支持自定义下载范围; 支持混流时忽略字幕

src/N_m3u8DL-RE.Common/Entity/StreamSpec.cs

@@ -17,6 +17,9 @@ namespace N_m3u8DL_RE.Common.Entity
         public string? Name { get; set; }
         public Choise? Default { get; set; }
 
+        //由于用户选择 被跳过的分片总时长
+        public double? SkippedDuration { get; set; }
+
         //MSS信息
         public MSSData? MSSData { get; set; }
 

src/N_m3u8DL-RE.Common/Entity/WebVttSub.cs

@@ -225,6 +225,22 @@ namespace N_m3u8DL_RE.Common.Entity
             return sb.ToString();
         }
 
+        /// <summary>
+        /// 字幕向前平移指定时间
+        /// </summary>
+        /// <param name="time"></param>
+        public void LeftShiftTime(TimeSpan time)
+        {
+            foreach (var cue in this.Cues)
+            {
+                if (cue.StartTime.TotalSeconds - time.TotalSeconds > 0) cue.StartTime -= time;
+                else cue.StartTime = TimeSpan.FromSeconds(0);
+
+                if (cue.EndTime.TotalSeconds - time.TotalSeconds > 0) cue.EndTime -= time;
+                else cue.EndTime = TimeSpan.FromSeconds(0);
+            }
+        }
+
         public string ToVtt()
         {
             return "WEBVTT" + Environment.NewLine + Environment.NewLine + ToString();

src/N_m3u8DL-RE.Common/Resource/ResString.cs

@@ -10,6 +10,9 @@ namespace N_m3u8DL_RE.Common.Resource
     public class ResString
     {
         public readonly static string ReLiveTs = "<RE_LIVE_TS>";
+        public static string customRangeWarn { get => GetText("customRangeWarn"); }
+        public static string customRangeFound { get => GetText("customRangeFound"); }
+        public static string customRangeInvalid { get => GetText("customRangeInvalid"); }
         public static string autoBinaryMerge { get => GetText("autoBinaryMerge"); }
         public static string autoBinaryMerge2 { get => GetText("autoBinaryMerge2"); }
         public static string autoBinaryMerge3 { get => GetText("autoBinaryMerge3"); }
@@ -41,6 +44,7 @@ namespace N_m3u8DL_RE.Common.Resource
         public static string cmd_selectSubtitle { get => GetText("cmd_selectSubtitle"); }
         public static string cmd_dropSubtitle { get => GetText("cmd_dropSubtitle"); }
         public static string cmd_selectSubtitle_more { get => GetText("cmd_selectSubtitle_more"); }
+        public static string cmd_custom_range { get => GetText("cmd_custom_range"); }
         public static string cmd_customHLSMethod { get => GetText("cmd_customHLSMethod"); }
         public static string cmd_customHLSKey { get => GetText("cmd_customHLSKey"); }
         public static string cmd_customHLSIv { get => GetText("cmd_customHLSIv"); }
@@ -69,6 +73,7 @@ namespace N_m3u8DL_RE.Common.Resource
         public static string cmd_concurrentDownload { get => GetText("cmd_concurrentDownload"); }
         public static string cmd_useSystemProxy { get => GetText("cmd_useSystemProxy"); }
         public static string cmd_customProxy { get => GetText("cmd_customProxy"); }
+        public static string cmd_customRange { get => GetText("cmd_customRange"); }
         public static string cmd_liveKeepSegments { get => GetText("cmd_liveKeepSegments"); }
         public static string cmd_livePipeMux { get => GetText("cmd_livePipeMux"); }
         public static string cmd_liveRecordLimit { get => GetText("cmd_liveRecordLimit"); }

