24 Sep 2012 Rotate and rename images according to their EXIF info
This is my short script to rotate and rename image files accoring to date captured based on their EXIF info.
You need jhead and exiv2 to run this. These two programs are also available in Windows and only require you to make small changes to work there as well.
#!/bin/bash -x echo Rotating JPEG file(s) jhead -ft -autorot D*.JPG echo Rename(ing) file(s) exiv2 -r '%Y%m%d-%H%M_:basename:' rename $(ls D*)
The files are then named like this (YYYYMMDD-HHDD_OriginalFileName.extension)
20120924-1320_DSC1234.JPG 20120924-1320_DSC1234.NEF ...
This script has been tested on Nikon D80 and D7000 image files.
Tags: bash, EXIF, exiv2, jhead, JPG, NEF, rotate
Posted by Hans-Henry Jakobsen
02 Sep 2008 Rename files by wildcard pattern and correct the EXIF timestamp metadata
This is a little script I’ve written to correct all my image files since the EXIF timestamp information is one hour out of sync. The filenames have been renamed to comply to the EXIF information and has to be renamed again because of the one hour scew. The filename can look something like this 20080102-1201_DSC_0910.JPG where the name is built up like YYYYMMDD-HHMM_Original_Filename.JPG
Remember to backup your imagefiles before you continue. You have been warned!
Rename files using wildcard pattern
This is the files we are going to rename
20080102-1201_DSC_0910.JPG 20080105-1923_DSC_1006.JPG 20080111-1220_DSC00189.JPG 20080122-0929_DSC00190.JPG
The mmv command is a command that lets you move/copy/append/link multiple files by wildcard patterns. It can be installed in Debian (or Debian based distributions like Ubuntu) by issuing the command
# aptitude install mmv
Now rename the files back to their original name
# mmv "*_DSC*" "DSC#2"
The result after this operation looks like this
DSC_0910.JPG DSC_1006.JPG DSC_1179.JPG DSC_1302.JPG DSC_1587.JPG
Correct the EXIF timestamp using exiv2
Next adjust the EXIF information stored in the image files to fix the one hour difference. This can be done using different EXIF tools like exiftool, but I will show you how it can be done using jhead and exiv2. The advantage with exiv2 is that it can also handle Nikon NEF files while jhead only can prosess JPG.
The current timestamp can be determined as follows
# exiftool DSC_0910.JPG | grep "File Mo"
The result in this case is
File Modification Date/Time : 2008:01:02 08:34:09
Adjust EXIF time info one hour forward using exiftool
# exiftool -AllDates+=1 DSC_0910.JPG
Other tools that could have done the job
Adjust EXIF time info one hour forward using jhead
# jhead -ta +1 DSC_0910.JPG
Install the jhead package using aptitude as mentioned earlier for the mmv package
Adjust EXIF time info one hour forward using exiv2
# exiv2 ad -a 1 DSC_0910.JPG
Rename files back to YYYYMMDD-HHMM_Original_Filename.JPG
It is now time to rename the files back to the YYYYMMDD-HHMM_Original_Filename.JPG format I used before this operation. This operation has been describe in a previous post named Rename image files according to EXIF date
exiv2 -r'%Y%m%d-%H%M_:basename:' rename $(ls D*)
The script
#!/bin/bash -x # Needed software: # exiftool # exiv2 # mmv # Script tested on Nikon D80 and Sony Cybershot DSC-W12 files # Make a printout of how the files look like now ls -l > repair_name_and_exif_before.txt # Rename files to remove date formatting back to original name mmv "*_DSC*" "DSC#2" # Change EXIF info on JPG files (order is important) exiftool -overwrite_original -AllDates+=1 D*.JPG # Preserve date/time of original file when writing exiftool -overwrite_original '-DateTimeOriginal>FileModifyDate' D*.JPG # Change EXIF info on NEF files (order is important) exiftool -overwrite_original -AllDates+=1 '-DateTimeOriginal>FileModifyDate' D*.NEF # Preserve date/time of original file when writing exiftool -overwrite_original '-DateTimeOriginal>FileModifyDate' D*.NEF # Rename files back to date formatting (YYYYMMDD-HHMM_Filename) based on the new EXIF info exiv2 -r'%Y%m%d-%H%M_:basename:' rename $(ls D*) # Make a printout of how the files look like after conversion ls -l > repair_name_and_exif_after.txt
Tags: Debian, EXIF, exiv2, jhead, JPG, mmv, NEF, Nikon, rename, Sony
Posted by Hans-Henry Jakobsen
14 Jan 2008 Rename image files according to EXIF date
This rename trick can be run in Windows, Linux and even Mac since the commandline program I’m going to use, exiv2, is available in all three platforms. Rename all image files in current folder to the format YYYYMMDDHHMM_Filename.EXT
This has been tested on my Nikon D80 JPEG and NEF image files.
