This is a plugin for WordPress that extends the Media Explorer plugin with a new service. You may want to use it as a template

newservice.php

<?php

/*
Plugin Name: new service
Plugin URI: garhdez.com
Description: new service
Author: Pepe
*/

class MEXP_New_Template extends MEXP_Template {

  /**
	 * Template for single elements returned from the API
	 *
	 * @param string $id  the id of the view
	 * @param string $tab the tab were the user is right now
	 */
	public function item( $id, $tab ) {
		?>
		<div id="mexp-item-<?php echo esc_attr( $tab ); ?>-{{ data.id }}" class="mexp-item-area mexp-item" data-id="{{ data.id }}">
			<div class="mexp-item-container clearfix">
				<div class="mexp-item-thumb">
					<img src="{{ data.thumbnail }}">
				</div>
				<div class="mexp-item-main">
					<div class="mexp-item-content">
						{{ data.content }}
					</div>
					<div class="mexp-item-channel">
						<?php _e( 'by', 'mexp' ) ?> {{ data.meta.user }}
					</div>
					<div class="mexp-item-date">
						{{ data.date }}
					</div>
				</div>
			</div>
		</div>
		<a href="#" id="mexp-check-{{ data.id }}" data-id="{{ data.id }}" class="check" title="<?php esc_attr_e( 'Deselect', 'mexp' ); ?>">
			<div class="media-modal-icon"></div>
		</a>
		<?php
	}

	public function thumbnail( $id ) {
		?>
		<?php
	}

	/**
	 * Template for the search form
	 *
	 * @param string $id  the id of the view
	 * @param string $tab the tab were the user is right now
	 */
	public function search( $id, $tab ) {
		?>
		<form action="#" class="mexp-toolbar-container clearfix tab-all">
			<input
				type="text"
				name="q"
				value="{{ data.params.q }}"
				class="mexp-input-text mexp-input-search"
				size="40"
			>
			<input class="button button-large" type="submit" value="<?php esc_attr_e( 'Search', 'mexp') ?>">
			<div class="spinner"></div>
		</form>
		<?php
	}
}

class MEXP_New_Service extends MEXP_Service {

	const DEFAULT_MAX_RESULTS = 18;

	public function __construct() {
		$this->set_template( new MEXP_New_Template );
	}

	public function load() {
	}

	public function request( array $request ) {

		// Create the response for the API
		$response = new MEXP_Response();

		$item = new MEXP_Response_Item();
		$item->set_url( esc_url( "http://www.youtube.com/watch?v=%s" ) );
		$item->set_id( 4 );
		$item->set_content( "This is a test" );
		$item->set_thumbnail( "google.com/logo.png" );
		$item->set_date( strtotime( '30-10-1990' ) );
		$item->set_date_format( 'g:i A - j M y' );

		$response->add_item($item);

		return $response;
	}

	public function tabs() {
		return array(
			'all' => array(
				'text'       => _x( 'All', 'Tab title', 'mexp'),
				'defaultTab' => true
			),
		);
	}

	public function labels() {
		return array(
			'title'     => __( 'Insert New', 'mexp' ),
			'insert'    => __( 'Insert', 'mexp' ),
			'noresults' => __( 'No videos matched your search query.', 'mexp' ),
		);
	}
}

add_filter( 'mexp_services', 'mexp_service_new' );

function mexp_service_new( array $services ) {
	$services['new'] = new MEXP_New_Service;
	return $services;
}