Add heic2date and mov2date

mov2date.py

@@ -0,0 +1,74 @@
+#!/usr/bin/env python3
+
+import sys
+import os
+import datetime
+from pathlib import Path
+
+class Mov2Date:
+	def __init__(self, path):
+		self.path = Path(path)
+
+	def date(self):
+		creation_time, _ = get_mov_timestamps(self.path)
+		return creation_time
+
+	def rename(self, prefix='', postfix=''):
+		name = prefix + self.date().strftime("%Y%m%d_%H%M%S") + postfix
+		new_path = self.path.with_name(name).with_suffix(self.path.suffix)
+		print(new_path)
+		os.rename(self.path, new_path)
+
+def get_mov_timestamps(filename):
+    ''' Get the creation and modification date-time from .mov metadata.
+
+        Returns None if a value is not available.
+    '''
+    from datetime import datetime as DateTime
+    import struct
+
+    ATOM_HEADER_SIZE = 8
+    # difference between Unix epoch and QuickTime epoch, in seconds
+    EPOCH_ADJUSTER = 2082844800
+
+    creation_time = modification_time = None
+
+    # search for moov item
+    with open(filename, "rb") as f:
+        while True:
+            atom_header = f.read(ATOM_HEADER_SIZE)
+            #~ print('atom header:', atom_header)  # debug purposes
+            if atom_header[4:8] == b'moov':
+                break  # found
+            else:
+                atom_size = struct.unpack('>I', atom_header[0:4])[0]
+                f.seek(atom_size - 8, 1)
+
+        # found 'moov', look for 'mvhd' and timestamps
+        atom_header = f.read(ATOM_HEADER_SIZE)
+        if atom_header[4:8] == b'cmov':
+            raise RuntimeError('moov atom is compressed')
+        elif atom_header[4:8] != b'mvhd':
+            raise RuntimeError('expected to find "mvhd" header.')
+        else:
+            f.seek(4, 1)
+            creation_time = struct.unpack('>I', f.read(4))[0] - EPOCH_ADJUSTER
+            creation_time = DateTime.fromtimestamp(creation_time)
+            if creation_time.year < 1990:  # invalid or censored data
+                creation_time = None
+
+            modification_time = struct.unpack('>I', f.read(4))[0] - EPOCH_ADJUSTER
+            modification_time = DateTime.fromtimestamp(modification_time)
+            if modification_time.year < 1990:  # invalid or censored data
+                modification_time = None
+
+    return creation_time, modification_time
+
+if __name__ == "__main__":
+        if len(sys.argv) != 2:
+                print("Usage: mov2date.py path/to/movie.mov")
+        else:
+                mov_path = sys.argv[1]
+                m2d = Mov2Date(mov_path)
+                m2d.rename(prefix='IMG_', postfix='')
+