add album art to audio files

add-album-art.sh

#!/usr/bin/env bash
set -o xtrace
set -o errexit
set -o nounset

if ! [ -x "$(command -v eyeD3)" ]; then
  # ubuntu package is old, try `pip install eyeD3[display-plugin]`
  sudo apt install eyed3
fi
audio="${1}"
image="${2}"
eyeD3 --add-image "${image}:FRONT_COVER" "${audio}"

# other usage hints
# removing things
# --user-text-frame='purl:' --user-text-frame='comment:'
# --user-text-frame='synopsis:' --user-text-frame='description:'
# --user-text-frame='compatible_brands:' --user-text-frame='minor_version:' --user-text-frame='major_brand:'

# adding typical fields
# --artist "" --album-artist "" --album ""
# --publisher "" --track-total 10 --release-date 2023-11-07