'Creates a single reader thread for YouTube8M SequenceExamples.
Args:
filename_queue: A tensorflow queue of filename locations.
max_quantized_value: the maximum of the quantized value.
min_quantized_value: the minimum of the quantized value.
Returns:
A tuple of video indexes, video features, labels, and padding data.'

def prepare_reader(self, filename_queue, max_quantized_value=2, min_quantized_value=(-2)):

    reader = tf.TFRecordReader()
    (_, serialized_example) = reader.read(filename_queue)
    return self.prepare_serialized_examples(serialized_example, max_quantized_value, min_quantized_value)
