convert_ogg_to_mp3

#!/bin/sh 
# (c) Mathias Laurin, Tokyo, 20070220, GPLv2 
# Dep: oggdec and lame 
# 
# Takes a filename as argument, use for loops or 
# find for batch processing! 

INFILE="$1" 
MYPATH="$2" 

#VERBOSE=1 

# Quality / approx bitrate 
#(HQ)     -V0 245  # -V1 225  # -V2 190  # -V3 175 
#(mid Q)  -V4 165  # -V5 130  # -V6 115 
#(low Q)  -V7 100  # -V8 85  # -V9 65 
LAMEARGS="-V5 --vbr-new" 
LAMEARGS="$LAMEARGS --replaygain-fast" 
#LAMEARGS="$LAMEARGS --quiet" 

if [ "${INFILE##*.}" = "ogg" ] 
then 
        echo "<<< $INFILE" 

        # set/create new directory and filename.mp3 
        OUTFILE=$(basename "${INFILE%ogg}mp3") 
        OUTPATH="${MYPATH:-.}/$(dirname "$INFILE")" 

        if [ -e "$OUTPATH/$OUTFILE" ] 
        then 
                # Skip encoding if the file already exists 
                echo "$OUTPATH/$OUTFILE already exists, skipping" 
                exit 
        fi 

        [ ! $DEBUG ] && \ 
                [ ! -d "$OUTPATH" ] && mkdir -p "$OUTPATH" 

        # get ogginfo once 
        INFO="$(ogginfo "$INFILE")" 

        # parse tags 
        ARTIST="$(echo "$INFO" | awk 'BEGIN { IGNORECASE = 1; FS = "="} 
/^[ \t\f\n\r\v]Artist=/ { print $2 }')" 
        [ -n "$ARTIST" ] || ARTIST="Anonymous" 
        ALBUM="$(echo "$INFO" | awk 'BEGIN { IGNORECASE = 1; FS = "="} 
/^[ \t\f\n\r\v]Album=/ { print $2 }')" 
        [ -n "$ALBUM" ] || ALBUM="Untitled" 
        GENRE="$(echo "$INFO" | awk 'BEGIN { IGNORECASE = 1; FS = "="} 
/^[ \t\f\n\r\v]Genre=/ { print $2 }')" 
        [ -n "$GENRE" ] || GENRE="0" 
        TITLE="$(echo "$INFO" | awk 'BEGIN { IGNORECASE = 1; FS = "="} 
/^[ \t\f\n\r\v]Title=/ { print $2 }')" 
        [ -n "$TITLE" ] || TITLE="Untitled" 
        DISC="$(echo "$INFO" | awk 'BEGIN { IGNORECASE = 1; FS = "="} 
/^[ \t\f\n\r\v]Disc=/ { print $2 }')" 
        #[ -n "$DISC" ] || DISC= 
        TRACK="$(echo "$INFO" | awk 'BEGIN { IGNORECASE = 1; FS = "="} 
/^[ \t\f\n\r\v]Tracknumber=/ { print $2 }')" 
        [ -n "$TRACK" ] || TRACK="00" 
        #[ "$#TRACK" = "1" ] && TRACK="0$TRACK" 
        YEAR="$(echo "$INFO" | awk 'BEGIN { IGNORECASE = 1; FS = "="} 
/^[ \t\f\n\r\v]Date=/ { print $2 }')" 
        [ -n "$YEAR" ] || YEAR="00" 


        # on-the-fly re-encoding 
        echo ">>> $OUTPATH/$OUTFILE" 
        if [ $VERBOSE ] 
        then 
                echo "$ARTIST" 
                echo "$ALBUM" 
                echo "$GENRE" 
                echo "$DISC$TRACK" 
        fi 
        oggdec -Q "$INFILE" -o - | lame "$LAMEARGS" --ta "$ARTIST" --tl "$ALBUM" --tg "$GENRE" --tt "$TITLE" --tn "$DISC$TRACK" --ty "$YEAR" - "$OUTPATH/$OUTFILE" 

fi