[KPhotoAlbum] GPSDateStamp + GPSTimeStamp

Discussion:

Benny Simonsen

2018-04-28 15:37:45 UTC

Hey

Pictures taken with my phone are sorted wrong

They does not contain a DateTime field in the Exif.Image section of exif
data.
They contain a GPSDateStamp + GPSTimeStamp in Exif.GPSInfo section of exif
data.
... and the file date is set to when they have been copied from the phone,
so it is not usable.

Does this work for you - and how?

OS: Linux Mint 18.3 (Ubuntu 16.04)
KPhotoalbum: New from git.
Note jhead can't read the GPSDateStamp + GPSTimeStamp, but I can see them
in KPhotoalbum Exif viewer.

Example image: Loading Image...

Johannes Zarl-Zierl

2018-04-28 22:04:00 UTC

Permalink

Hi Benny,

When I encounter images with incomplete metadata, I usually fix the images
before import. This way, not only KPA but also other tools get the date/time
right.

In my experience, using the time from the filename is more robust than using
GPS data, because the GPS data is often missing from indoor photos.

For your example image, this little bash snippet should do the job:

for f in img_*.jpg
do
# extract date/time from filename:
dt="${f/img_/}"
dt="${dt/.jpg/}"
# set CreateDate if not already there:
exiftool -d "%Y%m%d_%H%M%S" -if 'not $exif:CreateDate' -createdate="$dt" "$f"
done

HTH,
Johannes

Post by Benny Simonsen
Hey
Pictures taken with my phone are sorted wrong
They does not contain a DateTime field in the Exif.Image section of exif
data.
They contain a GPSDateStamp + GPSTimeStamp in Exif.GPSInfo section of exif
data.
... and the file date is set to when they have been copied from the phone,
so it is not usable.
Does this work for you - and how?
OS: Linux Mint 18.3 (Ubuntu 16.04)
KPhotoalbum: New from git.
Note jhead can't read the GPSDateStamp + GPSTimeStamp, but I can see them
in KPhotoalbum Exif viewer.
Example image: http://slbs.dk/img_20160508_205637.jpg
--------------------+-------------------------------------------------------
--- Tag |Value
--------------------+-------------------------------------------------------
--- Orientation |Top-left
Model |Nexus 6
Image Width |4160
Image Length |3120
Manufacturer |motorola
X-Resolution |72
Y-Resolution |72
Resolution Unit |Inch
F-Number |f/2,0
Focal Length |3,8 mm
Aperture |2,00 EV (f/2,0)
Pixel X Dimension |4160
Shutter Speed |-7,81 EV (224 sec.)
ISO Speed Ratings |40
Pixel Y Dimension |3120
Exposure Time |1/226 sec.
Exif Version |Exif Version 2.1
FlashPixVersion |FlashPix Version 1.0
Color Space |Internal error (unknown value 65535)
GPS Date |2016:05:08
Altitude Reference |Sea level
East or West Longitu|E
Longitude |10, 0, 36,44
North or South Latit|N
GPS Time (Atomic Clo|18:56:26,00
Altitude |49,00
Latitude |57, 6, 26,52
--------------------+-------------------------------------------------------
---
Br,
Benny

Benny Simonsen

2018-04-29 08:47:49 UTC

Permalink

Hi,

Johannes,
I can see that the GPS date/time is missing on some of the indoor and
outdoor images as well. All videos are "missing" exif data as well.
Therefore using the date info from the images instead would be the way to
go.
I think I will just touch the images, just because I don't want to modify
the original images - knowing that it gives other limitations.

Thank you for the help.

Br,
Benny