48 lines
1.1 KiB
Bash
48 lines
1.1 KiB
Bash
#!/usr/bin/env bash
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find . \( -iname '*.mp3' -o -iname '*.m4a' -o -iname '*.m4b' \) -print0 |
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while IFS= read -r -d '' f; do
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comment=$(ffprobe -v error \
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-show_entries format_tags=comment \
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-of default=nw=1:nk=1 \
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-- "$f")
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[[ $comment =~ ^[Rr]ead[[:space:]]+[Bb]y[[:space:]]+(.+) ]] || continue
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composer="${BASH_REMATCH[1]}"
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echo "Updating: $f"
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echo " Composer: $composer"
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dir=$(dirname -- "$f")
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base=$(basename -- "$f")
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ext="${base##*.}"
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case "${ext,,}" in
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mp3) format=mp3 ;;
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m4a|m4b) format=ipod ;;
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*) continue ;;
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esac
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tmp=$(mktemp -p "$dir" ".${base}.XXXXXX") || {
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echo "Couldn't create temporary file in $dir" >&2
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continue
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}
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if ffmpeg -nostdin -v error -y \
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-i "$f" \
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-map 0 \
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-map_metadata 0 \
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-c copy \
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-metadata composer="$composer" \
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-metadata comment= \
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-f "$format" \
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"$tmp"
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then
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mv -f -- "$tmp" "$f"
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else
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echo "FAILED: $f" >&2
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rm -f -- "$tmp"
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fi
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done
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