on shell type
php -r 'phpinfo();' | grep ffmpeg
the result should be this
ffmpeg
ffmpeg support (ffmpeg-php) => enabled
ffmpeg-php version => 0.5.0
ffmpeg.allow_persistent => 0 => 0
or create a php file named: ffmpegcheck.php
with following content
PHP Code:
extension_loaded('ffmpeg') or die("ffmpeg extension not loaded");