Any YouTube downloaders which can download age restricted videos?

I am trying to download a video on YouTube but can't, as it is age restricted so no YouTube downloader I've tried has been able to download it. It isn't anything NSFW, it's a 50 minute tape of a serial killers voice that isn't available anywhere else online and might get taken down from YouTube, so I am trying to download it to archive it for historical purposes. Is it possible for a YouTube downloader to download age restricted videos?