post-meta tag Problem

I am Trying to fetch post-meta tag ( Video ) from a post and i am quite able to do the same on localhost. but whenever i put the same code on my website, It does fetch any meta tag from the post. I have checked it several times. Post does contain the post-meta-data. How to check whether it actually contains the same tag in the post meta data or not. For all your reference i am attaching the part of same code here.

The name of post-meta-tag is “video”

<?php $download = get_post_meta($post->ID, "video", TRUE);
								      echo "<iframe width=\"600\" height=\"349\" src=\"http://www.youtube.com/embed/".$download."\" frameborder=\"0\" allowfullscreen></iframe>";
								   ?>

Kindly guide me.