metadata scripts

quiethost/metadata_from_fileneme.sh

@@ -0,0 +1,64 @@
+#!/bin/bash
+set -Eeuo pipefail
+escape_kid3() {
+    printf '%s' "$1" | sed "s/'/'\\\\''/g"
+}
+DRY_RUN=false
+
+if [[ "$1" == "--dry-run" ]]; then
+    DRY_RUN=true
+    shift
+fi
+
+if [[ $# -ne 1 ]]; then
+    echo "Usage: $0 [--dry-run] file.txt"
+    exit 1
+fi
+
+list="$1"
+
+if [[ ! -f "$list" ]]; then
+    echo "ERROR: File list not found: $list"
+    exit 1
+fi
+
+while IFS= read -r file; do
+
+    [[ -z "$file" ]] && continue
+
+    if [[ ! -e "$file" ]]; then
+        echo "ERROR: Missing file: $file"
+        exit 1
+    fi
+
+    if [[ -d "$file" ]]; then
+        echo "WARNING: Is a directory, skipping: $file"
+        continue
+    fi
+
+    bookdir="$(dirname "$file")"
+    booktitle="$(basename "$bookdir")"
+    author="$(basename "$(dirname "$bookdir")")"
+
+    echo
+    echo "File:   $file"
+    echo "Artist: $author"
+    echo "Album:  $booktitle"
+
+    if $DRY_RUN; then
+        echo "DRY RUN: no changes made"
+        continue
+    fi
+
+artist=$(escape_kid3 "$author")
+album=$(escape_kid3 "$booktitle")
+
+kid3-cli "$file" \
+    -c "tag 1" \
+    -c "set artist '$artist'" \
+    -c "set album '$album'" \
+    -c "tag 2" \
+    -c "set artist '$artist'" \
+    -c "set album '$album'" \
+    -c save
+done < "$list"

quiethost/metadata_read_by_from_file.sh

@@ -0,0 +1,87 @@
+#!/bin/bash
+
+DRY_RUN=false
+DELETE=false
+
+while [[ $# -gt 0 ]]; do
+    case "$1" in
+        --dry-run)
+            DRY_RUN=true
+            shift
+            ;;
+        --delete)
+            DELETE=true
+            shift
+            ;;
+        *)
+            break
+            ;;
+    esac
+done
+
+if [[ $# -ne 1 ]]; then
+    echo "Usage: $0 [--dry-run] [--delete] file.txt"
+    exit 1
+fi
+
+list="$1"
+
+while IFS= read -r file; do
+
+    [[ -z "$file" ]] && continue
+
+    if [[ ! -e "$file" ]]; then
+        echo "ERROR: Missing file: $file"
+        exit 1
+    fi
+    if [[ -d "$file" ]]; then
+        echo "WARNING: Is a directory, skipping: $file"
+        continue
+    fi
+    # Get comment from ID3v2
+    comment=$(kid3-cli "$file" \
+        -c "tag 2" \
+        -c "get comment" 2>/dev/null)
+
+    [[ -z "$comment" ]] && continue
+
+    echo
+    echo "File: $file"
+    echo "Comment: $comment"
+
+    composer=""
+
+    # Match: read by Name; text
+    if [[ "$comment" =~ ^[Rr]ead[[:space:]]+[Bb]y[[:space:]]+([^;]+)\; ]]; then
+        composer="${BASH_REMATCH[1]}"
+        composer="$(echo "$composer" | sed 's/[[:space:]]*$//')"
+
+        echo "Found narrator: $composer"
+
+        if $DRY_RUN; then
+            echo "DRY RUN: set composer '$composer', delete comment"
+        else
+            kid3-cli "$file" \
+                -c "tag 2" \
+                -c "set composer '$composer'" \
+                -c "set comment ''" \
+                -c save
+        fi
+
+    elif [[ ${#comment} -lt 40 ]]; then
+
+        echo "Short comment (${#comment} chars): $comment"
+
+        if $DELETE; then
+            if $DRY_RUN; then
+                echo "DRY RUN: delete comment"
+            else
+                kid3-cli "$file" \
+                    -c "tag 2" \
+                    -c "set comment ''" \
+                    -c save
+            fi
+        fi
+    fi
+
+done < "$list"

