                  frame_no = 0
  
      def extract_multi_process(self):
          """ Run the extraction on the correct number of processes """
          for filename, faces in tqdm(
                  pool_process(
                      self.process_single_image,
                      self.images.input_images),
                  total=self.images.images_found,
 
</s>
        frame_no = 0
                  frame_no = 0
  
      def extract_multi_process(self):
          """ Run the extraction on the correct number of processes """
        frame_no = 0
          for filename, faces in tqdm(
                  pool_process(
                      self.process_single_image,
                      self.images.input_images),
                  total=self.images.images_found,
keep keep keep add keep keep keep keep keep
 alignments.json save interval for extracting (#477)

* implement save interval
scripts/extract.py