SUMMARY Since upgraded to kimageformats 5.100.0 Digikam no longer shows HEIF files. STEPS TO REPRODUCE 1. Install kimageformats 5.100.0 2. Start Digikam OBSERVED RESULT New heif image thumbnails are no longer generated and larger previews are no longer showing. digikam.dimg.heif: Error while processing HEIF image: Unsupported feature: Unsupported codec digikam.dimg: "something.heic" : Cannot load file !!! digikam.general: mimetype = "HEIF" ext = "HEIC" digikam.general: Cannot create thumbnail for "something.heic" digikam.general: Thumbnail is null for "something.heic" EXPECTED RESULT SOFTWARE/OS VERSIONS KDE Plasma Version: 5.26.3 KDE Frameworks Version: 5.100 Qt Version: 5.15.7 ADDITIONAL INFORMATION Downgrading to kimageformats 5.99 makes it possible to load HEIF files within Digikam again. Change possibly related to the issue: https://github.com/KDE/kimageformats/commit/9ab64dbf223411098c21ec192f5181510db54ba1
The problem is fixed in digiKam-7.9.0. With libheif-1.13 a heif_init() and heif_deinit() is required in all applications that use libheif. digiKam does not use the kimageformats plugins to load heif images. Maik
If you want to patch digiKam-7.8.0, this would be the patch: https://invent.kde.org/graphics/digikam/-/commit/31df013ab9f8e7275f1eed2785e6dad5abad871a Maik
(In reply to Maik Qualmann from comment #2) > If you want to patch digiKam-7.8.0, this would be the patch: > > https://invent.kde.org/graphics/digikam/-/commit/ > 31df013ab9f8e7275f1eed2785e6dad5abad871a > > Maik I couldn't get it to compile with that. But compiling qt5-maintenance branch works. Thanks for this fantastic application!