user/mw_get_audiobook_chapters.sh

   1 #!/bin/bash
   2 # Print mediawiki code chapter headings and timecodes from audiobook file
   3 # Usage: mw_get_audiobook_chapters.sh [file] ([int offset])
   4 # Input: arg1: path to audiobook
   5 # Example: mw_get_audiobook_chapters.sh input.m4b
   6 # Version: 0.1.0
   7
   8
   9 fin="$1";
  10 n=0
  11 while read -r line; do
  12     if [[ $((n % 2)) -eq 0 ]]; then
  13         chap="$(sed -e 's/^0*//' <<< "$line")"; # remove leading zero
  14         printf "====%s====\n" "$chap"; # output wikicode header
  15     elif [[ $((n % 2)) -eq 1 ]]; then
  16         printf "%s\n\n" "$line"; # output timecode
  17     fi;
  18     #declare -p n line; # debug
  19     ((n++));
  20 done < <(ffprobe -i "$fin" -print_format json -show_chapters -sexagesimal | \
  21              jq \
  22                  -r '.chapters[] | (.tags.title) + "\n" + (.start_time | gsub("\\.\\d+$"; "") )'
  23         );