def METHOD_NAME(self):
    with open(self.filename, "rb") as h:
        page = OggPage(h)
    packet = page.packets[0]
    packet = (packet[:16] + b"\x00\x00\x01\x00" + b"\x00\x00\x00\x00" +
              b"\x00\x00\x00\x00" + packet[28:])
    page.packets[0] = packet
    info = OggVorbisInfo(BytesIO(page.write()))
    self.failUnlessEqual(info.bitrate, 32768)