m4b_mp3_egal.sh hinzugefügt

m4b_mp3_egal.sh

@@ -0,0 +1,70 @@
+#!/bin/bash
+# MIT GUM-Darstellung
+# Abhängigkeiten: sudo apt-get install ffmpeg id3v2
+#                 https://github.com/charmbracelet/gum
+
+track=1
+
+for i in *.m4b; do
+    name="${i%.m4b}"
+
+    ffmpeg -i "$i" 2> tmp.txt
+    chapter_count=$(grep -c "Chapter #" tmp.txt || true)
+
+    if [[ "$chapter_count" -gt 0 ]]; then
+        title=$(basename "$(pwd)")
+        full_file_path="${name}.mp3"
+
+        gum spin --title "Konvertiere: $name ..." -- \
+            ffmpeg -i "$i" \
+                -acodec libmp3lame \
+                -b:a 128k \
+                -map_metadata 0 \
+                -id3v2_version 3 \
+                "$full_file_path"
+
+        echo "Splitte nach Kapiteln: $name"
+        while read -r first _ _ start _ end; do
+            if [[ "${first}" = "Chapter" ]]; then
+                read
+                read _ _ chapter
+                track_padded=$(printf "%02d" "$track")
+                base_name="${title} - ${track_padded} - ${chapter}"
+                chapter_file="${base_name}.mp3"
+                suffix=1
+                while [[ -e "$chapter_file" ]]; do
+                    chapter_file="${base_name}_(${suffix}).mp3"
+                    suffix=$((suffix + 1))
+                done
+                echo "  -> $chapter_file"
+                </dev/null ffmpeg -loglevel error -stats \
+                    -i "$full_file_path" \
+                    -ss "${start%?}" \
+                    -to "$end" \
+                    -codec:a copy \
+                    -metadata title="$chapter" \
+                    -metadata album="$title" \
+                    -metadata track="$track" \
+                    "$chapter_file"
+                track=$((track + 1))
+            fi
+        done < tmp.txt
+
+        rm "$full_file_path"
+    else
+        gum spin --title "Konvertiere: $name ..." -- \
+            ffmpeg -i "$i" \
+                -acodec libmp3lame \
+                -b:a 128k \
+                -map_metadata 0 \
+                -id3v2_version 3 \
+                "${name}.mp3"
+
+        echo "  -> ${name}.mp3"
+        track=$((track + 1))
+    fi
+
+    rm -f tmp.txt
+done
+
+echo "==> Fertig."