" ffmpeg"：java.io.IOException：error = 24，打开的文件过多 [英] "ffmpeg": java.io.IOException: error=24, Too many open files

问题描述

我正在使用ffmpeg来生成预览，但是在我的程序执行过程中出现这个错误：
$ b

ffmpeg：java.io. IOException：错误= 24，太多的打开的文件

有谁知道如何解决或如何避免它??

我添加我使用ffmpeg的代码：

$ $ $ $ $ $ $ $ $ $ $ $ b if（j == 2）{
String preview = temp2 [i] + temp [j] +。jpg;
Process p = Runtime.getRuntime（）。exec（ffmpeg -i anotados /+ temp2 [i] +-r 1 -ss 00:00：+ temp [j] +-t 1 - s 158x116 imagenes /+ preview）;

TextOut.write（preview +\\\
）;



$ div $解析方案

检查您的 ulimit -n 输出来查看允许从该shell生成的打开文件进程的数量。历史上的Unix系统有20个文件的限制，但在我的Ubuntu桌面上默认是1024个打开的文件。

您可能需要提高允许打开的文件的数量 /etc/security/limits.conf 文件。或者，您可能需要修改您的应用程序，以更积极地关闭打开的文件。

另一种可能性是对可能打开的文件数量的系统范围的限制。我不知道哪些现代系统仍然会有这样的限制，但首先要看的是 sysctl -a 输出。 （好吧，也许是系统文档后的第二个地方。）

I am working with ffmpeg to generate previews, but I get this error in the middle of the execution of my program:

"ffmpeg": java.io.IOException: error=24, Too many open files

Does anybody know how to solve or how to avoid it??
I add the piece of code where I use ffmpeg:

    for (int j = 0; j < temp.length; j++) {
                                                if(j==2){
                                                    String preview = temp2[i] + temp[j] +".jpg";
                                                    Process p = Runtime.getRuntime().exec("ffmpeg -i anotados/" +temp2[i] + " -r 1 -ss 00:00:"+temp[j]+" -t 1 -s 158x116 imagenes/" + preview);

                                                    TextOut.write(preview+"\n");
                                                }
 }

解决方案

Check your ulimit -n output to see how many open files processes spawned from that shell are allowed to have. Historical Unix systems had a limit of 20 files, but default on my Ubuntu desktop is 1024 open files.

You may need to raise the number of open files you are allowed in the /etc/security/limits.conf file. Or, you may need to modify your application to more aggressively close open files.

Another possibility is a system-wide limit on number of files that may be open. I don't know which modern systems would still have such limits in place, but a first place to look would be sysctl -a output. (Well, maybe second place, after system documentation.)

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