https://bugs.kde.org/show_bug.cgi?id=409038
Bug ID: 409038
Summary: erroneous extraction of date metadata for videos
Product: digikam
Version: 6.1.0
Platform: openSUSE RPMs
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: Metadata-Date
Assignee: digikam-bugs-n...@kde.org
Reporter: k...@forum.titlis.org
Target Milestone: ---
Extracting the video date does not work correctly for an iPhone. The problem is
the interpretation of the timezone:
exif tag:| "Create Date" | "Creation Date"
---------------------|-----------------|---------
Panasonic Lumix GH4: | local timezone | N/A
iPhone5 SE | UTC | local timezone
Apparently, Digikam interpretes the exif "Create Date", which is correct for
Panasonic, but not for my iPhone, see image digikam-rename.png. My local
timezone is UTC+2.
Images are available here:
https://drive.google.com/drive/folders/1yHVOhvZMNWn2hGXgVPwoU0_841izpkPu
Unfortunately, there is no good solution to the problem since often the
timezone is not reflected in the metadata. With DK 6.1, it is still not
possible to use the correct video timestamp from within DK, but only via
exiftool.
Maybe a user-configurable database which maps the correct exif field to the
date used in DK based on the used video hardware? How do other tools handle the
problem?
Literature: https://sno.phy.queensu.ca/~phil/exiftool/TagNames/QuickTime.html
PS: for photos taken with iPhone, the "Create Date" or "Date/Time Original"
seems to be the local time zone. This issue only appears with videos
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