Convert almost any media by extension to m4a

convert_to_m4a.sh

#!/usr/bin/env bash

# This script convert flac files into ALAC m4a

# Execute it by calling this script and append full path to dir as
# flac_mp4.sh "/media/joakim/VERBATIM/Avril Lavigne/"
# you can use "${PWD}" if you which to execute this script from
# current dir

# exit on any errors
set -e #-x

_ext=(flac) # e.g. flac mp4 webm opus mp3

_basedir="${1}"

# change to basedir
printf "You are converting from ${_basedir}\n"

cd "${_basedir}"

# Find any files in subfolders and add them to the array

readarray -d '' array < <(for i in "${_ext[@]}"; do find . -type f -iname "*.$i" -print0 ; done)

for i in "${array[@]}"
do printf "converting $i\n"
#ffmpeg -i "$i" -map 0:a:0 -y -v 0 -c:v copy -c:a alac -map_chapters -1 "${i%.*}".m4a && rm -f "$i"
ffmpeg -i "$i" -map 0:a:0 -y -v 0 -c:v copy -c:a alac -map_chapters -1 "${i%.*}".m4a
done


# Some sources had chapters which broke conversion
#mkdir -p "${subdir}/chap"
#ffmpeg -i "$i" -y -v 0 -c copy -map_chapters -1 "chap/${i}"

Flipped default delete behavior....