A simple bash script for converting FLACs to ALAC files.

flac2alac.sh

#!/bin/bash

# A simple bash script for converting FLACs to ALAC files. 
# For example: ./flac2alac.sh flacs alacs
# Where "flacs" and "alacs" are the input and output directories respectively.

in=$1
out=$2

echo $in

# if [ $# -eq 0 ]
if [ -z "$in" ]; then 
        echo "No input provided"
        exit 1
    elif ! [ -d "$in" ]; then
        echo "Input is not a directory."
        exit 1
fi

if [ -z "$out" ]; then 
        echo "No output provided"
        exit 1
    elif ! [ -d $out ]; then
        echo "Output is not a directory."
        exit 1
fi

files="$in/*.flac"

for file in $files; do 
    # echo $file
    newFileName=${file%.flac}.m4a
    fileNameWithoutPath=${newFileName##*/}
    # echo $fileNameWithoutPath
    ffmpeg -i "$file" -c:v copy -c:a alac "$out/$fileNameWithoutPath"
done

echo "Done!"