How to block youtube, vimeo, and other cookies from video providers by using the Cookies Policy Notification Bar Joomla! plugin, and the AllVideos Joomla! plugin.

\plugins\content\jw_allvideos\jw_allvideos\tmpl\GDPR_Compliant\default.php

<?php
/**
 * @version    6.1.0
 * @package    AllVideos (plugin)
 * @author     JoomlaWorks - https://www.joomlaworks.net
 * @copyright  Copyright (c) 2006 - 2020 JoomlaWorks Ltd. All rights reserved.
 * @license    GNU/GPL license: https://www.gnu.org/copyleft/gpl.html
 * This AllVideos template is compatible with the Cookies Policy Notification Bar - Joomla! plugin by Web357.com
 */

// no direct access
defined('_JEXEC') or die('Restricted access');

// BEGIN: Check if Cookies are accepted from the User (Compatible with Cookies Policy Notification Bar - Joomla! plugin by Web357.com)
// get cookies from browser
$jcookies = JFactory::getApplication()->input->cookie->getArray(); // $_COOKIE

// get plugin's parameters
jimport('joomla.plugin.helper');
$cookiespolicynotificationbar = JPluginHelper::getPlugin('system', 'cookiespolicynotificationbar');
$cpnb_params = new JRegistry($cookiespolicynotificationbar->params);
$cpnb_cookie_name = $cpnb_params->get('cookie_name', 'cookiesDirective');

// Block video cookies from specific categories
# $cpnb_specific_cookie_category_name_to_be_blocked = 'video-cookies';
# $cpnb_cookiesSettings = $jcookies['cpnb_cookiesSettings'];
# $cpnb_cookiesSettings_arr = json_decode($cpnb_cookiesSettings, true);
# $cpnb_specific_cookies_category_accepted = $cpnb_cookiesSettings_arr[$cpnb_specific_cookie_category_name_to_be_blocked];

if (isset($jcookies[$cpnb_cookie_name]))  
# if (isset($jcookies[$cpnb_cookie_name]) && $cpnb_specific_cookies_category_accepted)  
{
    $cookies_accepted = true;
}
else
{
    $cookies_accepted = false;
}
// END: Check if Cookies are accepted from the User
?>

<?php if ($cookies_accepted === FALSE): ?>
<div class="cpnb-accept-first-message">
    <p><?php echo JText::_('The video cannot be displayed because you have to accept the cookies first.'); ?></p>
</div>
<?php endif; ?>

<?php if ($cookies_accepted === TRUE): ?>
    <div class="avPlayerWrapper<?php echo $output->mediaTypeClass; ?>">
        <div class="avPlayerContainer"<?php echo $maxwidth; ?>>
            <div id="<?php echo $output->playerID; ?>" class="avPlayerBlock">
                <?php echo $output->player; ?>
            </div>
            <?php if (($allowVideoDownloading && $output->mediaType == 'video') || ($allowAudioDownloading && $output->mediaType == 'audio')): ?>
            <div class="avDownloadLink">
                <a target="_blank" href="<?php echo $output->source; ?>" download><?php echo JText::_('JW_PLG_AV_DOWNLOAD'); ?></a>
            </div>
            <?php endif; ?>
        </div>
    </div>

<?php endif; ?>

@Yiannistaos
I just wanted to point out that JoomlaWorks has enabled a privacy mode switch in the latest version.
Its using the co-cookie domain from Youtube.