src/N_m3u8DL-RE.Common/Resource/StaticText.cs

@@ -10,6 +10,24 @@ namespace N_m3u8DL_RE.Common.Resource
     {
         public static Dictionary<string, TextContainer> LANG_DIC = new()
         {
+            ["customRangeWarn"] = new TextContainer
+            (
+                zhCN: "请注意，自定义下载范围有时会导致音画不同步",
+                zhTW: "請注意，自定義下載範圍有時會導致音畫不同步",
+                enUS: "Please note that custom range may sometimes result in audio and video being out of sync"
+            ),
+            ["customRangeInvalid"] = new TextContainer
+            (
+                zhCN: "自定义下载范围无效",
+                zhTW: "自定義下載範圍無效",
+                enUS: "User customed range invalid"
+            ),
+            ["customRangeFound"] = new TextContainer
+            (
+                zhCN: "用户自定义下载范围：",
+                zhTW: "用戶自定義下載範圍：",
+                enUS: "User customed range: "
+            ),
             ["processImageSub"] = new TextContainer
             (
                 zhCN: "正在处理图形字幕",
@@ -304,6 +322,12 @@ namespace N_m3u8DL_RE.Common.Resource
                 zhTW: "設置請求代理, 如 http://127.0.0.1:8888",
                 enUS: "Set web request proxy, like http://127.0.0.1:8888"
             ),
+            ["cmd_customRange"] = new TextContainer
+            (
+                zhCN: "仅下载部分分片. 输入 \"--morehelp custom-range\" 以查看详细信息",
+                zhTW: "僅下載部分分片. 輸入 \"--morehelp custom-range\" 以查看詳細訊息",
+                enUS: "Download only part of the segments. Use \"--morehelp custom-range\" for more details"
+            ),
             ["cmd_useSystemProxy"] = new TextContainer
             (
                 zhCN: "使用系统默认代理",
@@ -478,6 +502,39 @@ namespace N_m3u8DL_RE.Common.Resource
                 zhTW: "通過正則表達式去除符合要求的字幕流.",
                 enUS: "Drop subtitle streams by regular expressions."
             ),
+            ["cmd_custom_range"] = new TextContainer
+            (
+                zhCN: "下载点播内容时, 仅下载部分分片.\r\n\r\n" +
+                      "例如: \r\n" +
+                      "# 下载[0,10]共11个分片\r\n" +
+                      "--custom-range 0-10\r\n" +
+                      "# 下载从序号10开始的后续分片\r\n" +
+                      "--custom-range 10-\r\n" +
+                      "# 下载前100个分片\r\n" +
+                      "--custom-range -99\r\n" +
+                      "# 下载第5分钟到20分钟的内容\r\n" +
+                      "--custom-range 05:00-20:00\r\n",
+                zhTW: "下載點播內容時, 僅下載部分分片.\r\n\r\n" +
+                      "例如: \r\n" +
+                      "# 下載[0,10]共11個分片\r\n" +
+                      "--custom-range 0-10\r\n" +
+                      "# 下載從序號10開始的後續分片\r\n" +
+                      "--custom-range 10-\r\n" +
+                      "# 下載前100個分片\r\n" +
+                      "--custom-range -99\r\n" +
+                      "# 下載第5分鐘到20分鐘的內容\r\n" +
+                      "--custom-range 05:00-20:00\r\n",
+                enUS: "Download only part of the segments when downloading vod content.\r\n\r\n" +
+                      "Examples: \r\n" +
+                      "# Download [0,10], a total of 11 segments\r\n" +
+                      "--custom-range 0-10\r\n" +
+                      "# Download subsequent segments starting from index 10\r\n" +
+                      "--custom-range 10-\r\n" +
+                      "# Download the first 100 segments\r\n" +
+                      "--custom-range -99\r\n" +
+                      "# Download content from the 05:00 to 20:00\r\n" +
+                      "--custom-range 05:00-20:00\r\n"
+            ),
             ["cmd_selectSubtitle_more"] = new TextContainer
             (
                 zhCN: "通过正则表达式选择符合要求的字幕流. 参考 --select-video\r\n\r\n" +
@@ -505,6 +562,7 @@ namespace N_m3u8DL_RE.Common.Resource
                       "* format=FORMAT: 指定混流容器 mkv, mp4\r\n" +
                       "* muxer=MUXER: 指定混流程序 ffmpeg, mkvmerge (默认: ffmpeg)\r\n" +
                       "* bin_path=PATH: 指定程序路径 (默认: 自动寻找)\r\n" +
+                      "* skip_sub=BOOL: 是否忽略字幕文件 (默认: false)\r\n" +
                       "* keep=BOOL: 混流完成是否保留文件 true, false (默认: false)\r\n\r\n" +
                       "例如: \r\n" +
                       "# 混流为mp4容器\r\n" +
@@ -517,6 +575,7 @@ namespace N_m3u8DL_RE.Common.Resource
                       "* format=FORMAT: 指定混流容器 mkv, mp4\r\n" +
                       "* muxer=MUXER: 指定混流程序 ffmpeg, mkvmerge (默認: ffmpeg)\r\n" +
                       "* bin_path=PATH: 指定程序路徑 (默認: 自動尋找)\r\n" +
+                      "* skip_sub=BOOL: 是否忽略字幕文件 (默認: false)\r\n" +
                       "* keep=BOOL: 混流完成是否保留文件 true, false (默認: false)\r\n\r\n" +
                       "例如: \r\n" +
                       "# 混流為mp4容器\r\n" +
@@ -529,6 +588,7 @@ namespace N_m3u8DL_RE.Common.Resource
                       "* format=FORMAT: set container. mkv, mp4\r\n" +
                       "* muxer=MUXER: set muxer. ffmpeg, mkvmerge (Default: ffmpeg)\r\n" +
                       "* bin_path=PATH: set binary file path. (Default: auto)\r\n" +
+                      "* skip_sub=BOOL: set whether or not skip subtitle files (Default: false)\r\n" +
                       "* keep=BOOL: set whether or not keep files. true, false (Default: false)\r\n\r\n" +
                       "Examples: \r\n" +
                       "# mux to mp4\r\n" +

