libavif version note

[0xb4lint]

Currently Debian 11 (bullseye, which is used in php-fpm Docker image until 8.0) only supports v0.8.4 libavif-bin package, however some avifdec options are only introduced in v0.9.3.

Right now v0.8.4's avifdec command produces the following error:
Too many positional arguments: 0

And unfortunately there's another issue with avifenc command's older version:
ERROR: Failed to encode image: No codec available (ref)

Removing the following avifdec parameters would fix the decoding command:

• --ignore-icc: Set PNG compression level (PNG only; 0-9, 0=none, 9=max). Defaults to libpng's builtin default.
• --no-strict: Disable strict decoding, which disables strict validation checks and errors
• --png-compress 0: If the input file contains an embedded ICC profile, ignore it

Unfortunately, there's no easy fix for avifenc's missing codec issue.

There 2 possible solutions for the situation:

• use Debian 12 (bookworm) which is the default for php:8.1-fpm and php:8.2-fpm Docker images
• add bullseye-backports as source and install a more recent version libavif-bin:

  echo "deb http://deb.debian.org/debian bullseye-backports main" | sudo tee -a /etc/apt/sources.list
  sudo apt install -t bullseye-backports libavif-bin

[freekmurze]

thanks!