Adding meta data to pre-existing php code

I would like to insert a custom field into a pro player php snipet.

<?php $video_url = get_post_meta($post->ID, 'video_url', $single = true); ?>						

   <?php
        print insert_proplayer(
             array(
                "width" => "630",
                "height" => "379",
                "playlist" => "none"
             ),
             ".$post_title."
        );
    ?>

Tried this but it isn’t working. Please help.