[游戏开发]java ProcessBuilder 调用命令报错异常CreateProcess error=2

ArrayList<String> convert = new ArrayList<String>();
convert.add("ffmpeg -y -i C:/Users/fang/Desktop/1.m4a -ar 8000 -acodec mp3 C:/Users/fang/Desktop/5.mp3"); 
ProcessBuilder builder = new ProcessBuilder();
        try {
            builder.command(convert);
            // 如果此属性为 true，则任何由通过此对象的 start() 方法启动的后续子进程生成的错误输出都将与标准输出合并，
            // 因此两者均可使用 Process.getInputStream() 方法读取。这使得关联错误消息和相应的输出变得更容易
            builder.redirectErrorStream(true);
            Process process = builder.start();

            InputStream is = process.getInputStream();
            InputStreamReader inst = new InputStreamReader(is, "GBK");
            BufferedReader br = new BufferedReader(inst);//输入流缓冲区
            String res = null;
            StringBuilder sb = new StringBuilder();
            while ((res = br.readLine()) != null) {//循环读取缓冲区中的数据
                sb.append(res + "\n");
            }
            System.out.println(sb.toString());
        } catch (Exception e) {
            mark = false;
            System.out.println(e);
            e.printStackTrace();
        } finally {

        }

解决

ProcessBuilder中的命令必须使用全路径指定，否则报错。

D:\\softwares\\ffmpeg-4.4.1-essentials_build\\bin\\ffmpeg.exe -y -i C:/Users/fang/Desktop/1.m4a -ar 8000 -acodec mp3 C:/Users/fang/Desktop/5.mp3