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Read and modify metadata of digital image, including EXIF, IPTC, XMP.

Project description

pyexiv2

Read and modify metadata of digital image, including EXIF, IPTC, XMP. It runs on C++ API of exiv2.

Features

  • Supported platforms: Linux 64bit, Windows 64bit
  • Works with Python3 (64bit)
  • Support for image paths and data that contain unicode characters.
  • Not thread-safe, because some global variables have been used in API.

Usage

  • read metadata

    >>> from pyexiv2 import Image
    
    >>> i = Image("tests/1.jpg")
    >>> i.read_exif()
    {'Exif.Image.DateTime': '2019:06:23 19:45:17', 'Exif.Image.Artist': 'TEST', 'Exif.Image.Rating': '4', ...}
    >>> i.read_iptc()
    {'Iptc.Envelope.CharacterSet': '\x1b%G', 'Iptc.Application2.ObjectName': 'TEST', 'Iptc.Application2.Keywords': 'TEST', ...}
    >>> i.read_xmp()
    {'Xmp.dc.format': 'image/jpeg', 'Xmp.dc.rights': 'lang="x-default" TEST', 'Xmp.dc.subject': 'TEST', ...}
    
  • modify metadata

    >>> # prepare the XMP data you want to modify
    >>> _dict = {"Xmp.xmp.CreateDate": "2019-06-23T19:45:17.834",   # this will overwrite its original value, or add it if it doesn't exist
    ...          "Xmp.xmp.Rating": ""}  # this will delete the datum in the image
    }
    
    >>> i.modify_xmp(_dict)
    >>> xmp_dict = i.read_xmp()         # read it again
    >>> xmp_dict["Xmp.xmp.CreateDate"]
    '2019-06-23T19:45:17.834'           # it has been set
    >>> xmp_dict["Xmp.xmp.Rating"]
    KeyError: 'Xmp.xmp.Rating'          # it has been deleted
    
    # use i.modify_exif() and i.modify_iptc() in the same way
    
  • Metadata reference tables: https://www.exiv2.org/metadata.html

  • You may be interested in these metadata on Windows:

    {'Xmp.dc.title': 'lang="x-default" I am title',
    'Xmp.dc.subject': 'label1; label2; label3',
    'Xmp.MicrosoftPhoto.Rating':'75'}
    

Tests

There are some test cases in folder "pyexiv2/tests". Run them by pytest:

pip install pytest psutil
pytest -v

Project details


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