scripts/audible-strip-drm

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#!/bin/bash
set -euo pipefail
IFS=$'\n\t'
# If you don't have AUDIBLE_ACTIVATION_BYTES, run
# podman run -v $(pwd):/data ryanfb/inaudible@sha256:b66738d235be1007797e3a0a0ead115fa227e81e2ab5b7befb97d43f7712fac5
# Or if that isn't possible, see this project: https://github.com/inAudible-NG/tables
# Getting AUDIBLE_ACTIVATION_BYTES for your account is a one-time thing, it remains same forever.
# So once you have it, you can save it and then re-use it for instant future decryption using ffmpeg.
# This gets it from my password manager
export AUDIBLE_ACTIVATION_BYTES=$(pass show Keys/AUDIBLE_ACTIVATION_BYTES)
for i in *.aax; do
m4a_file="${i%%.*}.m4a"
if [ ! -e "$m4a_file" ]; then
ffmpeg -loglevel panic -y -activation_bytes ${AUDIBLE_ACTIVATION_BYTES} -i "$i" -c:a copy -movflags +faststart -vn "$m4a_file"
# See https://github.com/captn3m0/Scripts/blob/master/fix-audible-m4a for this script
# Dependencies are: bento4 (https://aur.archlinux.org/packages/bento4/)
# bash, and sed
fix-audible-m4a "$m4a_file"
fi
done