src/N_m3u8DL-RE/CommandLine/CommandInvoker.cs

@@ -18,10 +18,12 @@ namespace N_m3u8DL_RE.CommandLine
 {
     internal partial class CommandInvoker
     {
-        public const string VERSION_INFO = "N_m3u8DL-RE (Beta version) 20230618";
+        public const string VERSION_INFO = "N_m3u8DL-RE (Beta version) 20230628";
 
         [GeneratedRegex("((best|worst)\\d*|all)")]
         private static partial Regex ForStrRegex();
+        [GeneratedRegex("(\\d*)-(\\d*)")]
+        private static partial Regex RangeRegex();
 
         private readonly static Argument<string> Input = new(name: "input", description: ResString.cmd_Input);
         private readonly static Option<string?> TmpDir = new(new string[] { "--tmp-dir" }, description: ResString.cmd_tmpDir);
@@ -60,6 +62,9 @@ namespace N_m3u8DL_RE.CommandLine
         private readonly static Option<bool> UseSystemProxy = new(new string[] { "--use-system-proxy" }, description: ResString.cmd_useSystemProxy, getDefaultValue: () => true);
         private readonly static Option<WebProxy?> CustomProxy = new(new string[] { "--custom-proxy" }, description: ResString.cmd_customProxy, parseArgument: ParseProxy) { ArgumentHelpName = "URL" };
 
+        //只下载部分分片
+        private readonly static Option<CustomRange?> CustomRange = new(new string[] { "--custom-range" }, description: ResString.cmd_customRange, parseArgument: ParseCustomRange) { ArgumentHelpName = "RANGE" };
+
 
         //morehelp
         private readonly static Option<string?> MoreHelp = new(new string[] { "--morehelp" }, description: ResString.cmd_moreHelp) { ArgumentHelpName = "OPTION" };
@@ -94,6 +99,55 @@ namespace N_m3u8DL_RE.CommandLine
         private readonly static Option<StreamFilter?> DropAudioFilter = new(new string[] { "-da", "--drop-audio" }, description: ResString.cmd_dropAudio, parseArgument: ParseStreamFilter) { ArgumentHelpName = "OPTIONS" };
         private readonly static Option<StreamFilter?> DropSubtitleFilter = new(new string[] { "-ds", "--drop-subtitle" }, description: ResString.cmd_dropSubtitle, parseArgument: ParseStreamFilter) { ArgumentHelpName = "OPTIONS" };
 
