https://bugs.kde.org/show_bug.cgi?id=493388
Bug ID: 493388
Summary: Inconsistent timeline display due to timezone handling
in videos vs. photos
Classification: Applications
Product: digikam
Version: 8.4.0
Platform: Other
OS: Other
Status: REPORTED
Severity: normal
Priority: NOR
Component: Albums-MainView
Assignee: digikam-bugs-n...@kde.org
Reporter: iwannaber...@gmail.com
Target Milestone: ---
Created attachment 173900
--> https://bugs.kde.org/attachment.cgi?id=173900&action=edit
IMG_7934.JPG
SUMMARY
I’ve noticed an issue with Digikam’s timeline when handling media from iPhones.
Specifically:
Videos recorded on iPhones (at least iPhone 13 mini) store the date and
time in the XMP metadata, which includes timezone information.
Photos, however, only contain EXIF metadata, which typically lacks timezone
data.
As a result, videos appear several hours later than the corresponding photos on
the timeline, even though they were taken around the same time.
STEPS TO REPRODUCE
1. Import both photos and videos taken with an iPhone into Digikam.
2. Browse the album to see the chronological order of the media.
3. Observe the placement of photos versus videos that were taken at roughly the
same time.
OBSERVED RESULT
Videos appear several hours later than the corresponding photos on the
timeline, even though they were captured at nearly the same time. This happens
because the videos have timezone information stored in the XMP metadata, while
the photos only contain EXIF metadata without timezone data.
EXPECTED RESULT
Both photos and videos should appear at the same point on the timeline,
regardless of the presence of timezone information. Ideally, Digikam should
provide an option to ignore timezone data in videos, so that both photos and
videos are displayed consistently based on local time.
SOFTWARE/OS VERSIONS
Windows: Windows 10 22H2
Digikam 8.4.0
ADDITIONAL INFORMATION
As an example, see files IMG_7933.MOV and IMG_7934.JPG taken roughly at the
same time.
IMG_7934.JPG has the EXIF DateTimeOriginal 2024:09:15 06:36:52
IMG_7933.MOV has the XMP CreationDate 2024:09:15 10:35:44 6:35:44 -4:00 and the
CreateDate 2024:09:15 10:35:44
(couldn't attach video file due to size restrictions, find it attached to this
link: http://158.101.198.126:9011/share/6AxPyi8H)
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