/**
  * Convert file object
  *
  * @param
  * @return
  */
 function convertFileObject()
 {
     global $ilCtrl;
     $this->checkPermission("write");
     $this->mcst_item = new ilNewsItem($_GET["item_id"]);
     include_once "./Services/MediaObjects/classes/class.ilObjMediaObjectGUI.php";
     $mob = new ilObjMediaObject($this->mcst_item->getMobId());
     $target_purpose = ilUtil::stripSlashes($_POST["target_purpose"]);
     $target_format = ilUtil::stripSlashes($_POST["target_format"]);
     try {
         include_once "./Services/MediaObjects/classes/class.ilFFmpeg.php";
         $med = $mob->getMediaItem("Standard");
         $mob_file = ilObjMediaObject::_getDirectory($mob->getId()) . "/" . $med->getLocation();
         $new_file = ilFFmpeg::convert($mob_file, $target_format);
         $ret = ilFFmpeg::getLastReturnValues();
         $pi = pathinfo($new_file);
         $med = $mob->getMediaItem($target_purpose);
         if (!is_object($med)) {
             $med = new ilMediaItem();
             $med->setMobId($mob->getId());
             $mob->addMediaItem($med);
             $mob->update();
             $med->setPurpose($target_purpose);
         }
         $med->setFormat($target_format);
         $med->setLocation($pi["basename"]);
         $med->setLocationType("LocalFile");
         $med->update();
         $add = is_array($ret) && count($ret) > 0 ? "<br />" . implode($ret, "<br />") : "";
         ilUtil::sendInfo($this->lng->txt("mcst_converted_file") . $add, true);
     } catch (ilException $e) {
         $ret = ilFFmpeg::getLastReturnValues();
         $add = is_array($ret) && count($ret) > 0 ? "<br />" . implode($ret, "<br />") : "";
         ilUtil::sendFailure($e->getMessage() . $add, true);
     }
     $ilCtrl->redirect($this, "editCastItem");
 }