quiethost/metadata_search_display.sh

@@ -0,0 +1,58 @@
+#!/usr/bin/env bash
+
+root="${1:-.}"
+mode="${2:-}"
+THRESHOLD=40
+find "$root" \( -iname '*.mp3' -o -iname '*.m4a' -o -iname '*.m4b' \) -print0 |
+while IFS= read -r -d '' f; do
+
+    comment=$(ffprobe -v error \
+        -show_entries format_tags=comment \
+        -of default=nw=1:nk=1 \
+        -- "$f")
+
+    description=$(ffprobe -v error \
+        -show_entries format_tags=description \
+        -of default=nw=1:nk=1 \
+        -- "$f")
+
+    # trim comment
+    comment="${comment#"${comment%%[![:space:]]*}"}"
+    comment="${comment%"${comment##*[![:space:]]}"}"
+
+    # ---- DELETE MODE ----
+    if [[ "$mode" == "del" && -n "$comment" && ${#comment} -lt $THRESHOLD ]]; then
+        tmp=$(mktemp -p "$(dirname -- "$f")" ".fftmp.XXXXXX.${f##*.}") || continue
+
+        echo "Removing short comment: $f"
+        echo "  comment: $comment"
+
+        ffmpeg -nostdin -v error -y \
+            -i "$f" \
+            -map 0 \
+            -map_metadata 0 \
+            -c copy \
+            -metadata comment= \
+            "$tmp" &&
+        mv -f -- "$tmp" "$f" || {
+            echo "FAILED: $f" >&2
+            rm -f -- "$tmp"
+        }
+
+        continue
+    fi
+
+    # ---- SCAN MODE ----
+    # only show short non-empty tags (<20 chars)
+    for tag in comment description; do
+        value="${!tag}"
+
+        value="${value#"${value%%[![:space:]]*}"}"
+        value="${value%"${value##*[![:space:]]}"}"
+
+        if [[ -n "$value" && ${#value} -lt $THRESHOLD ]]; then
+            printf "%s\n  %s: %s\n\n" "$f" "$tag" "$value"
+        fi
+    done
+
+done

quiethost/metadata_search_replace.sh

@@ -0,0 +1,47 @@
+#!/usr/bin/env bash
+
+find . \( -iname '*.mp3' -o -iname '*.m4a' -o -iname '*.m4b' \) -print0 |
+while IFS= read -r -d '' f; do
+
+    comment=$(ffprobe -v error \
+        -show_entries format_tags=comment \
+        -of default=nw=1:nk=1 \
+        -- "$f")
+
+    [[ $comment =~ ^[Rr]ead[[:space:]]+[Bb]y[[:space:]]+(.+) ]] || continue
+
+    composer="${BASH_REMATCH[1]}"
+    echo "Updating: $f"
+    echo "  Composer: $composer"
+
+    dir=$(dirname -- "$f")
+    base=$(basename -- "$f")
+    ext="${base##*.}"
+
+    case "${ext,,}" in
+        mp3) format=mp3 ;;
+        m4a|m4b) format=ipod ;;
+        *) continue ;;
+    esac
+
+    tmp=$(mktemp -p "$dir" ".${base}.XXXXXX") || {
+        echo "Couldn't create temporary file in $dir" >&2
+        continue
+    }
+
+    if ffmpeg -nostdin -v error -y \
+        -i "$f" \
+        -map 0 \
+        -map_metadata 0 \
+        -c copy \
+        -metadata composer="$composer" \
+        -metadata comment= \
+        -f "$format" \
+        "$tmp"
+    then
+        mv -f -- "$tmp" "$f"
+    else
+        echo "FAILED: $f" >&2
+        rm -f -- "$tmp"
+    fi
+done