+        /// <summary>
+        /// 解析用户定义的下载范围
+        /// </summary>
+        /// <param name="result"></param>
+        /// <returns></returns>
+        /// <exception cref="ArgumentException"></exception>
+        private static CustomRange? ParseCustomRange(ArgumentResult result)
+        {
+            var input = result.Tokens.First().Value;
+            //支持的种类 0-100; 01:00:00-02:30:00; -300; 300-; 05:00-; -03:00;
+            try
+            {
+                if (string.IsNullOrEmpty(input))
+                    return null;
+
+                var arr = input.Split('-');
+                if (arr.Length != 2)
+                    throw new ArgumentException("Bad format!");
+
+                if (input.Contains(":"))
+                {
+                    return new CustomRange()
+                    {
+                        InputStr = input,
+                        StartSec = arr[0] == "" ? 0 : OtherUtil.ParseDur(arr[0]).TotalSeconds,
+                        EndSec = arr[1] == "" ? double.MaxValue : OtherUtil.ParseDur(arr[1]).TotalSeconds,
+                    };
+                }
+                else if (RangeRegex().IsMatch(input))
+                {
+                    var left = RangeRegex().Match(input).Groups[1].Value;
+                    var right = RangeRegex().Match(input).Groups[2].Value;
+                    return new CustomRange()
+                    {
+                        InputStr = input,
+                        StartSegIndex = left == "" ? 0 : long.Parse(left),
+                        EndSegIndex = right == "" ? long.MaxValue : long.Parse(right),
+                    };
+                }
+
+                throw new ArgumentException("Bad format!");
+            }
+            catch (Exception ex)
+            {
+                result.ErrorMessage = $"error in parse CustomRange: " + ex.Message;
+                return null;
+            }
+        }
+        
         /// <summary>
         /// 解析用户代理
         /// </summary>
@@ -365,6 +419,13 @@ namespace N_m3u8DL_RE.CommandLine
                 result.ErrorMessage = $"keep={keep} not valid";
                 return null;
             }
+            //是否忽略字幕
+            var skipSub = p.GetValue("skip_sub") ?? "false";
+            if (skipSub != "true" && skipSub != "false")
+            {
+                result.ErrorMessage = $"skip_sub={keep} not valid";
+                return null;
+            }
             //冲突检测
             if (muxer == "mkvmerge" && format == "mp4")
             {
@@ -376,6 +437,7 @@ namespace N_m3u8DL_RE.CommandLine
                 UseMkvmerge = muxer == "mkvmerge",
                 MuxToMp4 = format == "mp4",
                 KeepFiles = keep == "true",
+                SkipSubtitle = skipSub == "true",
                 BinPath = bin_path == "auto" ? null : bin_path
             };
         }
@@ -431,6 +493,7 @@ namespace N_m3u8DL_RE.CommandLine
                     LiveFixVttByAudio = bindingContext.ParseResult.GetValueForOption(LiveFixVttByAudio),
                     UseSystemProxy = bindingContext.ParseResult.GetValueForOption(UseSystemProxy),
                     CustomProxy = bindingContext.ParseResult.GetValueForOption(CustomProxy),
+                    CustomRange = bindingContext.ParseResult.GetValueForOption(CustomRange),
                     LiveWaitTime = bindingContext.ParseResult.GetValueForOption(LiveWaitTime),
                     NoDateInfo = bindingContext.ParseResult.GetValueForOption(NoDateInfo),
                     NoLog = bindingContext.ParseResult.GetValueForOption(NoLog),
@@ -458,10 +521,8 @@ namespace N_m3u8DL_RE.CommandLine
                 if (muxAfterDoneValue != null) 
                 {
                     option.MuxAfterDone = true;
-                    option.MuxKeepFiles = muxAfterDoneValue.KeepFiles;
+                    option.MuxOptions = muxAfterDoneValue;
-                    option.MuxToMp4 = muxAfterDoneValue.MuxToMp4;
+                    if (muxAfterDoneValue.UseMkvmerge) option.MkvmergeBinaryPath = muxAfterDoneValue.BinPath;
-                    option.UseMkvmerge = muxAfterDoneValue.UseMkvmerge;
-                    if (option.UseMkvmerge) option.MkvmergeBinaryPath = muxAfterDoneValue.BinPath;
                     else option.FFmpegBinaryPath = muxAfterDoneValue.BinPath;
                 }
 
@@ -485,6 +546,7 @@ namespace N_m3u8DL_RE.CommandLine
                     "select-video" => ResString.cmd_selectVideo_more,
                     "select-audio" => ResString.cmd_selectAudio_more,
                     "select-subtitle" => ResString.cmd_selectSubtitle_more,
+                    "custom-range" => ResString.cmd_custom_range,
                     _ => $"Option=\"{option}\" not found"
                 };
                 Console.WriteLine($"More Help:\r\n\r\n  --{option}\r\n\r\n" + msg);
@@ -498,7 +560,7 @@ namespace N_m3u8DL_RE.CommandLine
                 FFmpegBinaryPath,
                 LogLevel, UILanguage, UrlProcessorArgs, Keys, KeyTextFile, DecryptionBinaryPath, UseShakaPackager, MP4RealTimeDecryption,
                 MuxAfterDone,
-                CustomHLSMethod, CustomHLSKey, CustomHLSIv, UseSystemProxy, CustomProxy, TaskStartAt,
+                CustomHLSMethod, CustomHLSKey, CustomHLSIv, UseSystemProxy, CustomProxy, CustomRange, TaskStartAt,
                 LivePerformAsVod, LiveRealTimeMerge, LiveKeepSegments, LivePipeMux, LiveFixVttByAudio, LiveRecordLimit, LiveWaitTime,
                 MuxImports, VideoFilter, AudioFilter, SubtitleFilter, DropVideoFilter, DropAudioFilter, DropSubtitleFilter, MoreHelp
             };

