Bug 328282

Summary:	Rotating image removes XMP and IPTC metadata
Product:	[Applications] gwenview	Reporter:	Alan Pater <alan.pater>
Component:	general	Assignee:	Gwenview Bugs <gwenview-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	major	CC:	myriam, nate, richard.llom
Priority:	NOR
Version:	Other (add details in bug description)
Target Milestone:	---
Platform:	unspecified
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	Sample image after rotation. Sample image before rotation.

Description Alan Pater 2013-12-01 14:13:34 UTC

I opened a sample images in gwenview, rotated the image 90 degrees and re-saved the image.

Before the rotation the image contained many XMP & some IPTC metadata tags. After the rotation all that metadata was no longer stored in the image. The image size changed from 55kB to 35kB.


Reproducible: Always

Comment 1 Alan Pater 2013-12-01 14:14:22 UTC

Created attachment 83855 [details]
Sample image after rotation.

Comment 2 Alan Pater 2013-12-01 14:15:00 UTC

Created attachment 83856 [details]
Sample image before rotation.

Comment 3 Alan Pater 2013-12-09 06:35:52 UTC

The same thing happened with the gthumb image viewer, but has now been fixed.
    https://git.gnome.org/browse/gthumb/commit/?h=gthumb-3-2&id=9d504aa9c965f3ff2b33f13f8c5b5864ff8eba39

I also tested digikam and darktable. They did not remove the metadata.

Comment 4 Richard Llom 2014-03-28 12:01:09 UTC

I can confirm this here (Gwenview Version 4.12.2) and in one case even the EXIF data was lost.
Also the meta data lost is not noticeable at instant, only after a restart the rotated images doesn't show the metadata anymore.

Comment 5 Alan Pater 2014-04-21 02:16:11 UTC

Digikam does not destroy data when rotating an image. It offers to do the job simply by changing the orientation metadata, not by actually modifying the image.

I suspect gwenview actually modifies that image rather then simply modifying the orientation tag.

Comment 6 Alan Pater 2015-08-08 14:20:46 UTC

Retested with version 4.14.0 pre

Issue remains. Rotate function results in data lost.

Comment 7 Nate Graham 2017-09-09 13:43:59 UTC


*** This bug has been marked as a duplicate of bug 324597 ***