Convert images to HEIC

convertheic.rb

#!/usr/bin/env ruby

# Convert images recursively to heic
# Prereq.: sudo apt install libheif-examples libimage-exiftool-perl

require 'fileutils'

CONVERTERS = {
  'heif-enc' => '-q 50 -o "%s" "%s"'
}

converter = CONVERTERS.find { |cmd, params| system("#{cmd}") }

Dir.glob('**/*.{jpg,png,PNG,JPG}').each do |image|
  heic_img = image.sub(/\.(jpg|png|PNG|JPG)$/, '.heic')
  if converter && !File.exist?(heic_img)
    mtime = File.mtime(image)
    puts "Converting #{image}..."
    success = system("#{converter[0]} #{sprintf(converter[1], heic_img, image)}")
    success_exif = system("exiftool -tagsFromFile #{image} #{heic_img}")
    FileUtils.touch(heic_img, :mtime => mtime) if success
    system("rm \"#{image}\"") if success
    system("rm \"#{heic_img}_original\"") if success && success_exif
  end
end