src/N_m3u8DL-RE/CommandLine/MyOption.cs

@@ -113,14 +113,6 @@ namespace N_m3u8DL_RE.CommandLine
         /// </summary>
         public bool MuxAfterDone { get; set; }
         /// <summary>
-        /// See: <see cref="CommandInvoker.MuxToMp4"/>.
-        /// </summary>
-        public bool MuxToMp4 { get; set; }
-        /// <summary>
-        /// See: <see cref="CommandInvoker.UseMkvmerge"/>.
-        /// </summary>
-        public bool UseMkvmerge { get; set; }
-        /// <summary>
         /// See: <see cref="CommandInvoker.ConcurrentDownload"/>.
         /// </summary>
         public bool ConcurrentDownload { get; set; }
@@ -221,10 +213,14 @@ namespace N_m3u8DL_RE.CommandLine
         /// </summary>
         public WebProxy? CustomProxy { get; set; }
         /// <summary>
+        /// See: <see cref="CommandInvoker.CustomRange"/>.
+        /// </summary>
+        public CustomRange? CustomRange { get; set; }
+        /// <summary>
         /// See: <see cref="CommandInvoker.LiveWaitTime"/>.
         /// </summary>
         public int? LiveWaitTime { get; set; }
-        public bool MuxKeepFiles { get; set; }
+        public MuxOptions MuxOptions { get; set; }
         //public bool LiveWriteHLS { get; set; } = true;
         /// <summary>
         /// See: <see cref="CommandInvoker.LivePipeMux"/>.

src/N_m3u8DL-RE/DownloadManager/SimpleDownloadManager.cs

@@ -126,6 +126,9 @@ namespace N_m3u8DL_RE.DownloadManager
             var currentKID = "";
             var readInfo = false; //是否读取过
 
+            //用户自定义范围导致被跳过的时长 计算字幕偏移使用
+            var skippedDur = streamSpec.SkippedDuration ?? 0d;
+
             Logger.Debug($"dirName: {dirName}; tmpDir: {tmpDir}; saveDir: {saveDir}; saveName: {saveName}");
 
             //创建文件夹
@@ -360,7 +363,7 @@ namespace N_m3u8DL_RE.DownloadManager
                     //手动计算MPEGTS
                     if (finalVtt.MpegtsTimestamp == 0 && vtt.MpegtsTimestamp == 0)
                     {
-                        vtt.MpegtsTimestamp = 90000 * (long)keys.Where(s => s.Index < seg.Index).Sum(s => s.Duration);
+                        vtt.MpegtsTimestamp = 90000 * (long)(skippedDur + keys.Where(s => s.Index < seg.Index).Sum(s => s.Duration));
                     }
                     if (first) { finalVtt = vtt; first = false; }
                     else finalVtt.AddCuesFromOne(vtt);
@@ -371,6 +374,8 @@ namespace N_m3u8DL_RE.DownloadManager
                 FileDic.Clear();
                 var index = 0;
                 var path = Path.Combine(tmpDir, index.ToString(pad) + ".fix.vtt");
+                //设置字幕偏移
+                finalVtt.LeftShiftTime(TimeSpan.FromSeconds(skippedDur));
                 var subContentFixed = finalVtt.ToVtt();
                 //转换字幕格式
                 if (DownloaderConfig.MyOptions.SubtitleFormat != Enum.SubtitleFormat.VTT)
@@ -405,6 +410,8 @@ namespace N_m3u8DL_RE.DownloadManager
                     FileDic.Clear();
                     var index = 0;
                     var path = Path.Combine(tmpDir, index.ToString(pad) + ".fix.vtt");
+                    //设置字幕偏移
+                    finalVtt.LeftShiftTime(TimeSpan.FromSeconds(skippedDur));
                     var subContentFixed = finalVtt.ToVtt();
                     //转换字幕格式
                     if (DownloaderConfig.MyOptions.SubtitleFormat != Enum.SubtitleFormat.VTT)
@@ -435,7 +442,7 @@ namespace N_m3u8DL_RE.DownloadManager
                     //手动计算MPEGTS
                     if (finalVtt.MpegtsTimestamp == 0 && vtt.MpegtsTimestamp == 0)
                     {
-                        vtt.MpegtsTimestamp = 90000 * (long)keys.Where(s => s.Index < seg.Index).Sum(s => s.Duration);
+                        vtt.MpegtsTimestamp = 90000 * (long)(skippedDur + keys.Where(s => s.Index < seg.Index).Sum(s => s.Duration));
                     }
                     if (first) { finalVtt = vtt; first = false; }
                     else finalVtt.AddCuesFromOne(vtt);
@@ -451,6 +458,8 @@ namespace N_m3u8DL_RE.DownloadManager
                 FileDic.Clear();
                 var index = 0;
                 var path = Path.Combine(tmpDir, index.ToString(pad) + ".fix.vtt");
+                //设置字幕偏移
+                finalVtt.LeftShiftTime(TimeSpan.FromSeconds(skippedDur));
                 var subContentFixed = finalVtt.ToVtt();
                 //转换字幕格式
                 if (DownloaderConfig.MyOptions.SubtitleFormat != Enum.SubtitleFormat.VTT)
@@ -485,7 +494,7 @@ namespace N_m3u8DL_RE.DownloadManager
                     //手动计算MPEGTS
                     if (finalVtt.MpegtsTimestamp == 0 && vtt.MpegtsTimestamp == 0)
                     {
-                        vtt.MpegtsTimestamp = 90000 * (long)keys.Where(s => s.Index < seg.Index).Sum(s => s.Duration);
+                        vtt.MpegtsTimestamp = 90000 * (long)(skippedDur + keys.Where(s => s.Index < seg.Index).Sum(s => s.Duration));
                     }
                     if (first) { finalVtt = vtt; first = false; }
                     else finalVtt.AddCuesFromOne(vtt);
@@ -502,6 +511,8 @@ namespace N_m3u8DL_RE.DownloadManager
                 FileDic.Clear();
                 var index = 0;
                 var path = Path.Combine(tmpDir, index.ToString(pad) + ".fix.vtt");
+                //设置字幕偏移
+                finalVtt.LeftShiftTime(TimeSpan.FromSeconds(skippedDur));
                 var subContentFixed = finalVtt.ToVtt();
                 //转换字幕格式
                 if (DownloaderConfig.MyOptions.SubtitleFormat != Enum.SubtitleFormat.VTT)
@@ -595,6 +606,7 @@ namespace N_m3u8DL_RE.DownloadManager
 
