Random YouTube Video Backgrounds with Video Background Pro

functions.php

<?php
/**
 * Randomize a list of YouTube videos for a video background through Video Background Pro
 *
 * @var Array $youtube_url_list an array of YouTube URLs 
 * @var String $url The random YouTube URL
 * @var String $shortcode The [vidbg] shortcode. Make sure to use $url for the $youtube_url
 *
 * @link https://pushlabs.co/docs/video-background-pro/#using-the-shortcode
 *
 * @author Push Labs, 02/27/18
 */
function themeprefix_vidbgpro_random_video_background() {
  // Conditionally call the function only if it is a certain page
  /*
  if ( !is_page( PAGE_ID ) ) {
    return;
  }
  */

  // An array of YouTube URLs
  $youtube_url_list = array(
    'https://youtube.com/link1',
    'https://youtube.com/link2',
    'https://youtube.com/link3',
  );

  // Use $url in the shortcode, it is the random link pulled from the array
  $random_link = array_rand( $youtube_url_list );
  $url = $youtube_url_list[$random_link];

  // The [vidbg] shortcode. More here: https://pushlabs.co/docs/video-background-pro/#using-the-shortcode
  $shortcode = '[vidbg container="#content" type="youtube" youtube_url="' . $url . '"]';

  echo do_shortcode( $shortcode );
}
add_action( 'wp_footer', 'themeprefix_vidbgpro_random_video_background' );
?>