Update media timestamps in Facebook Messenger Download

facebook-messenger-media-timestamps.py

#!/usr/bin/env python3

import datetime
import glob
import json
import subprocess

for f in glob.glob("messages/*/*/message_*.json"):
	print(f)
	d = json.load(open(f))

	for m in d["messages"]:
		for p in m.get("gifs", []) + m.get("photos", []) + m.get("videos", []):
			path = p.get("uri")
			if path.startswith("http"):
				continue
			ts = p.get("creation_timestamp")
			if not ts:
				continue
			dt = datetime.datetime.fromtimestamp(ts)
			print(p)

			subprocess.run([
				"exiftool",
				"-overwrite_original",
				f"-DateTimeOriginal={dt.isoformat()}",
				path,
			])

facebook-posts-media-timestamps.py

#!/usr/bin/env python3

import datetime
import glob
import json
import subprocess

timestamps = {}

def register_timestamp(path, ts):
	dt = datetime.datetime.fromtimestamp(ts)
	prev = timestamps.get(path)
	if prev and prev <= dt:
		return
	timestamps[path] = dt

for a in glob.glob("posts/album/*.json"):
	j = json.load(open(a))

	for p in j["photos"]:
		path = p["uri"]
		ts = p["creation_timestamp"]
		register_timestamp(path, ts)

for f in glob.glob("posts/your_posts_*.json"):
	for p in json.load(open(f)):
		for a in p.get("attachments", ()):
			for d in a["data"]:
				m = d.get("media")
				if not m:
					continue
				path = m["uri"]
				ts = m["creation_timestamp"]
				register_timestamp(path, ts)

your_photos = json.load(open("posts/your_uncategorized_photos.json"))["other_photos_v2"]
your_videos = json.load(open("posts/your_videos.json"))["videos_v2"]
for v in your_photos + your_videos:
	path = v["uri"]
	ts = v["creation_timestamp"]
	register_timestamp(path, ts)

for path, dt in timestamps.items():
	print(dt, path)
	subprocess.run([
		"exiftool",
		"-overwrite_original",
		f"-DateTimeOriginal={dt.isoformat()}",
		path,
	])