Bug 472038

Summary:	Potential poor quality / wrong orientation thumbnails from jpg images
Product:	[Applications] dolphin	Reporter:	Paul <pip.kde>
Component:	general	Assignee:	Dolphin Bug Assignee <dolphin-bugs-null>
Status:	REPORTED ---
Severity:	normal	CC:	kfm-devel
Priority:	NOR
Version:	23.04.2
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	Screen shot showing poor quality / wrong orientation thumbnails when using the exif thumbnail from jpg images

Description Paul 2023-07-07 10:07:32 UTC

SUMMARY

This is not a Dolphin bug per se, but as Dolphin is an application in which this issue is most likely seen I would like to draw it to the attention of Dolphin's developers.

Recently the way in which the thumbnailer for jpg images works has changed. If the jpg image has exif data that contains a thumbnail, that thumbnail is used rather than the thumbnailer creating a thumbnail image, presumably for speed reasons. However, the exif thumbnail is of variable, generally low, quality, and the orientation my be incorrect. See attached screenshot.

A bug report has been raised re this issue:
https://bugs.kde.org/show_bug.cgi?id=466658
but so far has had no developer response.

SOFTWARE/OS VERSIONS
Operating System: openSUSE Tumbleweed 20230705
KDE Plasma Version: 5.27.6
KDE Frameworks Version: 5.107.0
Qt Version: 5.15.10

Comment 1 Paul 2023-07-07 10:09:22 UTC

Created attachment 160118 [details]
Screen shot showing poor quality / wrong orientation thumbnails when using the exif thumbnail from jpg images