@@ -272,6 +272,9 @@ $GLOBALS['TL_DCA']['tl_content']['fields']['eSM_slick_bgOpacity'] = array

   'sql'                     => "varchar(16) NOT NULL default ''"

 );

+$GLOBALS['TL_DCA']['tl_content']['fields']['multiSRC']['load_callback'][] = array('tl_content_eSM_slick', 'setMultiSrcFlags');

+

+

 class tl_content_eSM_slick extends Backend

 {

@@ -371,4 +374,29 @@ class tl_content_eSM_slick extends Backend

     }

   }

+

+  /**

+   * Dynamically add flags to the "multiSRC" field

+   *

+   * @param mixed                $varValue

+   * @param Contao\DataContainer $dc

+   *

+   * @return mixed

+   */

+  public function setMultiSrcFlags($varValue, Contao\DataContainer $dc)

+  {

+    if ($dc->activeRecord)

+    {

+      switch ($dc->activeRecord->type)

+      {

+        case 'slickSliderStart':

+        case 'slickSliderSlideStart':

+        case 'slickSliderImage':

+          $GLOBALS['TL_DCA'][$dc->table]['fields'][$dc->field]['eval']['isGallery'] = true;

+          $GLOBALS['TL_DCA'][$dc->table]['fields'][$dc->field]['eval']['extensions'] = Contao\Config::get('validImageTypes').'mp4,ogv,webm,mov';

+          break;

+      }

+    }

+    return $varValue;

+  }

 }

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