因为需求的原因需要将多个音频(.mp3格式)合并为一个音频

1、在电脑/服务器安装 ffmpeg

brew install ffmpeg

public static Integer combine(String commandFix, List<String> filePaths, String combinePath) {
       try {

           StringBuilder command = new StringBuilder(commandFix + " -i \"concat:");
           for (String path : filePaths) {
               command.append(path).append("|");
           }
           command.append("\" -acodec copy ").append(combinePath).append(" -y");

           logger.info("执行合并音频代码--" + command);

           //拼接ffmpeg命令
           Process process = null;
           Thread.sleep(1000);
           //执行本地命令
           Runtime r = Runtime.getRuntime();

           String[] cmd = new String[]{"sh", "-c", command.toString()};

           process = r.exec(cmd);
           return process.waitFor();
       } catch (Exception e)  {
           logger.error("FFmpeg 执行失败，错误码",e);
           return -1;
       }

    }

参数说明

commandFix:命令 sudo /usr/local/ffmpeg/bin/ffmpeg
filePaths: 文件列表 服务器对应的文件地址 如：/var/www/file/1.mp3
combinePath:合并后文件的路径 /var/www/file/new.mp3