          loader = FacesLoader if self._input_is_faces else ImagesLoader
          self._loader = loader(arguments.input)
          self._alignments = Alignments(os.path.dirname(arguments.alignments),
                                        filename=os.path.basename(arguments.alignments))
  
          self._extractor = self._get_extractor(arguments.exclude_gpus)
          self._extractor_input_thread = self._feed_extractor()
  
 
</s> remove         self._alignments = self._get_alignments()
 </s> add  </s> remove         self._faces = faces if faces else Faces(arguments.faces_dir)
 </s> add         kwargs = dict()
        if alignments.version < 2.1:
            # Update headers of faces generated with hash based alignments
            kwargs["alignments"] = alignments
        self._faces = faces if faces else Faces(arguments.faces_dir, **kwargs) </s> remove         self.hash = None
 </s> add  </s> remove             basename = os.path.basename(filename)
            frame_name = os.path.splitext(basename)[0]
            extension = ".png"
            final_faces = []
 </s> add             src_filename = os.path.basename(filename)
            frame_name = os.path.splitext(src_filename)[0]
        self._faces_saver = None

          loader = FacesLoader if self._input_is_faces else ImagesLoader
          self._loader = loader(arguments.input)
        self._faces_saver = None

          self._alignments = Alignments(os.path.dirname(arguments.alignments),
                                        filename=os.path.basename(arguments.alignments))
  
          self._extractor = self._get_extractor(arguments.exclude_gpus)
          self._extractor_input_thread = self._feed_extractor()
  
keep add keep keep keep keep keep keep
 Update extracted faces to use PNG EXIF data (#1123)

Documentation
  - Update Usage.md, align.rst and image.rst
lib.image.py
  - read_image - Remove hash return, add metadata return
  - Remove read_image_hash functions
  - Add read_image_meta functios
  - Replace encode_image_with_hash with encode_image (to store metadata)
  - Add png meta reading and writing functions
  - Update Image Loaders/Savers to handle metadata rather than hashes
lib.training_data
  - Naming updates to remove references to hashes
lib.align.Alignments
  - Add versioning notes
  - Increment alignments version to 2.1
  - Deprecate hashing lookup functions
  - Replace filter_hashes with filter_faces
lib.align.detected_face
  - DetectedFace
    - Remove hash property
    - Add png header data serializing/deserializing functions
  - Mask
    - Add png header data serializing/deserializing functions
  - add update_legacy_png_header function to update png meta data
lib.cli.args - Deprecate alignments files for training
- plugins.train.trainer
  - Update alignments/mask code to read png header data
- scripts.convert
  - Aligned images folder - read data from png headers
- scripts.extract
  - Write png header information and no longer store hash of face
- tools.alignments
  - remove leftover-faces, merge and update-hashes jobs
  - Update jobs to use png meta data rather than hashes
- tools.manual
  - Update extract code to output png meta data and don't store hashes
  - Perform check on launch that tool is not pointing at a faces folder
tools.mask
  - Update to use png meta data
tools.sort
  - Update to use png meta data 
tools/mask/mask.py