exif_datetime_setter.sh

exif_datetime_setter.sh

#!/bin/bash

# Orginal script from pirafrank https://gist.github.com/pirafrank/9970c15fec0fa6e49be5363ef6ed1cf3
# Simple script to parse JPG photo filename and set exif datetime,
# creation date and file modification date accordingly.
# Timezone is taken by your PC.

# exec this script by searching for .JPG and .jpg files in given folder
# find . -type f -name "*.JPG" -o -name "*.jpg" -exec /path/to/exif_datetime_setter.sh {} \;
# Force update of all files based on exif info -> exiftool '-FileModifyDate<Exif:CreateDate'  -overwrite_original *
# Force update of all files based on exif info -> exiftool '-AllDates<Exif:CreateDate'  -overwrite_original *
# For videos -> exiftool '-FileModifyDate<Track1: MediaCreateDate' -overwrite_original -ext mp4 -r .

force="false"

if [ -z "$1" ]; then
    echo "Error: no input file as argument. Exiting..."
    exit 1
fi

filepath="$1"
filename="${1##*/}"

# fotor pattern exception as it puts the time in epoch format
fotor_re="(fotor)(_|-)([0-9]{10})([0-9]{4,5})(\.)(.{3})"

# Windows Phone pattern exception as it does not put the time in filename
WP_re="(WP)(-?|_?)([0-9]{4})([0-9]{2})([0-9]{2})(-?|_?)([0-9]{3})(\.)(.{3})"

# Filename match pattern for files starting with just numbers
#                               20160624_040232162_iOS.jpg
#                               20130615_005110.jpg
filename_num_re="([0-9]{4})(-?|_?)(1[0-2]|0[1-9])(-?|_?)(0[1-9]|[12][0-9])(-?|_?)([0-9]{2})(-?|_?)([0-9]{2})(-?|_?)([0-9]{2})(.*)(\.)(.{3,4})"

# Filename match pattern for:   Screenshot_20160213-224012.png
#                               IMG_2021-12-10_060707.png
#                               WP_2022-12-10_060707.png
#                               WP_20160104_16_18_34_Pro_LI.png
#                               IMG_20160216_183300.jpg
#filename_re="([a-zA-Z0-9_]*|[^a-zA-Z0-9_]*)([0-9]{4})(-?|_?)([0-9]{2})(-?|_?)([0-9]{2})(-?|_?)([0-9]{2})(-?|_?)([0-9]{2})(-?|_?)([0-9]{2})(.*)(\.)(.{3,4})"
filename_re="([a-zA-Z0-9_]*|[^a-zA-Z0-9_]*)([0-9]{4})(-?|_?)(1[0-2]|0[1-9])(-?|_?)(0[1-9]|[12][0-9])(-?|_?)([0-9]{2})(-?|_?)([0-9]{2})(-?|_?)([0-9]{2})(.*)(\.)(.{3,4})"

if [[ $filename =~ $fotor_re ]]; then
    epoctime=${BASH_REMATCH[3]}
    arg2=$(date -r "$epoctime" +%Y:%m:%d\ %H:%M:%S)
    echo Changing Fotor file "$filename" datetimeoriginal to: "$arg2"
elif [[ $filename =~ $WP_re ]]; then
    year=${BASH_REMATCH[3]}
    month=${BASH_REMATCH[4]}
    day=${BASH_REMATCH[5]}
    hour="12"
    mins="00"
    secs="00"
    arg2="$year:$month:$day $hour:$mins:$secs"
    echo Changing WP file "$filename" datetimeoriginal to: "$arg2"
elif [[ $filename =~ $filename_num_re ]]; then
    echo "Working on: $filepath ..."
    year=${BASH_REMATCH[1]}
    month=${BASH_REMATCH[3]}
    day=${BASH_REMATCH[5]}
    hour=${BASH_REMATCH[7]}
    mins=${BASH_REMATCH[9]}
    secs=${BASH_REMATCH[11]}
    arg2="$year:$month:$day $hour:$mins:$secs"
    echo Changing Number: "$filename" datetimeoriginal to: "$arg2"
elif [[ $filename =~ $filename_re ]]; then
    echo "Working on: $filepath ..."
    year=${BASH_REMATCH[2]}
    month=${BASH_REMATCH[4]}
    day=${BASH_REMATCH[6]}
    hour=${BASH_REMATCH[8]}
    mins=${BASH_REMATCH[10]}
    secs=${BASH_REMATCH[12]}
    arg2="$year:$month:$day $hour:$mins:$secs"
    echo Changing "$filename" datetimeoriginal to: "$arg2"
else
    echo "Error: $filename does not match pattern. Exiting..."
    exit 1
fi

# from exiftool docs:
# "If the Geotime tag is not specified, the value of DateTimeOriginal
# is used for geotagging. Local system time is assumed unless
# DateTimeOriginal contains a timezone."

if [ "$force" = "true" ] ; then
    exiftool -overwrite_original -DateTimeOriginal="$arg2" -filemodifydate="$arg2" \
        -FileCreateDate="$arg2" -createdate="$arg2" -modifydate="$arg2" "$filepath"
    exit 0
else
    # if datetimeoriginal is set, set file modification and file creation dates to datetimeoriginal value
    exiftool -if 'defined $datetimeoriginal and not $datetimeoriginal =~ /(^\s*$)/' \
        "-FileCreateDate<DateTimeOriginal" "-FileModifyDate<DateTimeOriginal" "$filepath"

    # if datetimeoriginal is missing, is empty or contains only spaces, set datetimeoriginal from data parsed from filename
    exiftool -if 'not defined $datetimeoriginal or $datetimeoriginal =~ /(^\s*$)/' \
        -overwrite_original -DateTimeOriginal="$arg2" -filemodifydate="$arg2" \
        -FileCreateDate="$arg2" -createdate="$arg2" -modifydate="$arg2" "$filepath"
fi