muxall.sh

#!/bin/bash
# Author: Michael Koch (m<DOT>koch<AT>emkay443<DOT>de)
# License: GNU GPL v3

# ./tool in out lang subt

function usage {
    echo "Usage: $0 [input dir] [output dir] [language] [subtitles(true/false)]"
}

[ -z "$1" ] && usage && exit 1
[ -z "$2" ] && usage && exit 2
[ -z "$4" ] && usage && exit 3
[ -z "$3" ] && usage && exit 4

dir_in="$1"
dir_out="$2"
lang="$3"
subt="$4"

for file in "$dir_in"/*; do
    nf_basename="$(basename "$file")"
    nf_basename="${nf_basename%.*}"
    nf_without_episode_number="$(cut -d '-' -f 2- <<< "$nf_basename" | cut -d ' ' -f 2-)"
    nf_filepath="$dir_out/$nf_basename.mkv"
    if $subt; then
        mkvmerge -o "$nf_filepath" --title "$nf_without_episode_number" --default-language "$lang" --language "0:$lang" --language "1:$lang" "$file"
    else
        mkvmerge -o "$nf_filepath" --title "$nf_without_episode_number" --default-language "$lang" --language "0:$lang" --language "1:$lang" --no-subtitles "$file"
    fi
done

exit 0