             //记录所有文件信息
             if (File.Exists(output))
+            {
                 OutputFiles.Add(new OutputFile()
                 {
                     Index = task.Id,
@@ -604,6 +616,7 @@ namespace N_m3u8DL_RE.DownloadManager
                     Mediainfos = mediaInfos,
                     MediaType = streamSpec.MediaType,
                 });
+            }
 
             return true;
         }
@@ -683,24 +696,29 @@ namespace N_m3u8DL_RE.DownloadManager
             if (success && DownloaderConfig.MyOptions.MuxAfterDone && OutputFiles.Count > 0) 
             {
                 OutputFiles = OutputFiles.OrderBy(o => o.Index).ToList();
+                //是否跳过字幕
+                if (DownloaderConfig.MyOptions.MuxOptions.SkipSubtitle)
+                {
+                    OutputFiles = OutputFiles.Where(o => o.MediaType != MediaType.SUBTITLES).ToList();
+                }
                 if (DownloaderConfig.MyOptions.MuxImports != null)
                 {
                     OutputFiles.AddRange(DownloaderConfig.MyOptions.MuxImports);
                 }
                 OutputFiles.ForEach(f => Logger.WarnMarkUp($"[grey]{Path.GetFileName(f.FilePath).EscapeMarkup()}[/]"));
                 var saveDir = DownloaderConfig.MyOptions.SaveDir ?? Environment.CurrentDirectory;
-                var ext = DownloaderConfig.MyOptions.MuxToMp4 ? ".mp4" : ".mkv";
+                var ext = DownloaderConfig.MyOptions.MuxOptions.MuxToMp4 ? ".mp4" : ".mkv";
                 var dirName = Path.GetFileName(DownloaderConfig.DirPrefix);
                 var outName = $"{dirName}.MUX";
                 var outPath = Path.Combine(saveDir, outName);
                 Logger.WarnMarkUp($"Muxing to [grey]{outName.EscapeMarkup()}{ext}[/]");
                 var result = false;
-                if (DownloaderConfig.MyOptions.UseMkvmerge) result = MergeUtil.MuxInputsByMkvmerge(DownloaderConfig.MyOptions.MkvmergeBinaryPath!, OutputFiles.ToArray(), outPath);
+                if (DownloaderConfig.MyOptions.MuxOptions.UseMkvmerge) result = MergeUtil.MuxInputsByMkvmerge(DownloaderConfig.MyOptions.MkvmergeBinaryPath!, OutputFiles.ToArray(), outPath);
-                else result = MergeUtil.MuxInputsByFFmpeg(DownloaderConfig.MyOptions.FFmpegBinaryPath!, OutputFiles.ToArray(), outPath, DownloaderConfig.MyOptions.MuxToMp4, !DownloaderConfig.MyOptions.NoDateInfo);
+                else result = MergeUtil.MuxInputsByFFmpeg(DownloaderConfig.MyOptions.FFmpegBinaryPath!, OutputFiles.ToArray(), outPath, DownloaderConfig.MyOptions.MuxOptions.MuxToMp4, !DownloaderConfig.MyOptions.NoDateInfo);
                 //完成后删除各轨道文件
                 if (result)
                 {
-                    if (!DownloaderConfig.MyOptions.MuxKeepFiles)
+                    if (!DownloaderConfig.MyOptions.MuxOptions.KeepFiles)
                     {
                         Logger.WarnMarkUp("[grey]Cleaning files...[/]");
                         OutputFiles.ForEach(f => File.Delete(f.FilePath));

