Cacher is the code snippet organizer for pro developers

<div class="responsive-video aspect-16by9">
              
  <?php 
  
    $video_url = get_post_meta( $post->ID, 'video_url', true ); 
    if (strpos($video_url,'vimeo') == true): //vimeo video 
  
  ?> 
      
    <iframe width="560" height="315" src="https://player.vimeo.com/video/<?php echo vimeo_id_from_url($video_url); ?>" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>	
  
  <?php 
    else: //vimeo video  
  ?>
      
    <iframe width="560" height="315" src="https://www.youtube.com/embed/<?php echo youtube_id_from_url($video_url); ?>" frameborder="0" allowfullscreen></iframe>
      
  <?php endif; ?>
  
</div>

// extract youtube id from url
function youtube_id_from_url($url) {
  $pattern = 
		'%^# Match any youtube URL
		(?:https?://)?  # Optional scheme. Either http or https
		(?:www\.)?      # Optional www subdomain
		(?:             # Group host alternatives
			youtu\.be/    # Either youtu.be,
		| youtube\.com  # or youtube.com
			(?:           # Group path alternatives
				/embed/     # Either /embed/
			| /v/         # or /v/
			| /watch\?v=  # or /watch\?v=
			)             # End path alternatives.
		)               # End host alternatives.
		([\w-]{10,12})  # Allow 10-12 for 11 char youtube id.
		$%x';
		$result = preg_match($pattern, $url, $matches);
		if (false !== $result) {
			return $matches[1];
		}
		return false;
}

//extract vimeo id from url
function vimeo_id_from_url($url) {

	if (preg_match("/https?:\/\/(?:www\.)?vimeo.com\/(?:channels\/(?:\w+\/)?|groups\/([^\/]*)\/videos\/|album\/(\d+)\/video\/|)(\d+)(?:$|\/|\?)/", $url, $id)){
		$video_id = $id[3];
	}
				
	return $video_id;
				
}