[Bug 2144323] Re: Error saving from .png to .avif

[Willow Carlson-Huber]

** Description changed:

  [ Impact ]
  
  * Exporting to AVIF succeeds, but raises an error message anyway.
  
  [ Test Plan ]
  
  * Import an image.
  * Select File > Export and choose AVIF as the target format.
+ * The image should be exported without raising an error message.
  
  [ Where problems could occur ]
  
- * While working on the patch, I found an issue where the export function
- could become unusable. The most recently-used export format is saved
- between runs, and if that format disappears, opening the export menu
- will cause the app to crash (see src/dialogs/ExportDialog.vala:147).
- This patch doesn't remove any formats, but if some other interaction
- results in a format disappearing, it could expose this issue.
+ * Because this problem is caused by a lack of metadata write support in
+ gexiv2 (and fixed by skipping metadata on formats that don't support
+ it), metadata still won't be exported to AVIF files.
  
  [ Original report follows ]
  
  Try to save a .png file to .avif format
  Shotwell shows an error mesage but .avif file is succesfully created
  
  ProblemType: Bug
  DistroRelease: Ubuntu 26.04
  Package: shotwell 0.32.13-2ubuntu1
  ProcVersionSignature: Ubuntu 6.19.0-9.9-generic 6.19.5
  Uname: Linux 6.19.0-9-generic x86_64
  ApportVersion: 2.33.1-0ubuntu3
  Architecture: amd64
  CasperMD5CheckResult: pass
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Mar 13 14:52:29 2026
  InstallationDate: Installed on 2026-03-10 (3 days ago)
  InstallationMedia: Ubuntu 26.04 LTS "Resolute Raccoon" - Daily amd64 
(20260310)
  ProcEnviron:
   LANG=en_US.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   TERM=xterm-256color
   XDG_RUNTIME_DIR=<set>
  SourcePackage: shotwell
  UpgradeStatus: No upgrade log present (probably fresh install)

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Title:
  Error saving from .png to .avif

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