bitrate

#!/bin/bash
 
mediainfo "$1" | grep "Bit rate"

reencode

#!/bin/bash

SAVEIFS=$IFS
IFS=$(echo -en "\n\b")

for dir in `ls -1`; do
  pushd "$dir"
  for file in `ls -1 *.mp3`; do
    echo "converting $file"
    lame --preset extreme "$file" "${file}.tmp"
    rm -f "$file"
    mv "${file}.tmp" "$file"
  done
  popd
done

IFS=$SAVEIFS