支持设置直播获取最新N个分片 `live-take-count` #218

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

@@ -79,6 +79,7 @@ namespace N_m3u8DL_RE.Common.Resource
         public static string cmd_liveRecordLimit { get => GetText("cmd_liveRecordLimit"); }
         public static string cmd_taskStartAt { get => GetText("cmd_taskStartAt"); }
         public static string cmd_liveWaitTime { get => GetText("cmd_liveWaitTime"); }
+        public static string cmd_liveTakeCount { get => GetText("cmd_liveTakeCount"); }
         public static string cmd_liveFixVttByAudio { get => GetText("cmd_liveFixVttByAudio"); }
         public static string cmd_liveRealTimeMerge { get => GetText("cmd_liveRealTimeMerge"); }
         public static string cmd_livePerformAsVod { get => GetText("cmd_livePerformAsVod"); }

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

@@ -346,6 +346,12 @@ namespace N_m3u8DL_RE.Common.Resource
                 zhTW: "手動設置直播列表刷新間隔",
                 enUS: "Manually set the live playlist refresh interval"
             ),
+            ["cmd_liveTakeCount"] = new TextContainer
+            (
+                zhCN: "手动设置录制直播时首次获取分片的数量",
+                zhTW: "手動設置錄製直播時首次獲取分片的數量",
+                enUS: "Manually set the number of segments downloaded for the first time when recording live"
+            ),
             ["cmd_customHLSMethod"] = new TextContainer
             (
                 zhCN: "指定HLS加密方式 (AES_128|AES_128_ECB|CENC|CHACHA20|NONE|SAMPLE_AES|SAMPLE_AES_CTR|UNKNOWN)",

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) 20230628";
+        public const string VERSION_INFO = "N_m3u8DL-RE (Beta version) 20230707";
 
         [GeneratedRegex("((best|worst)\\d*|all)")]
         private static partial Regex ForStrRegex();
@@ -85,6 +85,7 @@ namespace N_m3u8DL_RE.CommandLine
         private readonly static Option<bool> LivePipeMux = new(new string[] { "--live-pipe-mux" }, description: ResString.cmd_livePipeMux, getDefaultValue: () => false);
         private readonly static Option<TimeSpan?> LiveRecordLimit = new(new string[] { "--live-record-limit" }, description: ResString.cmd_liveRecordLimit, parseArgument: ParseLiveLimit) { ArgumentHelpName = "HH:mm:ss" };
         private readonly static Option<int?> LiveWaitTime = new(new string[] { "--live-wait-time" }, description: ResString.cmd_liveWaitTime) { ArgumentHelpName = "SEC" };
+        private readonly static Option<int> LiveTakeCount = new(new string[] { "--live-take-count" }, description: ResString.cmd_liveTakeCount, getDefaultValue: () => 16) { ArgumentHelpName = "NUM" };
         private readonly static Option<bool> LiveFixVttByAudio = new(new string[] { "--live-fix-vtt-by-audio" }, description: ResString.cmd_liveFixVttByAudio, getDefaultValue: () => false);
 
 
@@ -495,6 +496,7 @@ namespace N_m3u8DL_RE.CommandLine
                     CustomProxy = bindingContext.ParseResult.GetValueForOption(CustomProxy),
                     CustomRange = bindingContext.ParseResult.GetValueForOption(CustomRange),
                     LiveWaitTime = bindingContext.ParseResult.GetValueForOption(LiveWaitTime),
+                    LiveTakeCount = bindingContext.ParseResult.GetValueForOption(LiveTakeCount),
                     NoDateInfo = bindingContext.ParseResult.GetValueForOption(NoDateInfo),
                     NoLog = bindingContext.ParseResult.GetValueForOption(NoLog),
                 };
@@ -561,7 +563,7 @@ namespace N_m3u8DL_RE.CommandLine
                 LogLevel, UILanguage, UrlProcessorArgs, Keys, KeyTextFile, DecryptionBinaryPath, UseShakaPackager, MP4RealTimeDecryption,
                 MuxAfterDone,
                 CustomHLSMethod, CustomHLSKey, CustomHLSIv, UseSystemProxy, CustomProxy, CustomRange, TaskStartAt,
-                LivePerformAsVod, LiveRealTimeMerge, LiveKeepSegments, LivePipeMux, LiveFixVttByAudio, LiveRecordLimit, LiveWaitTime,
+                LivePerformAsVod, LiveRealTimeMerge, LiveKeepSegments, LivePipeMux, LiveFixVttByAudio, LiveRecordLimit, LiveWaitTime, LiveTakeCount,
                 MuxImports, VideoFilter, AudioFilter, SubtitleFilter, DropVideoFilter, DropAudioFilter, DropSubtitleFilter, MoreHelp
             };
 

src/N_m3u8DL-RE/CommandLine/MyOption.cs

@@ -220,6 +220,10 @@ namespace N_m3u8DL_RE.CommandLine
         /// See: <see cref="CommandInvoker.LiveWaitTime"/>.
         /// </summary>
         public int? LiveWaitTime { get; set; }
+        /// <summary>
+        /// See: <see cref="CommandInvoker.LiveTakeCount"/>.
+        /// </summary>
+        public int LiveTakeCount { get; set; }
         public MuxOptions MuxOptions { get; set; }
         //public bool LiveWriteHLS { get; set; } = true;
         /// <summary>

src/N_m3u8DL-RE/DownloadManager/SimpleLiveRecordManager2.cs

@@ -790,7 +790,7 @@ namespace N_m3u8DL_RE.DownloadManager
 
         public async Task<bool> StartRecordAsync()
         {
-            var takeLastCount = 15;
+            var takeLastCount = DownloaderConfig.MyOptions.LiveTakeCount;
             ConcurrentDictionary<int, SpeedContainer> SpeedContainerDic = new(); //速度计算
             ConcurrentDictionary<StreamSpec, bool?> Results = new();
             //同步流

src/N_m3u8DL-RE/Util/FilterUtil.cs

@@ -172,7 +172,7 @@ namespace N_m3u8DL_RE.Util
             //取最新的N个分片
             if (selectedSteams.Any(x => x.Playlist!.MediaParts[0].MediaSegments.Count > takeLastCount))
             {
-                var skipCount = selectedSteams.Min(x => x.Playlist!.MediaParts[0].MediaSegments.Count) - takeLastCount;
+                var skipCount = selectedSteams.Min(x => x.Playlist!.MediaParts[0].MediaSegments.Count) - takeLastCount + 1;
                 if (skipCount < 0) skipCount = 0;
                 foreach (var item in selectedSteams)
                 {