my best try

    // hercules begin
$myembed = htmlentities( (string)$feed_item->embed );
$feed_item->desc = "ID:<h2>{$feed_item->title}</h2><br>\n{$myembed}<br>\n{$feed_item->desc}";

      /* hercules closer */
        $post = array(
            'post_author'     => '1',
            'post_status'     => $_POST['status'],
            'post_type'       => $cpt,
            'post_title'      => (string) $feed_item->title,
            'post_content'    => (string) $feed_item->desc
            );
        $post_id = wp_insert_post( $post );
        update_post_meta($post_id, 'sponsor',      (string)$_POST['source']);
        update_post_meta($post_id, 'videoID',      (string)$feed_item->id);
  //hercules begin
          $myembeddirty = array('ID:','&lt;','&quot;','&amp;','&gt;'
);
         $myembedcleaner = array('','<','"','&','>'
);

$prev = get_post( $post_id );
$post->post_content = str_replace($myembeddirty, $myembedcleaner, $post->post_content);
$prev->post_content = $post->post_content;
wp_insert_post( $prev );

      $post = array(
       'post_content' =>  $post->post_content,
        );
        wp_insert_post($post_id);
        // hercules closed