flac2alac.sh

#!/bin/bash
#
# Finds all *.flac files and produces corresponding *.m4a ALAC versions
#
# Usage: flac2alac <file|dir>...

{
  for obj in "$@"; do
    if [ -f "$obj" ]; then 
      echo "$obj" 
    elif [ -d "$obj" ]; then
      find "$obj" -iname '*.flac'
    fi
  done
} | while read src; do
  dst="${src%.*}.m4a"
  if [ "$src" -nt "$dst" ]; then
    echo "$src -> $dst"
    tmp="${src%.*}.tmp.m4a"

    ffmpeg -i "$src"  \
      -nostdin        \
      -vn             \
      -c:a alac       \
      -y "$tmp" && mv "$tmp" "$dst"

    # ffmpeg doesn't exit via SIGINT when it gets SIGINT
    [ $? == 255 ] && exit
  fi
done

# vim:ts=2:sw=2:sts=2:et:ft=sh