code: def run_normalization(self):
          
          for index, media_file in enumerate(
                  tqdm(
                      self.media_files,
                      desc="File",
                      disable=not self.progress,
                      position=0
                  )):
              logger.info("Normalizing file {} ({} of {})".format(media_file, index + 1, self.file_count))
  
              media_file.run_normalization()
  
              logger.info("Normalized file written to {}".format(media_file.output_file))
docs: Run the normalization procedures