PHP ffmpeg Upload Script

 
   // size input prevents buffer overrun exploits.
   function sizeinput($input, $len){
        (int)$len;
    (string)$input;
    $n = substr($input, 0,$len);
  $ret = trim($n);
   $out = htmlentities($ret, ENT_QUOTES);
   return $out;
}
 //Check the file is of correct format.  function checkfile($input){
    $ext = array('mpg', 'wma', 'mov', 'flv', 'mp4', 'avi', 'qt', 'wmv', 'rm');
    $extfile = substr($input['name'],-4); 
    $extfile = explode('.',$extfile);
    $good = array();
    $extfile = $extfile[1];
    if(in_array($extfile, $ext)){
          $good['safe'] = true;
    $good['ext'] = $extfile;
    }else{
          $good['safe'] = false;
   }
     return $good;
 }
  $user_id = $_SESSION['table_id'];
 // if the form was submitted process request if there is a file for uploading
 if($_POST && array_key_exists("vid_file", $_FILES)){
                           //$uploaddir is for videos before conversion
                          $uploaddir = 'uploads/videos/';
                           //$live_dir is for videos after converted to flv
   $live_dir = 'uploads/live/';
                            //$live_img is for the first frame thumbs.
   $live_img = 'uploads/images/';  
                           $seed = rand(1,2009) * rand(1,10);   
   $upload = $seed. basename($_FILES['vid_file']['name']);
   $uploadfile = $uploaddir .$upload;        
   $vid_title = sizeinput($_POST['vid_title'], 50);
  $vid_desc = sizeinput($_POST['vid_description'], 200);
                           $vid_cat = (int)$_POST['vid_cat'];
   $vid_usr_ip = $_SERVER['REMOTE_ADDR'];
                      $safe_file = checkfile($_FILES['vid_file']);
   if($safe_file['safe'] == 1){
                                if (move_uploaded_file($_FILES['vid_file']['tmp_name'], $uploadfile)) {
                                       echo "File is valid, and was successfully uploaded.<br/>";
      $base = basename($uploadfile, $safe_file['ext']);
      $new_file = $base.'flv';
     $new_image = $base.'jpg';
      $new_image_path = $live_img.$new_image;
      $new_flv = $live_dir.$new_file;
      //ececute ffmpeg generate flv
                      exec('ffmpeg -i '.$uploadfile.' -f flv -s 320x240 '.$new_flv.'');
                       //execute ffmpeg and create thumb
   exec('ffmpeg  -i '.$uploadfile.' -f mjpeg -vframes 1 -s 150x150 -an '.$new_image_path.'');
   echo 'Thank You For Your Video!<br>';
                       //create query to store video

   $sql = 'INSERT INTO videos (vid_cat_id, vid_user, vid_title, vid_desc, vid_file_name, image_file, vid_usr_ip) VALUES(\''.$vid_cat.'\', \''.$user_id.'\', \''.$vid_title.'\', \''.$vid_desc.'\', \''.$new_file.'\', \''.$new_image.'\', \''.$vid_usr_ip.'\')';
      $mysql = new mysqli('localhost', 'user', 'Pass&d', 'databasename');
     echo '<img src="'.$new_image_path.'" /><br/>            <h3>'.$vid_title.'</h3>';         mysqli_query($mysql, $sql) or die(mysqli_error($mysql));
             } else {
                    echo "Possible file upload attack!\n";
           print_r($_FILES);
             }
 
    }else{
  
       echo 'Invalid File Type Please Try Again. You file must be of type      .mpg, .wma, .mov, .flv, .mp4, .avi, .qt, .wmv, .rm';   
   }
 }
 ?>
 <form action="" method="post" enctype="multipart/form-data" name="form1" id="form1">
  <p align="left">Please upload Your video.  Thumbnails of your videos are based on the first frame of your video. <br /><h3>Please allow up to a minute for your video to upload. </h3>
   </p>
  <table width="600" border="0" align="center" cellpadding="2" cellspacing="2">
  <tr>
    <td width="260" align="left" colspan="3"><div align="center">
      <h3>Upload your Video ! </h3>
    </div></td>
   </tr>
    <tr>
      <td width="260"  align="left"> </td>
      <td width="326" align="left"> </td>
    </tr>
    <tr>
      <td align="left">Title Of Video : </td>
      <td align="left"><input name="vid_title" type="text" id="vid_title" /></td>
   </tr>
   <tr>
     <td align="left">File: .mov, .avi, .wma , .mpeg : </td>
     <td align="left"><input name="vid_file" type="file" id="vid_file" /></td>
  </tr>
   <tr>
     <td align="left">Description:</td>
    <td align="left"><textarea name="vid_description" id="vid_description"></textarea></td>
  </tr>
   <tr>
     <td align="left">Category:</td>
    <td align="left"><select name="vid_cat">
       <option value="1" selected="selected">Video</option>
       <option value="2">Cat1</option>
      <option value="3">Cat2</option>
      <option value="4">Cat3</option>
      <option value="5">Cat4</option>
    </select>
     </td>
  </tr>
  <tr>
    <td> </td>
     <td><input type="submit" name="Submit" value="Upload Video" /></td>
  </tr>
 </table>
 
</form>

I have not fully tested this script, it's good to learn from, you can see how ffmpeg is being used from php and you can see below mysql is used to insert thumb and encoded video. this script should work, on most Linux operating systems, with little change to the code to reflect your system.