Bug 338082

Summary:	Support HDR DNG images from HDRMerge
Product:	[Applications] gwenview	Reporter:	DrSlony <bugs>
Component:	general	Assignee:	Gwenview Bugs <gwenview-bugs-null>
Status:	RESOLVED FIXED
Severity:	wishlist	CC:	bugs, myriam, nate
Priority:	NOR
Version First Reported In:	Other (add details in bug description)
Target Milestone:	---
Platform:	Gentoo Packages
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description DrSlony 2014-08-06 23:35:49 UTC

HDRMerge is an awesome FOSS program from Javier Celaya for generating a high dynamic range raw image in the DNG format from a bracketed raw set.
https://github.com/jcelaya/hdrmerge

Please add support for correctly displaying the thumbnails from these raw images. They follow standards and should therefore be supported.
You can download a sample image from:
http://rawtherapee.com/shared/test_images/hdrmerge_045.dng

Currently Gwenview shows only the thumbnail of the first HDR DNG image in a folder. If there is more than one, the other images get the thumbnail of the first image. Furthermore, clicking on the DNG shows "Loading 'hdrmerge_045.dng' failed. Loading meta information failed".
http://i.imgur.com/aTbXMEa.png

Comment 1 DrSlony 2014-09-15 13:30:56 UTC

Still not supported in 4.14.0, and 4.14.0 is not available in the "version" combobox.

Comment 2 Nate Graham 2017-11-10 17:15:05 UTC

In Gwenview 16.x and up, thumbnails appear to be generated correctly when there are multiple .dng files in a directory.

Comment 3 DrSlony 2017-11-10 20:31:37 UTC

Gwenview 17.08.2 shows HDR DNG thumbnails correctly.

When clicking on a thumb, the preview is small, almost the same size as a thumb. I know that the files have large previews embedded, and it would be nice if Gwenview showed those large previews, though that's a separate issue.