Convert your FLAC files to ALAC for Apple compatibility

Apple software can’t deal with your FLAC files.
Here we will cover how to make your lossless audio files converted to a more prominent, modern and Apple compatible format – ALAC (Apple Lossless).
So provided that you have your FLAC files in a directory somewhere, here’s a batch script you can run to easily migrate to ALAC format.

When you run this, you should have brew install ffmpeg at least. We run this on a OSX system, where our FLAC files are scattered somewhere in the Music directory of the currently logged in user.

set -euo pipefail

# Check for Music Library argument

# Change to Music Library directory or exit
cd "$MUSIC_LIB" || { echo "Failed to cd to $MUSIC_LIB"; exit 1; }

DEST="$(pwd)/Media.localized/Automatically Add to Music.localized/"
if [ ! -d "$DEST" ]; then

find . -name "*.flac" -print0 | while IFS= read -r -d '' FLAC_FILE; do
  ALAC_FILE="$(dirname "$FLAC_FILE")/$(basename "$FLAC_FILE" .flac).m4a"
  echo -n "Converting $FLAC_FILE ..."

  # Run the ffmpeg command
  # Why need -nostdin:
  ffmpeg -y -nostdin -i "$FLAC_FILE" -acodec alac -vcodec copy "$ALAC_FILE" >/dev/null 2>&1

  exit_status=$?  # store the exit status

  if [ $exit_status -eq 0 ]; then
    # Move to the beginning of the line, clear to the end of the line and print with a checkmark
    echo -e "\r\033[KConverted to $ALAC_FILE [✔]"
    # Delete the original .flac file
    rm -f "$FLAC_FILE"
    # If the FLAC file was in "/Not Added.localized/" then move the ALAC file
    if [[ -n "$DEST" && "$FLAC_FILE" == *"/Not Added.localized/"* ]]; then
      mv "$ALAC_FILE" "$DEST"
    echo -e "\r\033[KConversion failed for $FLAC_FILE [✘]"
  # Break after the first iteration for testing
  # break

See for up-to-date script.

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