带有引号的Java Runtime.getRuntime（）。exec（） [英] Java Runtime.getRuntime().exec() with quotes

问题描述

我试图通过linux上的exec调用运行ffmpeg。但是我必须在命令中使用引号（ffmpeg需要它）。我一直在查看java doc for processbuilder和exec以及stackoverflow上的问题，但我似乎无法找到解决方案。

I am trying to run ffmpeg via the exec call on linux. However I have to use quotes in the command (ffmpeg requires it). I've been looking through the java doc for processbuilder and exec and questions on stackoverflow but I can't seem to find a solution.

我需要运行

ffmpeg -i "rtmp://127.0.0.1/vod/sample start=1500 stop=24000" -re -vcodec copy -acodec copy -f flv rtmp://127.0.0.1/live/qltv

我需要插入引号以下参数字符串。注意，由于processbuilder如何解析和运行命令的性质，简单地添加单引号或双引号前面的反斜杠不起作用。

I need to insert quotes into the below argument string. Note simply adding single or double quotes preceded by a backslash doesn't work due to the nature of how processbuilder parses and runs the commands.

String argument = "ffmpeg -i rtmp://127.0.0.1/vod/"
                    + nextVideo.getFilename()
                    + " start=" + nextVideo.getStart()
                    + " stop=" + nextVideo.getStop()
                    + " -re -vcodec copy -acodec copy -f flv rtmp://127.0.0.1/live/qltv";

我们非常感谢任何帮助。

Any help would be greatly appreciated.

推荐答案

创建数组！

exec可以获取一个字符串数组，这些字符串用作命令数组&参数（与命令数组相对）

exec can take an array of strings, which are used as an array of command & arguments (as opposed to an array of commands)

这样的东西......

Something like this ...

String[] arguments = new String[] { "ffmpeg", 
"-i", 
"rtmp://127.0.0.1/vod/sample start=1500 stop=24000",
"-re",
...
};

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