Featured Image / First Image / Video A snippet that first checks if the post is a video, if so places the video in the header of the article. If not it then checks to see if there is a featured image, if so - display that, if not it checks for an embedded image if so - display that. If not, do nothing

video-featured-first-image

	<?php 
		$default_attr = array(
		'alt'	=> 'photo'
	 		);
	 	$images =& get_children( array (
	 		'post_parent' => $post->ID,
	 		'post_type' => 'attachment',
	 		'post_mime_type' => 'image'
	 	)); 	
	 	$pics = get_first_image();

	if ( has_post_format( 'video' )) {
	

		    $vimeo =  get_first_video(); 
			
			$embed_code = wp_oembed_get($vimeo[0]); 

			echo ($embed_code);
			
			
	}elseif ( has_post_thumbnail() ) {
	
			the_post_thumbnail( 'medium', $default_attr); 
	
	}elseif ( '' == get_the_post_thumbnail()&&!empty($pics)) {
	?>
		
			<img src="<?php echo $pics; ?>" alt="" />
	
	<?php
	
	}else{
	
	echo 'nothing';
					}
					?>