Update Facebook Photos Export with EXIF data

fixphotos.py

import os,json,pyexiv2
from datetime import datetime

keypath = 'fbexport/'
path_to_album= keypath+'posts/album/'
json_files = [pos_json for pos_json in os.listdir(path_to_album) if pos_json.endswith('.json')]

for album_json in json_files:
    
    with open(path_to_album+album_json) as f:
        data = json.load(f)

    for photo_data in data['photos']:
        uri = keypath + photo_data['uri']
        creation_timestamp = photo_data['creation_timestamp']
        ct = datetime.utcfromtimestamp(creation_timestamp)
        title = photo_data['title']
        description = photo_data['description'] if 'description' in photo_data else ""
        caption = title+", "+description
        img = pyexiv2.Image(uri)
        xmpDict = {
            'Xmp.photoshop.DateCreated': ct.strftime("%Y-%m-%dT%H:%M:%S"),
            'Xmp.xmp.ModifyDate': ct.strftime("%Y-%m-%dT%H:%M:%S"),
            'Xmp.xmp.CreateDate': ct.strftime("%Y-%m-%dT%H:%M:%S"),
            'Xmp.xmp.CreatorTool': '14.7.1', 
            'Xmp.exif.CompositeImage': '2', 
            'Xmp.dc.description': {'lang="x-default"': caption}
        }
        iptcDict = {
            'Iptc.Envelope.CharacterSet': '\x1b%G',
            'Iptc.Application2.RecordVersion': '2',
            'Iptc.Application2.DigitizationTime': ct.strftime("%H:%M:%S+00:00"),
            'Iptc.Application2.DigitizationDate': ct.strftime("%Y-%m-%d"),
            'Iptc.Application2.TimeCreated': ct.strftime("%H:%M:%S+00:00"),
            'Iptc.Application2.DateCreated': ct.strftime("%Y-%m-%d"),
            'Iptc.Application2.Caption': caption
        }
        exifDict = {
            'Exif.Image.ImageDescription': caption, 
            'Exif.Image.DateTime': ct.strftime("%Y:%m:%d %H:%M:%S"), 
            'Exif.Image.ExifTag': '278', 
            'Exif.Photo.ExifVersion': '48 50 51 50', 
            'Exif.Photo.DateTimeOriginal': ct.strftime("%Y:%m:%d %H:%M:%S"), 
            'Exif.Photo.DateTimeDigitized': ct.strftime("%Y:%m:%d %H:%M:%S")
        }
        img.modify_xmp(xmpDict)
        img.modify_iptc(iptcDict)
        img.modify_exif(exifDict)
        img.close()