ef get_youtube_title(uri, auth_key):
    vid = None
    if 'youtu.be/' not in uri:
        if '?v=' in uri:
            vid = uri[uri.index('?v=')+3:uri.index('?v=') + 14]
        elif '&v=' in uri:
            vid = uri[uri.index('&v=')+3:uri.index('&v=') + 14]
        else:
            return None
    else:
        vid = uri[uri.rindex('be/')+3:uri.rindex('be/')+14]

    video_data = query(vid, auth_key)
    if video_data is None:
      return None
    else:
      title, views, time, uploader, likes, dislikes = video_data
    if title == '':
        return None
    percentage = get_percentage(likes, dislikes)
    # Not including the uploader in the title info; it's rarely important in determining a link's quality.
    return "\002You\00300,04Tube\017 " + title + " - " + views + " views - Uploaded by " + uploader + " - " + time + "long - " + likes + " likes - " + dislikes + " dislikes - " + percentage + "%"