stream-split.sh

#!/bin/sh
# Splits an AV file with multiple chapters into separate files.
# Copyright (c) 2017, Alexandre Hamelin <alexandre.hamelin gmail.com>


[[ $# -gt 0 ]] || exit 1
file=$1

[[ -f "$file" ]] || exit 2
ext=${file##*.}

sub=" *Chapter #([0-9]+.[0-9]+): start ([0-9]+\.[0-9]+), end ([0-9]+\.[0-9]+)"
repl="-i \"$file\" -c:v copy -c:a copy -ss \2 -to \3 \"${file%.*}-\1.$ext\""

ffmpeg -i "$file" 2>&1 |
    sed -r "/Chapter/ {s|$sub|$repl|;p}; d" | head -n 4 |
    xargs -n 11 ffmpeg