See the part of the import plugin that creates the post

<?php
// this is the file import_ajax.php that plugin to auto fire action. // he too have problem with name images.
// yes my friend, thebrand is just a mask about orginal brand. I used find and replace to change this in all document, irrelevant :-)

// hercules: I'm trying to work with this objects:  $title  $image  $thumb_url $thumbid

$totalvideo = $_POST['totalvideo'];
if ($totalvideo<>0){
$player_width = get_option('thebrand_player_width');
$player_height = get_option('thebrand_player_height');
$custom_link = get_option('thebrand_import_customfield_link');
$custom_guid = get_option('thebrand_import_customfield_guid');
$custom_duration = get_option('thebrand_import_customfield_duration');
$custom_rate = get_option('thebrand_import_customfield_rate');
$custom_thumb = get_option('thebrand_import_customfield_thumb');
$custom_embed_code = get_option('thebrand_import_customfield_embed_code');
$get_thumb = get_option('get_thumb');
$get_jwplayer = get_option('get_jwplayer');
$title_template = get_option('thebrand_import_title_template');
$content_template = get_option('thebrand_import_content_template');
$get_videojs = get_option('get_videojs');
$rating = $_POST['rating'];
$duration_value = $_POST['duration_value'];

$publish_after = $_POST['publish_after'];
$publish_between = $_POST['publish_between'];

if($publish_after==0)
{
$start_post_time=current_time('timestamp');
$post_status='publish';
}
else {
$start_post_time=current_time('timestamp')+ $publish_after;
$post_status='future';
}
if($publish_after=="draft")
{
$start_post_time=current_time('timestamp');
$post_status='draft';
}
$post_time=$start_post_time;
$n=0;
		 for ($i=1;$i<=$totalvideo;$i++)
		 {
if (($_POST['checkbox_'.$i])=='checked') {$chon = 1;} else{ $chon=0;}
if($chon){
$n++;
		 $title  = $_POST['title_'.$i];

		 $description  = $_POST['excerpt_'.$i];

		 $link  = urldecode($_POST['secondurl_'.$i]);

		 $guid  = urldecode($_POST['videoid_'.$i]);

		 $image  = urldecode($_POST['thumb_'.$i]);

		 $excerpt  = $_POST['excerpt_'.$i];

		 $duration  = urldecode($_POST['duration_'.$i]);
		if($get_jwplayer==1) {
		$embed_code  = '<iframe src="'.plugin_dir_url( __FILE__ ).'jwplayer/?url='.$link.'" frameborder=0 width='.$player_width.' height='.$player_height.' scrolling=no allowfullscreen webkitallowfullscreen mozallowfullscreen oallowfullscreen msallowfullscreen></iframe>';
		} else {
		 $embed_code  = '<iframe src="http://flashservice.thebrand.com/embedframe/'.$guid.'" frameborder=0 width='.$player_width.' height='.$player_height.' scrolling=no></iframe>';
		 }
		 $tags  = $_POST['tags_'.$i];

		 $category  = urldecode($_POST['cat_'.$i]);

		 $rate  = urldecode($_POST['rate_'.$i]);


		//kiem tra video trung
	$args = array('meta_query' => array(array('key' => 'guid','value' => $guid)));
	$videoidQuery = new WP_Query( $args );
				if ($videoidQuery->have_posts()){
				echo "<div id=\"message\" class=\"updated fade\" style='color:red;'><p>$n. $title - Video existed!</p></div>\n";
				} else {

		 $post_title = str_replace("{title}", $title, $title_template);
		 $post_title = str_replace("{duration}", $duration, $post_title);
		 $post_content = str_replace("{title}", $title, $content_template);
		 $post_content = str_replace("{duration}", $duration, $post_content);
		 $post_content = str_replace("{link}", $link, $post_content);
		 $post_content = str_replace("{excerpt}", $excerpt, $post_content);
		 $post_content = str_replace("{thumb}", $image, $post_content);
		 $post_content = str_replace("{rating}", $rate, $post_content);
		 $post_content = str_replace("{embed_code}", $embed_code, $post_content);

