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Feature #396 » genid3db.sh

genid3db.sh - Generate a set of JSON files from ID3 data, including cover art and filename. - Hammel, 31 Jan 2019 16:47

 
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#!/bin/bash
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# Generate a database of JSON data from ID3 tags extracted from MP3 files.
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# This includes extracting the cover art and associating it with the JSON data.
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# --------------------------------------------------------------------------------
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lib=".musiclib"
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coverart="${lib}/coverart"
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mkdir -p "${coverart}"
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find . -iname "*.mp3" | while read file; do
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    echo "Processing ${file}"
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    # Get a UUID to uniquely identify the song.
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    uuid=$(uuidgen)
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    # Extract Cover Art, if any.
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    ffmpeg -i "${file}" "${coverart}/${uuid}.png" 2>/dev/null
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    # Extract ID3 data
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    ffprobe -show_format -show_streams -print_format json "${file}" 2>/dev/null | jq .format.tags > ${lib}/${uuid}.json
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    # Add the filename and covert art file to the extracted ID3 data.
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    cat ${lib}/${uuid}.json | jq --arg file "${file}" '. + {file: $file}' > ${lib}/${uuid}.2
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    mv ${lib}/${uuid}.2 ${lib}/${uuid}.json
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    cat ${lib}/${uuid}.json | jq --arg coverart "${uuid}.png" '. + {covert: $coverart}' > ${lib}/${uuid}.2
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    mv ${lib}/${uuid}.2 ${lib}/${uuid}.json
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done 
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# ls -l ${coverart}
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# sleep 5
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# cat ${lib}/*.json
(1-1/2)