Bash script to generate MP3 file and chapters text file for a podcast episode

podcast.sh

# More information: https://blog.corbin.io/post/748500250878263296/figuring-out-podcast-chapter-markers
# This requires FFMPEG/FFPROBE and JQ to be installed
# On a Mac with Homebrew installed: brew install jq ffmpeg

echo "Audio file: "
read audio

echo "Video file: "
read video

echo "Encoding audio file..."
ffmpeg -i "$audio" -map_chapters 0 -ac 1 -b:a 128k -f mp3 ~/Desktop/output.mp3

echo "Writing chapters file..."
json_data=$(ffprobe -i "$audio" -show_chapters -sexagesimal -of json -loglevel error)
echo "$json_data" | jq -r '.chapters[] | "\(.start_time | split(".")[0]) \(.tags.title)"' > chapters.txt

echo "Files saved on Desktop!"
open ~/Desktop