ffmpeg的php exec（）无法正常工作

Question

hai i am using ffmpeg command in php exec() for converting any type of video to flv format the command i'm using i sworking fine in the command prompt but when i run the same commend it returns nothing..actully the output is Array( ) and the the third parameter $result is "1"

i've read similar questions like this on stackoverflow but it's not helping

most of the time i noticed that the issue is in path and the safe mode of php

and i have disabled safe mode using .htaccess the syntax is given below and i am using windows 7 os

the directory to the ffmpeg application is c:\\ffmpeg\\bin\\ffmpeg

the full script and output is given below:

the ffmpeg command:

   ffmpeg -i c:\xampp\htdocs\video\original\robot.mp4 -c:v libx264 -ar 44100 -crf 17 c:\xampp\htdocs\video\vids\robot.flv

the php script:

 echo "starting ffmpeg...<br/>";

 echo exec("ffmpeg -i c:\xampp\htdocs\video\original\robot.mp4 -c:v libx264 -ar 44100 -crf 17 c:\xampp\htdocs\video\vids\robot.flv",$out,$r);
 var_dump($out);
 echo $r."<br/>";
 echo "done...<br/>";
 ?>

the htaccess for switching off the safe mode:

 php_value safe_mode "0" 

the output:

 starting ffmpeg...
 array(0) { } 1 
 done...

Answer 1

Try the below one instead of using exec(ffmpeg -i 'inputfile' 'outputfile');

$cmd = "ffmpeg -ic:\\xampp\\htdocs\\video\\original\\robot.mp4 -c:v libx264 -ar 44100 -crf 17 c:\\xampp\\htdocs\\video\\vids\\robot.flv"

ob_start();

passthru($cmd);

$cmd_retr = ob_get_contents();

print_r($cmd_retr);

Answer 2

<?php
echo exec("cmd /c ffmpeg -i c:\\xampp\htdocs\video\original\robot.mp4 -c:v libx264 -ar 44100 -crf 17 c:\\xampp\htdocs\video\vids\robot.flv",$out,$r");
?>