diff --git a/src/N_m3u8DL-RE/CommandLine/CommandInvoker.cs b/src/N_m3u8DL-RE/CommandLine/CommandInvoker.cs
index 691e80c..da93eb8 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) 20220928")
+            var rootCommand = new RootCommand("N_m3u8DL-RE (Beta version) 20221011")
             {
                 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/SimpleDownloadManager.cs b/src/N_m3u8DL-RE/DownloadManager/SimpleDownloadManager.cs
index 56f77ab..29f18e8 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
                     //手动计算MPEGTS
                     if (finalVtt.MpegtsTimestamp == 0 && vtt.MpegtsTimestamp == 0)
                     {
-                        vtt.MpegtsTimestamp = 90 * (long)(seg.Duration * 1000) * seg.Index;
+                        vtt.MpegtsTimestamp = 90000 * (long)keys.Where(s => s.Index < seg.Index).Sum(s => s.Duration);
                     }
                     if (first)
                     {
diff --git a/src/N_m3u8DL-RE/DownloadManager/SimpleLiveRecordManager2.cs b/src/N_m3u8DL-RE/DownloadManager/SimpleLiveRecordManager2.cs
index cbc93be..3733300 100644
--- a/src/N_m3u8DL-RE/DownloadManager/SimpleLiveRecordManager2.cs
+++ b/src/N_m3u8DL-RE/DownloadManager/SimpleLiveRecordManager2.cs
@@ -322,7 +322,7 @@ namespace N_m3u8DL_RE.DownloadManager
                         //手动计算MPEGTS
                         if (currentVtt.MpegtsTimestamp == 0 && vtt.MpegtsTimestamp == 0)
                         {
-                            vtt.MpegtsTimestamp = 90 * (long)(seg.Duration * 1000) * seg.Index;
+                            vtt.MpegtsTimestamp = 90000 * (long)keys.Where(s => s.Index < seg.Index).Sum(s => s.Duration);
                         }
                         if (firstSub)
                         {