clicketyclack / dcim-renamer

Ever ended up with a bunch of DCIM files? Ever want to rename them after the DCIM numbering restarts?

dcim-renamer

Have you ever shot so many DCIM files that the numbering restarted, leaving you with multiple copies of IMG_0001.JPG?

Have you ever accidentally merged / overwritten DCIM files from multiple sources such as your DSLR and your cell?

Have you ever copied / transferred your DCIM files then realized that your file manager has reset the timestamp of the files, making sorting a pain?

This script will help you rename your images from this:

DCIM/At the zoo/IMG_6035.jpg
DCIM/IMG_0071.JPG
DCIM/IMG_0072.JPG
DCIM/IMG_0080.JPG
DCIM/Sports event/IMG_0071.JPG
DCIM/Sports event/IMG_0072.JPG
DCIM/Sports event/IMG_0073.JPG
DCIM/Wedding/IMG_5301.JPG
DCIM/Wedding/IMG_5302.JPG
DCIM/Wedding/IMG_5303.JPG
DCIM/Wedding/IMG_5304.JPG
DCIM/Wedding/IMG_5305.JPG
DCIM/Wedding/IMG_7001.JPG
DCIM/Wedding/IMG_7002.JPG
DCIM/Wedding/IMG_7003.JPG
DCIM/Wedding/IMG_7004.JPG
DCIM/Wedding/IMG_7005.JPG
DCIM/Wedding/IMG_7006.JPG

to this:

DCIM/2017_02_30_024414_7Dmk1_Second_IMG_0072.jpg
DCIM/2017_07_30_024414_7Dmk1_First_IMG_0071.jpg
DCIM/2018_08_30_024414_80D_IMG_0080.jpg
DCIM/At the zoo/2018_12_27_174947_600D_IMG_6035.jpg
DCIM/Sports event/2015_05_05_151515_D800_IMG_0071.jpg
DCIM/Sports event/2015_05_05_151515_D800_IMG_0072.jpg
DCIM/Sports event/2015_05_05_151515_D800_IMG_0073.jpg
DCIM/Wedding/2014_08_04_175830_70D_IMG_7001.jpg
DCIM/Wedding/2014_08_04_175840_5Dmk3_IMG_5301.jpg
DCIM/Wedding/2014_08_04_175850_70D_IMG_7002.jpg
DCIM/Wedding/2014_08_04_175900_5Dmk3_IMG_5302.jpg
DCIM/Wedding/2014_08_04_175910_5Dmk3_IMG_5303.jpg
DCIM/Wedding/2014_08_04_175920_70D_IMG_7003.jpg
DCIM/Wedding/2014_08_04_175930_70D_IMG_7004.jpg
DCIM/Wedding/2014_08_04_175940_70D_IMG_7005.jpg
DCIM/Wedding/2014_08_04_175950_5Dmk3_IMG_5304.jpg
DCIM/Wedding/2014_08_04_180000_5Dmk3_IMG_5305.jpg
DCIM/Wedding/2014_08_04_180010_70D_IMG_7006.jpg

Usage

1. Backup all your files before running a script that may recursively clobber your photo collection!

2. Run the dcim_renamer.py script on a directory. The script will generate (hopefully) appropriate mv commands. Usually you will want to redirect the output to a .sh script, as follows: ./dcim_renamer.py DCIM/ > /tmp/rename.sh

3. Review the script for sanity checks. Depending on your platform you may need to replace mv with move and rename the output to .bat. You may also want to search/replace the command for interactive prompts before each rename.

4. Run the script.

5. Restore your images from backup Just kidding. But see the warranty notes¹. Remember that you are running a script from the internet on your photo collection.

¹ This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.

Creating testdata.

Since we don't want to check in a bunch of 30MB raw images from an actual camera, the testdata images should be small (32x32px) images with manually crafted exiv2 tags. Hint: tags can be set as follows:

$ exiv2 -M"add Iptc.Application2.Credit String Mr. Smith" image.jpg

Testdata directory layout.

• DCIM/ Root with a few canon samples.
• Sports event/ Multiple images with the same timestamp due to burst shooting.
• Wedding/ Two cameras with mismatched image sequence numbers. Adding datetimes and body name to the file names will help here.
• At the zoo/ A "zoo" of camera makers / models. Put images here if you want testdata to accompany your bug report.