This snippet takes a Dropbox linked video file and makes it work in WordPress

dropbox-link-loop-snippet.php

$dropbox_link 	= esc_attr( get_post_meta( get_the_ID(), 'name_dropbox_link', true ) );
$image 			    = get_the_post_thumbnail( get_the_ID() );


if( $dropbox_link )
{
	// Format the link properly
	$formatted = str_replace( "?dl=0", "?dl=1", $dropbox_link );

	// Use site logo if there is no featured image
	if( empty( $image ) )
	{
		$image = get_header_image();
	}

    echo '<div class="dropbox video-embed-container">';
        echo '<video src="' . $formatted . '" controls preload="metadata" poster="'. $image .'">';
    echo '</div>';
}