public function getSubtitleUrls(array $subtitles, $all = false)
    {
        $subtitlesUrls = array();

        if (!empty($subtitles['data'])) {
            foreach ($subtitles['data'] as $sub) {
                if (!empty($sub['SubDownloadLink'])) {
                    $subtitlesUrls[] = $sub['SubDownloadLink'];
                    if ($all === false) {
                        return $subtitlesUrls;
                    }
                }
            }
        }

        return $subtitlesUrls;
    }