src/N_m3u8DL-RE/DownloadManager/SimpleLiveRecordManager2.cs

@@ -892,24 +892,29 @@ namespace N_m3u8DL_RE.DownloadManager
             if (success && DownloaderConfig.MyOptions.MuxAfterDone && OutputFiles.Count > 0)
             {
                 OutputFiles = OutputFiles.OrderBy(o => o.Index).ToList();
+                //是否跳过字幕
+                if (DownloaderConfig.MyOptions.MuxOptions.SkipSubtitle)
+                {
+                    OutputFiles = OutputFiles.Where(o => o.MediaType != MediaType.SUBTITLES).ToList();
+                }
                 if (DownloaderConfig.MyOptions.MuxImports != null)
                 {
                     OutputFiles.AddRange(DownloaderConfig.MyOptions.MuxImports);
                 }
                 OutputFiles.ForEach(f => Logger.WarnMarkUp($"[grey]{Path.GetFileName(f.FilePath).EscapeMarkup()}[/]"));
                 var saveDir = DownloaderConfig.MyOptions.SaveDir ?? Environment.CurrentDirectory;
-                var ext = DownloaderConfig.MyOptions.MuxToMp4 ? ".mp4" : ".mkv";
+                var ext = DownloaderConfig.MyOptions.MuxOptions.MuxToMp4 ? ".mp4" : ".mkv";
                 var dirName = Path.GetFileName(DownloaderConfig.DirPrefix);
                 var outName = $"{dirName}.MUX";
                 var outPath = Path.Combine(saveDir, outName);
                 Logger.WarnMarkUp($"Muxing to [grey]{outName.EscapeMarkup()}{ext}[/]");
                 var result = false;
-                if (DownloaderConfig.MyOptions.UseMkvmerge) result = MergeUtil.MuxInputsByMkvmerge(DownloaderConfig.MyOptions.MkvmergeBinaryPath!, OutputFiles.ToArray(), outPath);
+                if (DownloaderConfig.MyOptions.MuxOptions.UseMkvmerge) result = MergeUtil.MuxInputsByMkvmerge(DownloaderConfig.MyOptions.MkvmergeBinaryPath!, OutputFiles.ToArray(), outPath);
-                else result = MergeUtil.MuxInputsByFFmpeg(DownloaderConfig.MyOptions.FFmpegBinaryPath!, OutputFiles.ToArray(), outPath, DownloaderConfig.MyOptions.MuxToMp4, !DownloaderConfig.MyOptions.NoDateInfo);
+                else result = MergeUtil.MuxInputsByFFmpeg(DownloaderConfig.MyOptions.FFmpegBinaryPath!, OutputFiles.ToArray(), outPath, DownloaderConfig.MyOptions.MuxOptions.MuxToMp4, !DownloaderConfig.MyOptions.NoDateInfo);
                 //完成后删除各轨道文件
                 if (result)
                 {
-                    if (!DownloaderConfig.MyOptions.MuxKeepFiles)
+                    if (!DownloaderConfig.MyOptions.MuxOptions.KeepFiles)
                     {
                         Logger.WarnMarkUp("[grey]Cleaning files...[/]");
                         OutputFiles.ForEach(f => File.Delete(f.FilePath));

src/N_m3u8DL-RE/Entity/CustomRange.cs

@@ -0,0 +1,23 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace N_m3u8DL_RE.Entity
+{
+    public class CustomRange
+    {
+        public required string InputStr { get; set; }
+        public double? StartSec { get; set; }
+        public double? EndSec { get; set; }
+
+        public long? StartSegIndex { get; set; }
+        public long? EndSegIndex { get; set;}
+
+        public override string? ToString()
+        {
+            return $"StartSec: {StartSec}, EndSec: {EndSec}, StartSegIndex: {StartSegIndex}, EndSegIndex: {EndSegIndex}";
+        }
+    }
+}

src/N_m3u8DL-RE/Entity/MuxOptions.cs

@@ -11,6 +11,7 @@ namespace N_m3u8DL_RE.Entity
         public bool UseMkvmerge { get; set; } = false;
         public bool MuxToMp4 { get; set; } = false;
         public bool KeepFiles { get; set; } = false;
+        public bool SkipSubtitle { get; set; } = false;
         public string? BinPath { get; set; }
     }
 }

src/N_m3u8DL-RE/Program.cs

@@ -96,6 +96,7 @@ namespace N_m3u8DL_RE
                 throw new ArgumentException("MuxAfterDone disabled, MuxImports not allowed!");
             }
 
