Conversion functions to downgrade iPhone SE 2nd Gen media types

se-media.sh

#!/bin/bash


function heicSE() { 
  #-- org heic arch
  local bkup_file=~/Pictures/heic.tar

  #-- args 1: scale (50%) // 2: type (JPG) // 3: quality (80%)
  local dims_per=50
  [[ ! -z "$1" ]] && dims_per=$1

  local img_ext="jpg"
  [[ ! -z "$2" ]] && img_ext="$2"

  local qual_per=80
  [[ ! -z "$3" ]] && qual_per=$3

  #-- move *.HEIC to *.heic
  printf "Normalizing HEIC extensions...\n"
  for f in *.HEIC; do printf "  %s --> %s ..." "$f" "${f%.*}.heic"
    mv "$f" "${f%.*}.heic"
    echo
  done ; echo

  #-- heic file size // append on tar
  printf "HEIC total bytes: %s\n\n" "`du -ch *.heic | sed -n '$p;' | awk '{print $1}'`"
  printf "Backing up src *.heic ...\n"
  tar -rvf $bkup_file *.heic
  echo

  #-- calc # to convert
  cnt=0
  tot=$(ls -1 *.heic | wc -l | awk '{print $1}')
  printf "Converting %d to %s w/ %3d%% quality @ %3d%% size...\n" $tot "`<<<$img_ext tr '[:lower:]' '[:upper:]'`" $qual_per $dims_per

  #-- convert // copy exif // retouch date
  for f in *.heic; do cnt=$(( cnt+1 ))
    f2="${f%.*}.${img_ext}"
    printf "(%02d/%02d) %s [%-4s]-=/> %s ..." $cnt $tot "$f" "`du -h "$f" | awk '{print $1}'`" "$f2"
    convert "$f" -scale "${dims_per}%" -quality "${qual_per}%" "$f2"
    printf "[%s] // EXIF & touching..." "`du -h "$f2" | awk '{print $1}'`"
    exiftool -quiet -quiet -ignoreMinorErrors -preserve -overwrite_original_in_place -progress: -tagsFromFile "$f" "$f2"
    touch -r "$f" "$f2"
    echo
  done ; echo

  #-- delete *.heic
  printf "Removing src *.heic ..."
  rm -f *.heic
  echo

  #-- show dir date asc // combined file sizes // page exif
  ls -plah -tr
  printf "%s total bytes: %s\n\n" "`<<<$img_ext tr '[:lower:]' '[:upper:]'`" "`du -ch *.${img_ext} | sed -n '$p;' | awk '{print $1}'`"
  exiftool -fast -all -g -U -json -progress: -ext "$img_ext" . | jq -C '.' | less
}