IMDB Grabber Trailer Thumbnail PHP

Question

I am new on PHP and HTLm and trying to grab Trailer Thumbnail, I grab poster but not successfully grab Trailer Thumbnail.

$arr['poster'] = $this->match('/<link rel=.image_src. href="(.*?)"/msi', $html, 1);
$arr['trailer_image'] = $this->match('/<div class=.jw-preview jw-reset. style="(.*?)"/msi', $html, 1);

Uploading images to understand how can i do it? Below is poster URL

Below is Trailer Image URL

My result :(

Please help me how can i get it? Thanks