I can't tell the difference between a 32KBps and 224KBps mp3 file. Can you?
So I'm down-sampling all my mp3s to fit on my new mp3 player. I should be able to fit around 3 days of music onto my 1GB player this way.
Here's a script to do that---a work in progress
#!/bin/sh
## Compressmp3s - Copyright 2007 Hal Canary
## Dedicated to the Public Domain.
## Arguments: a list of directories to search for mp3s
## This script will use lame to create a 32kbps version
## of those mp3 and save it in a subdirectory of $TARGETDIR
if [ "$#" -lt 1 ] ; then
echo "Give me an argument!"
exit 1
fi
TARGETDIR="$HOME/tmp/CompressedAudio"
mkdir -p "$TARGETDIR" || {
echo "Use a directory you have permissions for.";
exit 1 ; }
## for FILE in "$@" ; do
find "$@" -name '*.mp3' | while read FILE; do
IN="$FILE"
OUT="${TARGETDIR}/$FILE"
## Grab the id3 info for later use
artist=`id3info "$IN" | grep TPE1 | \
awk -F ': ' '{print $2}'`
album=`id3info "$IN" | grep TALB | \
awk -F ': ' '{print $2}'`
track=`id3info "$IN" | grep TRCK | \
awk -F ': ' '{print $2}'`
song=`id3info "$IN" | grep TIT2 | \
awk -F ': ' '{print $2}'`
echo "$OUT"
## refuse to clobber a file
if [ ! -f "$OUT" ] ; then
echo " artist=$artist"
echo " album=$album"
echo " track=$track"
echo " song=$song"
echo ""
DIRECTORY=`dirname "$OUT"`
mkdir -p "$DIRECTORY" || { echo "permission error" ;
exit 1 ; }
lame -b 32 "$IN" "$OUT" \
--ta "$artist" --tl "$album" \
--tn "$track" --tt "$song" \
--add-id3v2
else
echo " already exists!"
fi
done
Okay, on some files, I *can* tell the difference.
* * *
Compare: 032kbps mp3 versus 128kbps mp3.