diff --git a/src/N_m3u8DL-RE/CommandLine/CommandInvoker.cs b/src/N_m3u8DL-RE/CommandLine/CommandInvoker.cs
index 3cee7f0..dad5a0c 100644
--- a/src/N_m3u8DL-RE/CommandLine/CommandInvoker.cs
+++ b/src/N_m3u8DL-RE/CommandLine/CommandInvoker.cs
@@ -433,7 +433,7 @@ namespace N_m3u8DL_RE.CommandLine
                 Environment.Exit(0);
             }
 
-            var rootCommand = new RootCommand("N_m3u8DL-RE (Beta version) 20221017")
+            var rootCommand = new RootCommand("N_m3u8DL-RE (Beta version) 20221023")
             {
                 Input, TmpDir, SaveDir, SaveName, BaseUrl, ThreadCount, DownloadRetryCount, AutoSelect, SkipMerge, SkipDownload, CheckSegmentsCount,
                 BinaryMerge, DelAfterDone, WriteMetaJson, AppendUrlParams, ConcurrentDownload, Headers, /**SavePattern,**/ SubOnly, SubtitleFormat, AutoSubtitleFix,
diff --git a/src/N_m3u8DL-RE/DownloadManager/SimpleLiveRecordManager2.cs b/src/N_m3u8DL-RE/DownloadManager/SimpleLiveRecordManager2.cs
index 8ff7360..c6bee1f 100644
--- a/src/N_m3u8DL-RE/DownloadManager/SimpleLiveRecordManager2.cs
+++ b/src/N_m3u8DL-RE/DownloadManager/SimpleLiveRecordManager2.cs
@@ -129,11 +129,28 @@ namespace N_m3u8DL_RE.DownloadManager
 
             if (mediainfos.All(m => m.Type == "Audio"))
             {
+                var lastKey = streamSpec.ToShortString();
                 streamSpec.MediaType = MediaType.AUDIO;
+                var newKey = streamSpec.ToShortString();
+
+                //需要同步修改Dictionary中的Key
+                if (LastFileNameDic.Remove(lastKey, out var lastValue1))
+                    LastFileNameDic[newKey] = lastValue1!;
+                if (DateTimeDic.Remove(lastKey, out var lastValue2))
+                    DateTimeDic[newKey] = lastValue2;
             }
             else if (mediainfos.All(m => m.Type == "Subtitle"))
             {
+                var lastKey = streamSpec.ToShortString();
                 streamSpec.MediaType = MediaType.SUBTITLES;
+                var newKey = streamSpec.ToShortString();
+
+                //需要同步修改Dictionary中的Key
+                if (LastFileNameDic.Remove(lastKey, out var lastValue1))
+                    LastFileNameDic[newKey] = lastValue1!;
+                if (DateTimeDic.Remove(lastKey, out var lastValue2))
+                    DateTimeDic[newKey] = lastValue2;
+
                 if (streamSpec.Extension == null || streamSpec.Extension == "ts")
                     streamSpec.Extension = "vtt";
             }