Linux
exiv2 -r'%Y%m%d-%H%M_:basename:' rename $(ls)
Windows (from the command prompt)
exiv2.exe -r %Y%m%d-%H%M_:basename: rename d*
Windows (in a MS-DOS batch file)
exiv2.exe -r %%Y%%m%%d-%%H%%M_:basename: rename d*
You have to add an extra % if you are going to use exiv2 in a Windows batch file, because % in batch files is treated as a variable and not as a switch to exiv2.
These examples require that you have access to the exiv2 program from the current folder.
Result
Now my image files have names like
20071022-1202_DSC_9727.JPG 20071022-1202_DSC_9727.NEF
Change in workflow
Since I rename all my files in the format YYYYMMDD-HHMM_Filename I’ve included it in my image “workflow” (a simple MS-DOS batch file) I wrote about in Rotate images depending on the EXIF orientation post.
This has been tested successfully on the Windows exiv2 version 0.16
The new batch file can be downloaded here.
Tags: D80, EXIF, exiv2, jhead, jpeg, ms-dos, NEF, Nikon, script
Posted by Hans-Henry Jakobsen
30 Dec 2007 Resize and watermark images using Imagemagick
This is a modified version of my Resize of images in a folder with imagemagick post back in February. Only difference this time is that i strips out EXIF tags and the script has been cleaned up a bit. Click on the image to see the result in full size.
#!/bin/bash
# Description:
# Script to resize JPG images to desired width defined in IMAGESIZE variable.
# EXIF tags is also removed from the result images.
# Software needed:
# jhead - http://www.sentex.net/~mwandel/jhead/
# imagemagick - http://www.imagemagick.org
IMAGESIZE="320 480"
for IMAGEFILE in $(ls|grep JPG)
do
for I in $IMAGESIZE
do
# create directories if needed
if [ ! -d $I ]
then
mkdir $I
fi
# Strip EXIF tag information from source file
jhead -purejpg $IMAGEFILE
# Resize file
base=`basename $IMAGEFILE .JPG`_Resized_$I.JPG
convert $IMAGEFILE -resize $I $base
# Watermark the file
width=`identify -format %w $base`
convert -background '#0008' -fill white -gravity center -size ${width}x15 \
-font Verdana -pointsize 10 \
caption:"Copyright © 2007 Pario.no" \
+size $base +swap -gravity south -composite $I/$base;
# delete resized file
rm $base
done
# Delete source file (DO NOT USE YOUR ORIGINAL FILE!)
rm $IMAGEFILE
done
You can download my resize, watermark bash script here.
Tags: bash, convert, imagemagick, jhead
Posted by Hans-Henry Jakobsen
18 Nov 2007 Strip EXIF tags from JPG files
Sometimes it’s a good idea to remove the hidden data a JPG file contains, like when you publish picures on the Internet.
An easy way to remove all EXIF-tags from your JPG files is to run the command using jhead
jhead -purejpg *.jpg
Posted by Hans-Henry Jakobsen
