Save youtube thumbnail to featured image in wp

youtube_feathumbnail.php

/* Shortcode to display youtube thumbnail on your wordpress blog.
	Usage:*/



/**
 * Download image, attach it to the current post, and assign it as featured image
 * upon publishing the post.
 *
 * The dynamic portions of the hook name, `$new_status` and `$post->post_type`,
 * refer to the new post status and post type, respectively.
 *
 * Please note: When this action is hooked using a particular post status (like
 * 'publish', as `publish_{$post->post_type}`), it will fire both when a post is
 * first transitioned to that status from something else, as well as upon
 * subsequent post updates (old and new status are both the same).
 *
 * @param int     $post_id Post ID.
 * @param WP_Post $post    Post object.
 */
add_action( 'save_post', 'wpse_default_featured_image', 10, 2 );
function wpse_default_featured_image( $post_id, $post ) {
    // Bail if there is already a post thumbnail set.
    $current_post_thumbnail = get_post_thumbnail_id( $post_id );
    if ( '' !== $current_post_thumbnail && $post->post_type != 'video') {
        return;
    }



			// Get Youtube URL

//		$yturl = get_post_meta('url-video' ,  $post_id);

		$yturl =  get_post_meta($post->ID, 'url-video', true);;

		preg_match("/^(?:http(?:s)?:\/\/)?(?:www\.)?(?:m\.)?(?:youtu\.be\/|youtube\.com\/(?:(?:watch)?\?(?:.*&)?v(?:i)?=|(?:embed|v|vi|user)\/))([^\?&\"'>]+)/", $yturl, $matches);

		$video_id = $matches[1];

		// Get Thumbnail
		$file_headers = get_headers( 'https://img.youtube.com/vi/' . $video_id . '/maxresdefault.jpg' );
		$is_404 = $file_headers[0] == 'HTTP/1.0 404 Not Found' || false !== strpos( $file_headers[0], '404 Not Found' );
		$video_thumbnail_url = 'https://img.youtube.com/vi/' . $video_id . '/maxresdefault.jpg';


    $url = $video_thumbnail_url;
    $title = "The default featured image.";

    $image = media_sideload_image( $url, $post_id, $title, 'id' );
    set_post_thumbnail( $post_id, $image );

		error_log( 'MY STUFF: ' . print_r( $yturl, true ) );
		error_log( 'MY STUFF: ' . print_r( $id, true ) );



}