79 lines
1.8 KiB
Plaintext
79 lines
1.8 KiB
Plaintext
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#!/bin/bash
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#credit/source:
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#https://wiki.archlinux.org/index.php/Convert_Any_To_Mp3
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#deps: MPlayer, mutagen and lame
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DEFAULT_OUTPUT_DIR=/tmp/mp3ify
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QUALITY=2
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VBR_QUALITY=4
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MIN_BITRATE=64
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MAX_BITRATE=256
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SAMPLE_FREQ=44.1
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function any_to_mp3 {
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PIPE=`mktemp -u -t mp3ify.pipe.XXXXXX`
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mkfifo "$PIPE"
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mplayer -ao pcm -ao pcm:file="$PIPE" "$INPUT_FILE" -noconsolecontrols > /dev/null 2>&1 &
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lame -m j -q $QUALITY -v -V $VBR_QUALITY -b $MIN_BITRATE \
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-B $MAX_BITRATE -s $SAMPLE_FREQ "$PIPE" "$OUTPUT_FILE" > /dev/null 2>&1
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rm "$PIPE"
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python2 -c "
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import mutagen
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input = mutagen.File(\"$INPUT_FILE\", easy = True)
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output = mutagen.File(\"$OUTPUT_FILE\", easy = True)
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for tag in [ 'artist', 'album', 'tracknumber', 'date', 'genre', 'title', 'comment' ]:
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value = input.get(tag)
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if value: output[tag] = value[0]
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output.save(v1=2)"
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}
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function usage {
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echo "mp3ify <input_dir> [<output_dir>]
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Transforms structure <input_dir>/X/Y/.../Z into structure <output_dir>/X/Y/.../Z
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according to the following rules:
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flac, ogg, m4a, ape, aac, mpc files will be encoded to mp3 preserving tags.
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Everything else will be copied without modification.
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Requires: mplayer, lame, mutagen.
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"
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exit 1
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}
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INPUT_DIR="$1"
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[ -d "$INPUT_DIR" ] || usage
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OUTPUT_DIR="${2:-$DEFAULT_OUTPUT_DIR}"
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find "$INPUT_DIR" -name '*.*' | while read INPUT_FILE
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do
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INPUT_EXTENSION="${INPUT_FILE##*.}"
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OUTPUT_FILE="$OUTPUT_DIR/${INPUT_FILE#$INPUT_DIR}"
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mkdir -p "`dirname "$OUTPUT_FILE"`"
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case $INPUT_EXTENSION in
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flac|m4a|ogg|ape|aac|mpc)
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OUTPUT_FILE="${OUTPUT_FILE%.$INPUT_EXTENSION}.mp3"
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echo -n "Converting ${INPUT_FILE##*/}... "
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any_to_mp3
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;;
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*)
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echo -n "Copying ${INPUT_FILE##*/}... "
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cp "$INPUT_FILE" "$OUTPUT_FILE"
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;;
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esac
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echo "done."
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done
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