On 23/05/2026 15:47, CA Wills via dorset wrote:
Details: I have installed the Mint 22.3 (latest updates) 64bit, Cinnamon, Kernal=-generic.
on my laptop:-
heif-gdk-pixbuf 1.17.6-1ubuntu4.3
heif-thumbnailer 1.17.6-1ubuntu4.3
libheif-plugin-anmdec 1.17.6-1ubuntu4.3
libheif-plugin-libde256 1.17.6-1ubuntu4.3
lidheif1 1.17.6-1ubuntu4.3

Clive,

A search for "heif" in aptitude in Kubuntu revealed some additional packages to try:

terry@optiplex:~$ sudo apt search heif
heif-gdk-pixbuf/resolute 1.21.2-3 amd64
 HEIF and AVIF file format decoder and encoder - gdk-pixbuf loader

heif-thumbnailer/resolute 1.21.2-3 amd64
 HEIF and AVIF file format decoder and encoder - thumbnailer

heif-view/resolute 1.21.2-3 amd64
 HEIF and AVIF file format decoder and encoder - heif sequence viewer

imv/resolute 5.0.1-3 amd64
 X11/Wayland image viewer intended for use with tiling window managers

kodi-imagedecoder-heif/resolute 21.0.3+ds-1 amd64
 HEIF image decoder for Kodi

libheif-dev/resolute 1.21.2-3 amd64
 HEIF and AVIF file format decoder and encoder - development files

libheif-examples/resolute 1.21.2-3 amd64
 HEIF and AVIF file format decoder and encoder - examples

libheif-plugin-aomdec/resolute,now 1.21.2-3 amd64 [installed,automatic]
 HEIF and AVIF file format decoder and encoder - aomdec plugin

libheif-plugin-aomenc/resolute,now 1.21.2-3 amd64 [installed,automatic]
 HEIF and AVIF file format decoder and encoder - aomenc plugin

libheif-plugin-dav1d/resolute 1.21.2-3 amd64
 HEIF and AVIF file format decoder and encoder - dav1d plugin

libheif-plugin-ffmpegdec/resolute 1.21.2-3 amd64
 HEIF and AVIF file format decoder and encoder - ffmpegdec plugin

libheif-plugin-j2kdec/resolute,now 1.21.2-3 amd64 [installed,automatic]
 HEIF and AVIF file format decoder and encoder - j2kdec plugin

libheif-plugin-j2kenc/resolute 1.21.2-3 amd64
 HEIF and AVIF file format decoder and encoder - j2kenc plugin

libheif-plugin-jpegdec/resolute 1.21.2-3 amd64
 HEIF and AVIF file format decoder and encoder - jpegdec plugin

libheif-plugin-jpegenc/resolute 1.21.2-3 amd64
 HEIF and AVIF file format decoder and encoder - jpegenc plugin

libheif-plugin-kvazaar/resolute 1.21.2-3 amd64
 HEIF and AVIF file format decoder and encoder - kvazaar plugin

libheif-plugin-libde265/resolute,now 1.21.2-3 amd64 [installed,automatic]
 HEIF and AVIF file format decoder and encoder - libde265 plugin

libheif-plugin-rav1e/resolute 1.21.2-3 amd64
 HEIF and AVIF file format decoder and encoder - rav1e plugin

libheif-plugin-svtenc/resolute 1.21.2-3 amd64
 HEIF and AVIF file format decoder and encoder - svtenc plugin

libheif-plugin-x265/resolute,now 1.21.2-3 amd64 [installed,automatic]
 HEIF and AVIF file format decoder and encoder - x265 plugin

libheif-plugins-all/resolute 1.21.2-3 amd64
 HEIF and AVIF file format decoder and encoder - plugins metapackage

libheif1/resolute,now 1.21.2-3 amd64 [installed,automatic]
 HEIF and AVIF file format decoder and encoder - shared library

librust-avif-serialize-dev/resolute 0.8.6-2 amd64
 Minimal writer for AVIF header structure (MPEG/HEIF/MIAF/ISO-BMFF) - Rust source code

librust-libheif-rs-dev/resolute 2.6.1-1 amd64
 Safe wrapper around libheif-sys to parse heif/heic files - Rust source code

librust-libheif-sys-dev/resolute 5.2.0-1 amd64
 Libheif bindings - Rust source code

librust-nom-exif-dev/resolute 2.5.4-1 amd64
 Exif/metadata parsing library written in pure Rust, both image (jpeg/heif/heic/jpg/tiff etc.) and video/audio (mov/mp4/3gp/webm/mkv/mka, etc.) files are supported - Rust source code

mat2/resolute,resolute 0.14.0-1ubuntu1 all
 Metadata anonymisation toolkit v2


Maybe you have these on Mint?  Resolute looks promising.

--
Terry Coles
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