elif by_format.get(cat):
          url = "http://dir.xiph.org/codecs/{}".format(by_format[cat].title())
      elif cat:
          url = "http://dir.xiph.org/genres/{}".format(cat.title())

      # Collect all result pages
      html = ahttp.get(url)
      for i in range(1, 9):
          m = re.search('href="[?]cursor=(\w+)">Next</a>', html)
          if not m:
              break
          self.status(i / 11.1)
          html += ahttp.get(url, {"cursor": m.group(1)})
      try:
          html = html.encode("raw_unicode_escape").decode("utf-8")
      except:
          pass

      # Find streams