reemux.sh v1.0

reemux.sh

#!/bin/sh
#======================================================================
# reemux.sh by sqbs
#======================================================================
#
#   Special thanks to Bill, lts
#
#======================================================================
# WHAT IS IT?
#======================================================================
#
#   A POSIX script for removing unwanted tracks from MKVs
#
#   Requires:
#
#     - mkvtoolnix-cli
#
#======================================================================
# WHAT DOES IT DO?
#======================================================================
#
#   Creates a remuxed MKV container and removes specified tracks
#
#======================================================================
# HOW TO USE / EXAMPLES
#======================================================================
#
#   When prompted to select audio/sub tracks select the number
#   next to mkvextract: (track ID for mkvmerge & mkvextract: 1)
#                       (track ID for mkvmerge & mkvextract: 2)
#                       (track ID for mkvmerge & mkvextract: 3)
#
#   reemux.sh file1.mkv file*.mkv file_S*E*.mkv
#
#       Ask for audio and sub tracks before each file
#
#   reemux.sh -f file1.mkv file*.mkv file_S*E*.mkv
#       
#       Same audio and sub tracks selected for all
#
#   reemux.sh -c file1.mkv file*.mkv file_S*E*.mkv
#       
#       Only trigger on MKVs with labelled commentary tracks
#
#   reemux.sh -C file1.mkv file*.mkv file_S*E*.mkv
#       
#       Auto target and filter labelled commentary tracks
#
#======================================================================
# FUNCTIONS
#======================================================================
version="1.0"
info() {
	echo ""
	printf "reemux.sh v%s " "$version"
	printf "\n\n%s\n\n" "https://gist.github.com/sqbs/f8898fbf54b8ca11313a03fee1e45891"
}
help() {
	info
	echo "A POSIX script for removing unwanted tracks from MKVs"
	echo ""
	echo "Syntax: burnsub.sh [-c|C|f|h|v]"
	echo "Options:"
	echo ""
	echo "	c     Target videos with detactable commentary tracks"
	echo "	C     Auto target and remove commentary tracks"
	echo "	f     Same audio/subtitle selection for all files"
	echo "	h     Display this screen"
	echo "	v     Display version number"
	echo ""
}
get_user_input() {
	file=$*
	case "${file_ext}" in
		"mkv") 
		 	printf "\nFile: \"%s\"\n\n" "$file"
			;;
		*) 
			printf "\nSource file is not a .mkv\n"
			exit 1
			;;
	esac
	printf "%s\n" "$mkvinfo"
	printf "\nSpecify tracks to remove separated by \",\": "
	read -r selected_tracks
	case $selected_tracks in
		*[0-9,]*) ;;
