From 707eca6a65112fd4107462b29abb634186237fe4 Mon Sep 17 00:00:00 2001
From: nilaoda <nilaoda@live.com>
Date: Mon, 8 Aug 2022 23:11:10 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BC=98=E5=8C=96ffmpeg=E5=90=88=E5=B9=B6?=
 =?UTF-8?q?=E8=BE=93=E5=87=BA=E5=90=8E=E7=BC=80?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/N_m3u8DL-RE/DownloadManager/SimpleDownloadManager.cs | 3 ++-
 src/N_m3u8DL-RE/Util/MergeUtil.cs                        | 3 +++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/N_m3u8DL-RE/DownloadManager/SimpleDownloadManager.cs b/src/N_m3u8DL-RE/DownloadManager/SimpleDownloadManager.cs
index 80d6226..0306248 100644
--- a/src/N_m3u8DL-RE/DownloadManager/SimpleDownloadManager.cs
+++ b/src/N_m3u8DL-RE/DownloadManager/SimpleDownloadManager.cs
@@ -356,7 +356,8 @@ namespace N_m3u8DL_RE.DownloadManager
                 {
                     var files = FileDic.Values.Select(v => v!.ActualFilePath).OrderBy(s => s).ToArray();
                     Logger.InfoMarkUp(ResString.ffmpegMerge);
-                    mergeSuccess = MergeUtil.MergeByFFmpeg(DownloaderConfig.FFmpegBinaryPath!, files, Path.ChangeExtension(output, null), "mp4");
+                    var ext = streamSpec.MediaType == MediaType.AUDIO ? "m4a" : "mp4";
+                    mergeSuccess = MergeUtil.MergeByFFmpeg(DownloaderConfig.FFmpegBinaryPath!, files, Path.ChangeExtension(output, null), ext);
                 }
             }
 
diff --git a/src/N_m3u8DL-RE/Util/MergeUtil.cs b/src/N_m3u8DL-RE/Util/MergeUtil.cs
index 51b9504..558520b 100644
--- a/src/N_m3u8DL-RE/Util/MergeUtil.cs
+++ b/src/N_m3u8DL-RE/Util/MergeUtil.cs
@@ -85,6 +85,9 @@ namespace N_m3u8DL_RE.Util
                 case ("FLV"):
                     command.Append("\" -map 0  -c copy -y " + (useAACFilter ? "-bsf:a aac_adtstoasc" : "") + " \"" + outputPath + ".flv\"");
                     break;
+                case ("M4A"):
+                    command.Append("\" -map 0  -c copy -y " + (useAACFilter ? "-bsf:a aac_adtstoasc" : "") + " \"" + outputPath + ".m4a\"");
+                    break;
                 case ("TS"):
                     command.Append("\" -map 0  -c copy -y -f mpegts -bsf:v h264_mp4toannexb \"" + outputPath + ".ts\"");
                     break;