ffmpeg合并视频

先下载个ffmpeg

命令行:

ffmpeg -f concat -i filelist.txt -c copy out\new.mp4

filelis.txt与ffmpeg.exe同一目录, 内容如下:

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file 'F:\Download\【日剧_11集全】\1.EP01-1_Av438702220_P1_.mp4' file 'F:\Download\【日剧_11集全】\2.EP01-2_Av438702220_P2_.mp4' file 'F:\Download\【日剧_11集全】\3.EP01-3_Av438702220_P3_.mp4' file 'F:\Download\【日剧_11集全】\4.EP01-4_Av438702220_P4_.mp4' file 'F:\Download\【日剧_11集全】\5.EP01-5_Av438702220_P5_.mp4' file 'F:\Download\【日剧_11集全】\6.EP01-6_Av438702220_P6_.mp4'

如果想创建的视频在out目录下, out目录要自己先创建, ffmpeg不能创建目录. 上面也可以用new.mp4, 拼合的新视频在当前目录.

filelist.txt中的文件名可以用相对路径,  名字或路径中不能包含,(), 即逗号,左括号, 右括号, 不然提示警告拼接不了.

ffmpeg最后输出的路径只能用相对路径, 已试过用绝对路径的, 执行不了.

 

使用C#代码调用ffmpeg, 例子:

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/// <summary>         /// 拼接视频         /// </summary>         /// <param name="files">有序的文件列表</param>         /// <param name="destName">拼接后的名字如out\abc.mp4</param>         private void ConcatVideo(List<string> files, string destName)         {             string dir = Path.GetDirectoryName(files[0]);             if (!Directory.Exists(dir + "\\out"))             {                 Directory.CreateDirectory(dir + "\\out");             }             if (!Directory.Exists(dir + "\\源"))             {                 Directory.CreateDirectory(dir + "\\源");             }             try             {                 StringBuilder sb = new StringBuilder();                 foreach (string file in files)                 {                     sb.Append($"file '{Path.GetFileName(file)}'\r\n");                 }                 File.WriteAllText(dir + "\\filelist.txt", sb.ToString());                 string paras = $"-f concat -i filelist.txt -c copy {destName}";                 string destExe = dir + "\\ffmpeg.exe";                 if(!File.Exists(destExe))                 {                     string exePath = AppDomain.CurrentDomain.BaseDirectory + "ffmpeg.exe";                     File.Copy(exePath, destExe, true);                 }                                 ProcessStartInfo processStartInfo = new ProcessStartInfo();                 processStartInfo.WorkingDirectory = dir;                 processStartInfo.FileName = destExe;                 processStartInfo.WindowStyle = ProcessWindowStyle.Normal;                 processStartInfo.Arguments = paras;                 processStartInfo.UseShellExecute = true;                 Process? p = Process.Start(processStartInfo);                 p?.WaitForExit();                 //处理完整的源文件切到新目录                 foreach(string file in files)                 {                     FileInfo fileInfo= new FileInfo(file);                     fileInfo.MoveTo(dir + "\\源\\" + Path.GetFileName(file), true);                 }             }             catch(Exception ex)             {                 WriteLog(ex.Message);             }         }

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