wp_filter_kses allow HTML5 video?

Ok This Thread did helped me a LOT!

So now my function works (i can embeld HTML5 videos) and it looks like this:

function validate_setting($plugin_options){ 

global $allowedtags;
$allowedtags = array(
'a' => array(
'href' => array (),
'title' => array ()),
'b' => array(
'style'=> array(),
),
);

$allowedtags['video'] = array(
    'width' => true,
    'height' => true
);
$allowedtags['source'] = array(
    'src' => true,
    'type' => true
);

$plugin_options['text_area'] = wp_kses($plugin_options['text_area'],$allowedtags);
 return $plugin_options;
}