initial commit

aax-to-chapter

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+set -e
+
+input="$1"
+EXT2="m4a"
+
+if [ -z "$AAX_ACTIVATION_BYTES" ]; then
+  echo "set AAX_ACTIVATION_BYTES env var"
+  exit 1
+fi
+
+json=$(ffprobe -activation_bytes "$AAX_ACTIVATION_BYTES" -i "$input" -loglevel error -print_format json -show_format -show_chapters)
+title=$(echo $json | jq -r ".format.tags.title")
+count=$(echo $json | jq ".chapters | length")
+target=$(echo $json | jq -r ".format.tags | .date + \" \" + .artist + \" - \" + .title")
+mkdir "$target"
+
+for i in $(seq -w 1 $count); do
+  j=$((10#$i))
+  n=$(($j - 1))
+  start=$(echo $json | jq -r ".chapters[$n].start_time")
+  end=$(echo $json | jq -r ".chapters[$n].end_time")
+  name=$(echo $json | jq -r ".chapters[$n].tags.title")
+  ffmpeg -activation_bytes "$AAX_ACTIVATION_BYTES" -i $input -ss $start -to $end -metadata title="$title $name" -vn -c:a copy "$target/$i $name.$EXT2"
+done