+            //LivePipeMux开启时 LiveRealTimeMerge必须开启
             if (option.LivePipeMux && !option.LiveRealTimeMerge)
             {
                 Logger.WarnMarkUp("LivePipeMux detected, forced enable LiveRealTimeMerge");
@@ -114,7 +115,7 @@ namespace N_m3u8DL_RE
             Logger.Extra($"ffmpeg => {option.FFmpegBinaryPath}");
 
             //预先检查mkvmerge
-            if (option.UseMkvmerge && option.MuxAfterDone)
+            if (option.MuxOptions != null && option.MuxOptions.UseMkvmerge && option.MuxAfterDone)
             {
                 if (option.MkvmergeBinaryPath == null)
                     option.MkvmergeBinaryPath = GlobalUtil.FindExecutable("mkvmerge");
@@ -299,10 +300,13 @@ namespace N_m3u8DL_RE
                 option.BinaryMerge = true;
             }
 
+            //应用用户自定义的分片范围
+            if (!livingFlag)
+                FilterUtil.ApplyCustomRange(selectedStreams, option.CustomRange);
+
             //记录文件
             extractor.RawFiles["meta_selected.json"] = GlobalUtil.ConvertToJson(selectedStreams);
 
-
             Logger.Info(ResString.selectedStream);
             foreach (var item in selectedStreams)
             {
@@ -322,7 +326,6 @@ namespace N_m3u8DL_RE
             Console.ReadKey();
 #endif
 
-
             Logger.InfoMarkUp(ResString.saveName + $"[deepskyblue1]{option.SaveName.EscapeMarkup()}[/]");
 
             //开始MuxAfterDone后自动使用二进制版

src/N_m3u8DL-RE/Util/FilterUtil.cs

@@ -1,5 +1,6 @@
 using N_m3u8DL_RE.Common.Entity;
 using N_m3u8DL_RE.Common.Enum;
+using N_m3u8DL_RE.Common.Log;
 using N_m3u8DL_RE.Common.Resource;
 using N_m3u8DL_RE.Entity;
 using Spectre.Console;
@@ -182,5 +183,49 @@ namespace N_m3u8DL_RE.Util
                 }
             }
         }
+
+        /// <summary>
+        /// 应用用户自定义的分片范围
+        /// </summary>
+        /// <param name="selectedSteams"></param>
+        /// <param name="customRange"></param>
+        public static void ApplyCustomRange(List<StreamSpec> selectedSteams, CustomRange? customRange)
+        {
+            var resultList = selectedSteams.Select(x => 0d).ToList();
+
+            if (customRange == null) return;
+
+            Logger.InfoMarkUp($"{ResString.customRangeFound}[Cyan underline]{customRange.InputStr}[/]");
+            Logger.WarnMarkUp($"[darkorange3_1]{ResString.customRangeWarn}[/]");
+
+            var filteByIndex = customRange.StartSegIndex != null && customRange.EndSegIndex != null;
+            var filteByTime = customRange.StartSec != null && customRange.EndSec != null;
+
+            if (!filteByIndex && !filteByTime)
+            {
+                Logger.ErrorMarkUp(ResString.customRangeInvalid);
+                return;
+            }
+
+            foreach (var stream in selectedSteams)
+            {
+                var skippedDur = 0d;
+                if (stream.Playlist == null) continue;
+                foreach (var part in stream.Playlist.MediaParts)
+                {
+                    var newSegments = new List<MediaSegment>();
+                    if (filteByIndex)
+                        newSegments = part.MediaSegments.Where(seg => seg.Index >= customRange.StartSegIndex && seg.Index <= customRange.EndSegIndex).ToList();
+                    else
+                        newSegments = part.MediaSegments.Where(seg => stream.Playlist.MediaParts.SelectMany(p => p.MediaSegments).Where(x => x.Index < seg.Index).Sum(x => x.Duration) >= customRange.StartSec
+                            && stream.Playlist.MediaParts.SelectMany(p => p.MediaSegments).Where(x => x.Index < seg.Index).Sum(x => x.Duration) <= customRange.EndSec).ToList();
+
+                    if (newSegments.Count > 0)
+                        skippedDur += part.MediaSegments.Where(seg => seg.Index < newSegments.First().Index).Sum(x => x.Duration);
+                    part.MediaSegments = newSegments;
+                }
+                stream.SkippedDuration = skippedDur;
+            }
+        }
     }
 }