[dolphin] [Bug 483571] New: [Regression] Dolphin Incompatible with Alliance for Open Media (AOM) Compressed AVIF files (but OK for some others).

[John]

https://bugs.kde.org/show_bug.cgi?id=483571

            Bug ID: 483571
           Summary: [Regression] Dolphin Incompatible with Alliance for
                    Open Media (AOM) Compressed AVIF files (but OK for
                    some others).
    Classification: Applications
           Product: dolphin
           Version: 24.02.0
          Platform: Arch Linux
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: view-engine: icons mode
          Assignee: dolphin-bugs-null at kde.org
          Reporter: kdelovaa at mozej.com
                CC: kfm-devel at kde.org
  Target Milestone: ---

Created attachment 167181
  --> https://bugs.kde.org/attachment.cgi?id=167181&action=edit
AOM Compressed AVIF- Dolphin Cannot Display Thumbnail (Gwenview OK).

SUMMARY
***
Dolphin (see what is installed in additional info below) cannot display
thumbnails for certain AOM compressed AVIF files (avifenc). Some are displayed
but some are not. Gwenview can open them properly and displays thumbnails.
Dolphin cannot display thumbnails for such AOM compressed photos. I give you an
attatchment as example. Some other compressed AVIF files Dolphin displays
properly. Since I have tons of AVIF (AOM) compressed photos all fail to display
as thumbs in Dolphin (I made them in KDE 5 and there all was OK. Only KDE6
suddenly stopped supporting them, i.e. Dolphin has no thumbs. Gwenview displays
them and has thumbnails). Talk about shared libraries (!) between KDE projects
(Gwenview and Dolphin). See what is installed below in additional info.
***


STEPS TO REPRODUCE
1. Get the attatchment
2. Open it in Dolphin
3. No thumbnail

OBSERVED RESULT
No thumbnail for this AOM compressed photos. (Gwenview OK).

EXPECTED RESULT
Fix the regression. Make Dolphin be compatible with AOM Compressed AVIFs. Just
like in KDE 5.

SOFTWARE/OS VERSIONS:
KDE Plasma Version: 6.0.1
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2
Graphics Platform: X11
Graphics Processor: Intel Only

ADDITIONAL INFORMATION:
$ pacman Qs 'xxxx':
kdesdk-thumbnailers 24.02
kdegraphics-thumbnailers 24.02
ffmpegthumbs 24.02
qt6-imageformats 6.6.2
kimageformats 6.0.0
libpng 1.6.43
libavif 1.0.4
libheif 1.17.6
libwebp 1.3.2
libjxl 0.10.2
webp-pixbuf-loader 0.2.7
libjpeg-turbo 3.0.2
openjpeg2 2.5.2

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