PHP exec not working properly

Question

I'm trying to run ffmpeg in my WAMP server with the exec command. Though I have set in the .htaccess file "php_value safe_mode off" and apache allow the override, the exec is still not working properly. if I try to execute

   <?
   php exec("mkdir aaa");  
   ?>

it works, but when I do something like

    exec("ffmpeg.exe -y -i D:\Documents\Video.wmv -f mp4  D:\Documents\Video.mp4 -y");

it doesn't do nothing. This works fine is prompted in the command line, but for some reason it doesn't when I try to execute it from the server. Do you have any ideas?

Is ffmpeg.exe in the PATH evn variable for the shell run under Apache? (Check environment with phpinfo.) — mario
– mario, Commented Oct 18, 2011 at 21:18

George · Accepted Answer · 2011-10-18 21:17:36Z

2

You need to escape backslashes in string literals:

exec("ffmpeg.exe -y -i D:\\Documents\\Video.wmv -f mp4  D:\\Documents\\Video.mp4 -y");

answered Oct 18, 2011 at 21:17

George

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1 Comment

Mike Purcell Over a year ago

Sucks that this has to be done manually, seems like escapeshellarg() should handle escaping backslashes.

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