LinuxQuestions.org - Anyone knows about AAC to MP3 converter

m4a2mp3

Code:

#!/bin/sh

#

# m4a to wav to mp3



for i in *.m4a; do

    faad "$i"

    x=`echo "$i"|sed -e 's/.m4a/.wav/'`

    y=`echo "$i"|sed -e 's/.m4a/.mp3/'`

    lame -h -b 192 "$x" "$y"

    # Comment the line below if you want to keep the .wav files

    rm "$x"

done

Obviously, you need faad2 and lame installed.

While I'm at it... ;)

m4a2wav

Code:

#!/bin/sh

#

# m4a to wav



for i in *.m4a; do

    faad "$i"

done

You need faad for that one

mp32wav

Code:

#!/bin/sh

#

# mp3 to wav

#

# This script will encode ALL .mp3's in the working

# directory to .wav format. No need to pass any arguments.

# Especially usefull for preparing a group of files

# to be burned to an audio CD.



for i in *.mp3; do

    echo "$i"

    tgt=$(echo "$i" | sed -e "s/mp3/wav/")

    mpg123 -b 10000 -s -r 44100 "$i" | sox -t raw -r 44100 -s -w -c2 - "$tgt"

done

You need mpg123 and sox for that one

wma2mp3

Code:

#!/bin/bash

#



#############################################################

# Move the conversion process into a function that can

# be called.

# The "&&" makes it so each step must be successful before

# the next step will be done.

#############################################################

function wma2mp3 () {

  if [ ! -f "$1" ]; then

    echo "File $1 not found!"

  else

    mplayer -ao pcm -aofile "${1%%.[Ww][Mm][Aa]}.wav" "$1" &&

    lame -h -b 192 "${1%%.[Ww][Mm][Aa]}.wav" "${1%%.[Ww][Mm][Aa]}.mp3" &&

    rm -f "${1%%.[Ww][Mm][Aa]}.wav" ||

    echo "There was a problem with the conversion process!"

  fi

}



#############################################################

# Not enough information to compute

#############################################################

if [ $# -lt 1 ]; then

  echo

  echo "Usage:  wma2mp3 myfile.wma"

  echo "        wma2mp3 myfile.wma myfile2.wma myfile3.wma"

  echo '        wma2mp3 "my file with spaces in the name.wma"'

  echo '        wma2mp3 "file with spaces 1.wma" "file with spaces 2.wma"'

  echo '        wma2mp3 "*.wma"'

  echo "        wma2mp3 /directory/containing/wma/files"

  echo

  exit

fi



#############################################################

# Directory was passed so convert all wma files in directory

#############################################################

if [ $# -eq 1 -a -d "$1" ]; then

  for file in $1/*.[Ww][Mm][Aa]

  do

    wma2mp3 "$file"

  done

  exit

fi



#############################################################

# One or more wma files were passed, convert them

#############################################################

for file in $*

do

  wma2mp3 "$file"

done



exit

EDIT: That one is all screwed up. I fixed it on the wiki tho...

You need mplayer and lame for that one. Notice above that you HAVE to name that script "wma2mp3"....

That opens up some options using one or more in tandem.... I still need to clean up some of that. I got burned out on this awhile ago. They all work tho. Just the usage needs to be tweaked...

Actually, If I'm not mistaken, faad2 comes with an XMMS plugin that works flawlessly with .m4a's... I think it's faad2... Been awhile...