title: create thumbnails for mp4 using ffmpeg
body: <p>Iam using ffmpeg with php to create thumbnails for videos on the fly .It saves the thumbnails to a particular file and then i retrieve it using php. I want to create thumbnails for all types of videos possible. The problem with ffmpeg that iam facing is that iam not able to create thumbnails for videos with .mp4 extensions. </p>
  
  <pre><code>&lt;?
  $ffmpeg = '/usr/bin/ffmpeg/ffmpeg'; //to load the extension ffmpeg
  
  $video = '/path/to/video'.$file_thumb; //path to the video
  
  $image = '/store/it/here'; //path to store the thumbnail
  
  $interval = 5;
  $size = '640x480';
  
  //It runs with the below command    
  $cmd = "$ffmpeg -i $video -deinterlace -an -ss $interval -f mjpeg -t 1 -r 1 -y -s $size 
  $image 2&gt;&amp;1"; 
  </code></pre>
  
  <p>?></p>