		// Create post object
		$new_post = array(
		'ID' => '',
		'post_title' => $post_title,
		'post_content'   => $post_content,
		'post_excerpt'   => $excerpt,
		'post_status' => $post_status,
		'tags_input'     => $tags ,
		'post_date'      => date('Y-m-d H:i:s',$post_time),
		'post_category' => array( 'category' => $category )
		);
		$post_id = wp_insert_post($new_post);

if ($get_thumb==1){

    $thumb_url = $image;

        require_once(ABSPATH . 'wp-admin/includes/file.php');
        require_once(ABSPATH . 'wp-admin/includes/media.php');
        set_time_limit(300);

        if ( ! empty($thumb_url) ) {
            // Download file to temp location
            $tmp = download_url( $thumb_url );

// hercules , here it seems more like a mess
            // Set variables for storage
            // fix file filename for query strings
            preg_match('/[^\?]+\.(jpg|JPG|jpe|JPE|jpeg|JPEG|gif|GIF|png|PNG)/', $thumb_url, $matches);
            $file_array['name'] = basename($matches[0]);
            $file_array['tmp_name'] = $tmp;

            // If error storing temporarily, unlink
            if ( is_wp_error( $tmp ) ) {
                @unlink($file_array['tmp_name']);
                $file_array['tmp_name'] = '';
            }

            // do the validation and storage stuff
            $thumbid = media_handle_sideload( $file_array, $post_id, $desc );
            // If error storing permanently, unlink
            if ( is_wp_error($thumbid) ) {
                @unlink($file_array['tmp_name']);
                return $thumbid;
            }
        }
// hercules - set tha iamgem how featured image
        set_post_thumbnail( $post_id, $thumbid );
} else {
add_post_meta($post_id, $custom_thumb, $image, true);
}

add_post_meta($post_id, $custom_link, $link, true);
add_post_meta($post_id, $custom_guid, $guid, true);
add_post_meta($post_id, $custom_duration, $duration, true);
add_post_meta($post_id, $custom_rate, $rate, true);
add_post_meta($post_id, $custom_embed_code, $embed_code, true);
		 echo "<div id=\"message\" class=\"updated fade\"><p>$n. $title - Added Successful!</p></div>\n";
		$post_time= $post_time+$publish_between;
		 }
		}
		}
		$nextpageurl=trim($_POST['nextpageurl']);
		if ($nextpageurl!=""){
		$nonce = wp_create_nonce( 'thebrand_ajax' );
		?>
		<script  type='text/javascript'>

// When the document loads do everything inside here ...
jQuery(document).ready(function(){
jQuery('#importnextpage').click(function() { //start function when Random button is clicked
		jQuery.ajax({
			type: "post",url: "admin-ajax.php",data: { action: 'thebrand_load_page', url:  jQuery( '#nexturl' ).val() ,cat: escape( jQuery( '#cat1' ).val() ),rating: escape( jQuery( '#rating' ).val() ),duration_value: escape( jQuery( '#duration_value' ).val() ), _ajax_nonce: '<?php echo $nonce; ?>' },
			beforeSend: function() {jQuery("#loading").fadeIn('fast');jQuery("#formstatus").fadeOut("fast");}, //fadeIn loading just when link is clicked
			success: function(html){ //so, if data is retrieved, store it in html
				jQuery("#loading").fadeOut('slow');
				jQuery("#formstatus").html( html ); //show the html inside formstatus div
				jQuery("#formstatus").fadeIn("fast"); //animation
			}
		}); //close jQuery.ajax
		return false;
	})
})

-->
</script>
		<input name="nexturl" type="hidden" value="<?php echo $nextpageurl; ?>" id="nexturl">
		<input name="rating" type="hidden" value="<?php echo $rating; ?>" id="duration_value">
		<input name="duration_value" type="hidden" value="<?php echo $duration_value; ?>" id="duration_value">
		<input type="submit" value="Import next page" class="button-primary" id="importnextpage" />
		<?php
		}
		}
		else{ echo "<div id=\"message\" class=\"updated fade\"><p>No data received!</p></div>\n";}
?>