                     Logger.InfoMarkUp(ResString.ffmpegMerge);
                     var ext = streamSpec.MediaType == MediaType.AUDIO ? "m4a" : "mp4";
                     var ffOut = Path.Combine(Path.GetDirectoryName(output)!, Path.GetFileNameWithoutExtension(output) + $".{ext}");
diff --git a/src/N_m3u8DL-RE/DownloadManager/SimpleLiveRecordManager2.cs b/src/N_m3u8DL-RE/DownloadManager/SimpleLiveRecordManager2.cs
index 111857c..ccf634c 100644
--- a/src/N_m3u8DL-RE/DownloadManager/SimpleLiveRecordManager2.cs
+++ b/src/N_m3u8DL-RE/DownloadManager/SimpleLiveRecordManager2.cs
@@ -376,7 +376,7 @@ namespace N_m3u8DL_RE.DownloadManager
                     var (sawVtt, timescale) = MP4VttUtil.CheckInit(iniFileBytes);
                     if (sawVtt)
                     {
-                        var mp4s = FileDic.Values.Select(v => v!.ActualFilePath).Where(p => p.EndsWith(".m4s")).OrderBy(s => s).ToArray();
+                        var mp4s = FileDic.OrderBy(s => s.Key.Index).Select(s => s.Value).Select(v => v!.ActualFilePath).Where(p => p.EndsWith(".m4s")).ToArray();
                         if (firstSub)
                         {
                             currentVtt = MP4VttUtil.ExtractSub(mp4s, timescale);
@@ -394,7 +394,7 @@ namespace N_m3u8DL_RE.DownloadManager
                 if (DownloaderConfig.MyOptions.AutoSubtitleFix && streamSpec.MediaType == Common.Enum.MediaType.SUBTITLES
                     && streamSpec.Extension != null && streamSpec.Extension.Contains("ttml"))
                 {
-                    var mp4s = FileDic.Values.Select(v => v!.ActualFilePath).Where(p => p.EndsWith(".ttml")).OrderBy(s => s).ToArray();
+                    var mp4s = FileDic.OrderBy(s => s.Key.Index).Select(s => s.Value).Select(v => v!.ActualFilePath).Where(p => p.EndsWith(".ttml")).ToArray();
                     if (firstSub)
                     {
                         if (baseTimestamp != 0)
@@ -421,7 +421,7 @@ namespace N_m3u8DL_RE.DownloadManager
                     //var initFile = FileDic.Values.Where(v => Path.GetFileName(v!.ActualFilePath).StartsWith("_init")).FirstOrDefault();
                     //var iniFileBytes = File.ReadAllBytes(initFile!.ActualFilePath);
                     //var sawTtml = MP4TtmlUtil.CheckInit(iniFileBytes);
-                    var mp4s = FileDic.Values.Select(v => v!.ActualFilePath).Where(p => p.EndsWith(".m4s")).OrderBy(s => s).ToArray();
+                    var mp4s = FileDic.OrderBy(s => s.Key.Index).Select(s => s.Value).Select(v => v!.ActualFilePath).Where(p => p.EndsWith(".m4s")).ToArray();
                     if (firstSub)
                     {
                         if (baseTimestamp != 0)
@@ -484,7 +484,7 @@ namespace N_m3u8DL_RE.DownloadManager
                     if (streamSpec.MediaType != MediaType.SUBTITLES)
                     {
                         var initResult = streamSpec.Playlist!.MediaInit != null ? FileDic[streamSpec.Playlist!.MediaInit!]! : null;
-                        var files = FileDic.Where(f => f.Key != streamSpec.Playlist!.MediaInit).Select(f => f.Value).Select(v => v!.ActualFilePath).OrderBy(s => s).ToArray();
+                        var files = FileDic.Where(f => f.Key != streamSpec.Playlist!.MediaInit).OrderBy(s => s.Key.Index).Select(f => f.Value).Select(v => v!.ActualFilePath).ToArray();
                         if (initResult != null && mp4InitFile != "")
                         {
                             //shaka实时解密不需要init文件用于合并，mp4decrpyt需要
@@ -513,7 +513,7 @@ namespace N_m3u8DL_RE.DownloadManager
                     else
                     {
                         var initResult = streamSpec.Playlist!.MediaInit != null ? FileDic[streamSpec.Playlist!.MediaInit!]! : null;
-                        var files = FileDic.Select(f => f.Value).Select(v => v!.ActualFilePath).OrderBy(s => s).ToArray();
+                        var files = FileDic.OrderBy(s => s.Key.Index).Select(f => f.Value).Select(v => v!.ActualFilePath).ToArray();
                         foreach (var inputFilePath in files)
                         {
                             if (!DownloaderConfig.MyOptions.LiveKeepSegments && !Path.GetFileName(inputFilePath).StartsWith("_init"))