Hello Carl,
Thank you for your explanations.
On 24/06/2025 18:24, 'Carl von Einem' via hugin and other free panoramic
software wrote:
Hello Frederic,
as a first step I would have a look at the metadata stored in two of
those problematic files with identical time stamps using ExifTool by
Phil Harvey. If that isn`t already working on your system you can get
instructions for your OS on www.exiftool.org
I had not thought of this, but indeed Hugin usually copies the date &
time info when doing panoramas. I checked with panoramas I assembled a
few days ago, the date & time info are copied. It seems that this does
not work for time lapse.
I can only describe the way to get it running on Mac OS X or Ubuntu
(in my case it is Xubuntu). Or just check out this terminal command to
find out if it is already working on your system:
- check the version number:
exiftool -ver
- or you may want to find out where it is installed:
which exiftool
It works if you get something back like this
carl@carl-MacPro:~$ exiftool -ver
12.76
Hugin for Windows contains the perl version of exiftool, but I found the
equivalent command line and got "13.10".
then just type the command
exiftool
and also add a blank.
Now drag one of the files into the terminal window to include the path
to the file and click on the enter/return button of your keyboard.
This will list all metadata your image file contains.
My Nikon files also include subseconds like here in one of my example
files:
Date/Time Original: 2025:04:28 16:00:24.49
and also the original file number:
File Number: 7798
To avoid situations like the one you mentioned I always use an
exiftool renaming command (example below) to process the names of my
RAW (NEF) files. My Nikon typically saves NEF as well as JPG files It
uses a similar structure like your YYYYMMDD_hhmmss but also adds the
original file number that is part of that very simplistic "IMG_1234"
naming scheme.
my original file _CVE9170.NEF in folder /home/carl/Bilder/
using this exiftool command (working on Mac as well as on Linux, it
should be one line without a line break)...
exiftool '-FileName<${CreateDate}_$filenumber.%e' -d
cve_%Y%m%d-%H%M%S%%-c /home/carl/Bilder/
... processes all files in folder "Bilder" and results in my above
example file renamed to
cve_20250607-134405_9170.NEF
I also use a similar script to rename the original RAW & JPEG files
generated by my camera, so that all my files are named using the
YYYYMMDD_HHmmSS format. I don't remember why I chose exiv2 rather than
exiftool, but my script uses exiv2: exiv2 -t -F [file name]. My problem
is that when generating the time lapse, Hugin renames all the files to
[pto file name]_[sequential number], so that the generated files have
different names from the original files, and that, as I explained above,
Hugin does not copy the date & time info. For my example, the date of
all the pictures was the same, but the time of course changed and I have
no way of recovering it.
Does that help?
Cheers,
Carl
Am 23.06.25 um 23:40 schrieb Frederic Da Vitoria:
Hello,
I have used Hugin to generate a kind of time-lapse from 91 images. Not a
real time-lapse, because the images are not evenly spaced, sometimes
they
are a few minutes distant, sometimes I have 2 images in one second.
After
carefully cleaning the control points, I got Hugin to generate me
the aligned images using Remapped images: No exposure correction, low
dynamic range. So far, so good.
My problem is that while I started with images named
20250616_224427.jpg,
20250616_224428.jpg, 20250616_224430.jpg and so on, the aligned
images were
named 20250616_224427 -
20250616_225537_1_exposure_layers_0000.tif, 20250616_224427 -
20250616_225537_1_exposure_layers_0001.tif, 20250616_224427 -
20250616_225537_1_exposure_layers_0002.tif and so on. I have lost the
real
time info in the name, and the aligned images don't have any
EXIF/IPTC data
from which I could rename them back to their original names.
Is there a way to recover the original names?
Frederic Da Vitoria
(davitof)
Membre de l'April - « promouvoir et défendre le logiciel libre » -
http://www.april.org
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