Downsample
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.