corrected GoPro mp4 with exiftool

correct_date_gopro.py

@@ -0,0 +1,73 @@
+#!python
+
+# https://github.com/hMatoba/Piexif
+# http://ce3wiki.theturninggate.net/doku.php?id=file_name_convention
+# destination: <BASE>/<year>/<YYYYMMDD> <Event>/ab-<YYYYMMDD>-<Event>-<nnnn>.jpg
+
+from PIL import Image
+from pathlib import Path
+import datetime as dt
+import piexif
+from collections import defaultdict
+import re
+import os
+
+SRC = r'E:\RawTriage\GoPro Hero\20230819'
+DRY_RUN = True
+
+# def constant_factory(value):
+#     return lambda: value
+# fileidx = defaultdict(constant_factory(0))
+
+fileidx = defaultdict(int)
+
+real_dt = dt.datetime(2023,7,28,15,0,0)
+gopro_dt = dt.datetime(2015,1,3,19,23,25)
+dt_diff = real_dt - gopro_dt
+
+# print(dt_diff)
+# print(gopro_dt + dt_diff)
+
+for raw in Path(SRC).iterdir():
+    fn = raw.name
+    # print(fn)
+    if not raw.is_file():
+        print(f"skipped {fn}")
+        continue
+    if raw.suffix == ".MP4":
+        atime = raw.stat().st_atime
+        mtime = raw.stat().st_mtime
+        if dt.datetime.fromtimestamp(mtime) < dt.datetime(2020,1,1,0,0,0):
+            ctime = mtime + dt_diff.total_seconds()
+            print(f"{raw.name}: cur {dt.datetime.fromtimestamp(mtime)}, new {dt.datetime.fromtimestamp(ctime)}")
+            os.utime(raw, (atime, ctime))
+        else:
+            orig = raw.with_suffix(".MP4_original")
+            atime = orig.stat().st_atime
+            mtime = orig.stat().st_mtime
+            os.utime(raw, (atime, mtime))
+        # use exiftool for MP4 metadata timestamps  3127 days, 19:36:35
+        # exiftool "-AllDates+=3127 19:36:35" "E:\RawTriage\GoPro Hero\20230819"
+    if raw.suffix == ".JPG":
+        atime = raw.stat().st_atime
+        mtime = raw.stat().st_mtime
+        ctime = mtime + dt_diff.total_seconds()
+        print(f"{raw.name}: cur {dt.datetime.fromtimestamp(mtime)}, new {dt.datetime.fromtimestamp(ctime)}")
+        if not DRY_RUN:
+            os.utime(raw, (atime, ctime))
+        # EXIF update
+        im = Image.open(raw)
+        exif_dict = piexif.load(im.info["exif"])
+        try:
+            model = exif_dict["0th"][piexif.ImageIFD.Model].decode("ascii")
+            idto = exif_dict["Exif"][piexif.ExifIFD.DateTimeOriginal].decode("ascii")
+        except:
+            continue
+        rawdt = dt.datetime.strptime(idto,"%Y:%m:%d %H:%M:%S")
+        print(model, rawdt)
+        crawstr = dt.datetime.fromtimestamp(ctime).strftime("%Y:%m:%d %H:%M:%S")
+        exif_dict["Exif"][piexif.ExifIFD.DateTimeOriginal] = crawstr.encode("ascii")
+        exif_bytes = piexif.dump(exif_dict)
+        fn2 = raw.with_name(raw.stem + "_corrected" + raw.suffix)
+        im.save(fn2, "jpeg", exif=exif_bytes, quality=95)
+        os.utime(fn2, (atime, ctime))