[solved]Video fail to init - php exec issues

Hello, I am using a Micro AWS Linux box Linux ip-172-31-8-3 3.4.68-59.97.amzn1.x86_64 #1 SMP Tue Nov 5 07:40:09 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux I am having trouble with the VIDEO module which logs this error and now seems to recurse but at the beginning it was failing to "Fork" within exec php instruction. -- log -- php 01/03/2014 - 15:36 Warning : fopen(/tmp/_temp_1388759766-52c6cad601f1d... admin php 01/03/2014 - 15:36 Warning : exec(): Unable to fork [/usr/bin/ffmpeg -h ... admin php 01/03/2014 - 15:36 Warning : exec(): Unable to fork [/usr/bin/ffmpeg -h... admin php 01/03/2014 - 15:36 Warning : exec(): Unable to fork [/usr/bin/ffmpeg ... admin php 01/03/2014 - 15:36 Warning : exec(): Unable to fork [/usr/bin/ffmpeg ... admin php 01/03/2014 - 15:36 Warning : fopen(/tmp/_temp_1388759765-52c6cad5eba19... admin php 01/03/2014 - 15:36 Warning : exec(): Unable to fork [/usr/bin/ffmpeg ... admin php 01/03/2014 - 15:36 Warning : exec(): Unable to fork [/usr/bin/ffmpeg ... admin php 01/03/2014 - 15:36 Warning : fopen(/tmp/_temp_1388759765-52c6cad5e5275... admin php 01/03/2014 - 15:36 Warning : exec(): Unable to fork [/usr/bin/ffmpeg ... admin php 01/03/2014 - 15:36 Warning : exec(): Unable to fork [/usr/bin/ffmpeg ... admin I have checked into php.ini and the SAFE_MODE is OFF, so exec should be allowed even outside apache directories also /tmp is 777. btw, i can run the following command within a sample .php file Warning : exec(): Unable to fork [/usr/bin/ffmpeg -protocols 2>&1] dans PHPVideoToolkit->_captureExecBuffer() (ligne 532 dans /var/www/html/sites/all/modules/video/libraries/phpvideotoolkit/phpvideotoolkit.php5.php). Warning : fopen(/tmp/_temp_1388759766-52c6cad601f1d.txt): failed to open stream: No such file or directory dans PHPVideoToolkit->_captureExecBuffer() (ligne 538 dans /var/www/html/sites/all/modules/video/libraries/phpvideotoolkit/phpvideotoolkit.php5.php). see code mention by log : private function _captureExecBuffer($command) { $buffer = array(); $err = 0; exec($command . ' 2>&1', $buffer, $err); // line 532 if ($err !== 127) { if (isset($buffer[0]) === FALSE) { $tmp_file = $this->_tmp_directory . '_temp_' . uniqid(time() . '-') . '.txt'; exec($command . ' &>' . $tmp_file, $buffer, $err); if ($handle = fopen($tmp_file, 'r')) { // line 538 $buffer = array(); while (!feof($handle)) { array_push($buffer, fgets($handle, 4096)); } fclose($handle); } @unlink($tmp_file); } } I wonder if it's a memory issue or some kind of restrictions left somewhere?? Many thanks in advance Laurent.