[PLUG] transcoding - solution?

[Geoff Rivell <grivell@comcast.net>]

I'm hitting the tail end of this conversation, but if I'm reading this 
right...

You want to recode flac's to mp3's and ogg's??

If so this may be of use:

########################################################################
# transcode
#
# A "front-end" script for transcoding from FLAC to either 
# FLAC, Ogg Vorbis, or MP3
#
########################################################################

#!/bin/bash

########################################################################
# User-Defined Variables:

# Where do you want your transcoded files to go?

TRANSCODED_DIR=/Music/ogg

# FLAC command-line options

FLAC_OPS="--best"

# Ogg Vorbis (oggenc) command-line options

VORBIS_OPS="-q 6"

# MP3 (lame) command-line options (quality only; ID3 tag options are below)

LAME_OPS="--alt-preset standard"

########################################################################
# Non-User-Defined Variables:

# This part sorts out the copying of subdirectories in the tree
TOP_WORKING_DIR=`pwd`
TOP_WORKING_DIR_LENGTH=`expr length "$TOP_WORKING_DIR"`
let "PATH_CUT_LENGTH=$TOP_WORKING_DIR_LENGTH+2"

TODAY=`date -I`

# This variable is set at the command line - flac, vorbis, mp3, or test
OUTPUT_TYPE=$1

########################################################################
# The transcoding functions

# Function for transcoding FLAC to FLAC (useful for increasing compression)

flac2flac ()
{
 EAC_LOG=`basename "$1" .log`
 if [ "$1" == "$EAC_LOG" ]
 then
  echo "Transcoding "$1" to $OUTPUT_TYPE"
  CURRENT_WORKING_DIR=`pwd`
  MAGIC_PATH=`echo "$CURRENT_WORKING_DIR" | cut -b "$PATH_CUT_LENGTH"-`
  TOTAL_PATH="$TRANSCODED_DIR/$MAGIC_PATH"
  mkdir -p "$TOTAL_PATH"
  flac -d -c "$1" | flac "$FLAC_OPS" - -o "$TOTAL_PATH/$1" && metaflac --no-utf8-convert --export-vc-to=/tmp/tag.tmp "$1" && metaflac --import-vc-from=/tmp/tag.tmp "$TOTAL_PATH/$1"
 else
  cp "$1" "$TOTAL_PATH/.."
  echo "" >> "$TOTAL_PATH/../$1"
  echo "**********"  >> "$TOTAL_PATH/../$1"
  echo "$TODAY - Transcoded album to flac $FLAC_OPS" >> "$TOTAL_PATH/../$1"
 fi
 return 0
}

# Function for transcoding FLAC to Ogg Vorbis using oggenc

flac2vorbis ()
{
 EAC_LOG=`basename "$1" .log`
 if [ "$1" == "$EAC_LOG" ]
 then
  echo "Transcoding "$1" to $OUTPUT_TYPE"
  CURRENT_WORKING_DIR=`pwd`
  MAGIC_PATH=`echo "$CURRENT_WORKING_DIR" | cut -b "$PATH_CUT_LENGTH"-`
  TOTAL_PATH="$TRANSCODED_DIR/$MAGIC_PATH"
  mkdir -p "$TOTAL_PATH"
  newname="`basename "$1" .flac`.ogg"
#  flac -d -c "$1" | oggenc "$VORBIS_OPS" - -o "$TOTAL_PATH/$newname" && metaflac --no-utf8-convert --export-vc-to=/tmp/tag.tmp "$1" && vorbiscomment --raw -w "$TOTAL_PATH/$newname" -c /tmp/tag.tmp && rm /tmp/tag.tmp
  if `test -f "$TOTAL_PATH/$newname"` ;then return 0; else \
  oggenc "$VORBIS_OPS" "$1" -o "$TOTAL_PATH/$newname" ; fi
 else
  cp "$1" "$TOTAL_PATH/.."
  echo "" >> "$TOTAL_PATH/../$1"
  echo "**********" >> "$TOTAL_PATH/../$1"
  echo "$TODAY - Transcoded album to Ogg Vorbis $VORBIS_OPS" >> "$TOTAL_PATH/../$1"
 fi
 return 0
}

# Function for transcoding FLAC to MP3 using the LAME encoder

flac2mp3 ()
{
 EAC_LOG=`basename "$1" .log`
 if [ "$1" == "$EAC_LOG" ]
 then
  echo "Transcoding "$1" to $OUTPUT_TYPE"
  CURRENT_WORKING_DIR=`pwd`
  MAGIC_PATH=`echo "$CURRENT_WORKING_DIR" | cut -b "$PATH_CUT_LENGTH"-`
  TOTAL_PATH="$TRANSCODED_DIR/$MAGIC_PATH"
  mkdir -p "$TOTAL_PATH"
  newname="`basename "$1" .flac`.mp3"
  TITLE=`metaflac --show-vc-field=TITLE "$1" | cut -b 7-`
  ARTIST=`metaflac --show-vc-field=ARTIST "$1" | cut -b 8-`
  ALBUM=`metaflac --show-vc-field=ALBUM "$1" | cut -b 7-`
  TRACK=`metaflac --show-vc-field=TRACKNUMBER "$1" | cut -b 13-`
  YEAR=`metaflac --show-vc-field=DATE "$1" | cut -b 6-9`
  GENRE=`metaflac --show-vc-field=GENRE "$1" | cut -b 7-`
  COMMENT=`metaflac --show-vc-field=COMMENT "$1" | cut -b 8`
  flac -d -c "$1" | lame-ha $LAME_OPS --add-id3v2 --tt "$TITLE" --ta "$ARTIST" --tl "$ALBUM" --tn "$TRACK" --ty "$YEAR" --tg "$GENRE" --tc "$COMMENT" - "$TOTAL_PATH/$newname"
 else
  cp "$1" "$TOTAL_PATH/.."
  echo "" >> "$TOTAL_PATH/../$1"
  echo "**********" >> "$TOTAL_PATH/../$1"
  echo "$TODAY - Transcoded album to LAME mp3 $LAME_OPS" >> "$TOTAL_PATH/../$1"
 fi
 return 0
}

flactest ()
{
 EAC_LOG=`basename "$1" .log`
 if [ "$1" == "$EAC_LOG" ]
 then
   echo "Testing $1 and silently writing log"
   flac -t -s "$1" 2>> "$TRANSCODED_DIR/flactest.log"
 fi
 return 0
}

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

# Function for finding files recursively

recursive ()
{
 for i in *
 do
  if [ -d "$i" ]
  then
   cd "$i"
   recursive
   cd ..
  else

   if [ "flac" == "$OUTPUT_TYPE" ]
   then
    flac2flac "$i"
   elif [ "vorbis" == "$OUTPUT_TYPE" ]
   then
    flac2vorbis "$i"
   elif [ "mp3" == "$OUTPUT_TYPE" ]
   then
    flac2mp3 "$i"
   elif [ "test" == "$OUTPUT_TYPE" ]
   then
    flactest "$i"
   else
    echo "Output type not recognized - please specify \"flac\", \"vorbis\", \"mp3\", or \"test\""
   fi

  fi
 done
}

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

# The main body of the script...all it does is call the recursive function
recursive

########################################################################
# End of script
########################################################################