'Returns:
text: a stream information text summary'

def pprint(self):

    s = (u'ASF    (%s)    %d    bps,    %s    Hz,    %d    channels,    %.2f    seconds' % ((self.codec_type or self.codec_name or u'???'), self.bitrate, self.sample_rate, self.channels, self.length))
    return s