		"") ;;
		*) 
			printf "\n\"%s\" is/are not valid tracks\n" "$selected_tracks"
			exit 1
			;;
	esac
}
has_commentary() {
	export IFS="&"
	mkvinfo=$(mkvinfo "$var" | sed -nr '/[\w\W]*(Track number|Track type|Language|Display|Name)[\w\W]*/p')
	track=-2
	for word in $mkvinfo; do
		track=$((track+1))
		if echo "$word"  | grep -q "Track type: audio" ; then
			if echo "$word" | grep -iq "commentary"; then
				commentary_track=$((track))
			else
				commentary_track=0
			fi
		fi
	done
}
print_execution_time() {
	time_end=$(date +%s)
	runtime=$((time_end - time_start))
	min=0
	hour=0
	day=0
	if [ $runtime -gt 59 ]; then
		sec=$((runtime % 60))
		runtime=$((runtime / 60))
		if [ $runtime -gt 59 ]; then
			min=$((runtime % 60))
			runtime=$((runtime / 60))
			if [ $runtime -gt 23 ]; then
				hour=$((runtime % 24))
				day=$((runtime / 24))
			else
				hour=$runtime
			fi
		else
			min=$runtime
		fi
	else
		sec=$runtime
	fi
	[ $day -gt 0 ] && output="$output ${day}d"
	[ $hour -gt 0 ] && output="$output ${hour}h"
	[ $min -gt 0 ] && output="$output ${min}m"
	[ $sec -gt 0 ] && output="$output ${sec}s"
	[ "$output" = "" ] && output="0s"
	printf "\nExecution time: %s\n\n" "$output"
}
end() {
	echo "Done"
	print_execution_time
	exit 0
}
#===========================================================
# INIT
#===========================================================
case "$1" in 
	"-"*["h"]*) help; exit 0;;
	"-"*["v"]*) info; exit 0;;
	*);;
esac
time_start=$(date +%s)
[ -x "$(command -v mkvmerge)" ] || pass=false
[ "$pass" != false ] || { printf "\nPlease install mkvtoolnix-cli and run me again\n\n"; exit 1; }
#===========================================================
# MAIN
#===========================================================
case "$1" in
	"-"*) 
		if [ -z "$2" ]; then
			file=0
		else
			file=1
		fi
		;;
	*)  
		if [ -z "$1" ]; then
			file=0
		else
			file=1
		fi
		;;
esac
if [ $file -eq 0 ]; then
	printf "\nNo .mkv file specified\n\n"
	exit 1
fi
printf "
⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⣿⣿⠟⠋⠉⡁⡉⠙⠻⠿⣿⣿⠿⠛⠛⠛⠛⠿⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⣿⡟⢃⢰⢨⡪⡪⠪⠪⠪⡠⡁⢄⢢⢪⢌⢎⢦⢡⢀⠙⣿⣿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⣿⣿⡏⠠⣊⢎⢌⢆⡇⣏⢎⢇⢧⡑⠌⢎⢊⣈⡁⣁⢡⢡⢀⠙⠿⣿⣿⣿⣿⣿⣿
⣿⣿⣿⣿⠟⠛⠡⡱⡱⡱⡕⡵⠱⡑⠥⢑⢐⢘⢄⠳⡱⡱⡱⡱⠕⡕⠱⢀⠄⠘⠻⢿⣿⣿⣿
⣿⣿⠋⢀⠔⡅⡇⡏⡮⣚⡘⡌⢈⣤⣴⣶⣶⣶⣤⡔⠈⠪⠡⠑⠁⣂⣥⣴⣶⠷⢶⣮⢿⣿⣿
⣿⡏⢀⢆⢏⢎⢮⢺⢸⢢⢣⢘⠿⢿⢿⣿⣿⣀⣈⠿⠗⠲⠶⠿⠿⠿⠿⠿⠿⠶⠚⢻⣿⣿⣿
⡟⠃⡆⠥⢸⢸⢪⡪⣪⢣⡣⡣⡄⡄⡄⡈⠨⠁⣂⢂⢅⢔⣐⠢⢢⢐⠄⠔⠄⣠⣴⣿⣿⣿⣿
⡇⢰⢸⢸⡸⡪⣪⠪⡊⡌⡪⡘⡌⢅⢃⢝⠜⠜⠔⡜⡜⡕⡎⡎⠎⠮⡚⡈⡄⢘⣿⣿⣿⣿⣿
⢀⢇⢧⢣⡣⡳⢡⢑⠑⠈⠄⠄⠄⠁⠈⠂⠑⠩⠊⠌⠆⠃⣊⠘⠘⠈⢈⣐⣠⣾⣿⣿⣿⣿⣿
⠐⡕⡵⠱⢱⠑⡌⠄⠄⠄⠠⠄⠄⡀⠄⠄⠄⠄⠄⠄⣴⣾⣿⣿⣶⣿⠿⠛⠉⠉⠈⠙⣿⣿⣿
⠄⢱⢱⢱⡁⡌⡂⠄⠄⠁⠄⠄⠄⠄⠄⠈⠄⠄⠄⠄⠄⠈⠉⠉⠄⠄⣠⣤⣴⣶⣦⣤⣿⣿⣿
⡂⠐⢕⢕⠕⡨⡀⠄⠄⠁⠄⠐⠈⠄⠄⠄⠄⠄⠄⢸⣷⣶⣶⣶⣶⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿
⠧⢀⠣⢳⢱⢐⢌⢂⢂⠢⡂⠪⠨⠂⠕⡐⠄⢄⢀⢘⢛⠛⡛⠛⠛⠛⠻⣿⣿⣿⣿⣿⣿⣿⣿
⢌⢦⢳⢱⢬⢸⡐⡔⡢⡪⡪⡱⡙⠄⣃⢃⠬⠤⡄⠥⡠⠡⣀⣀⣦⣤⣾⣿⣿⠟⠻⠟⢛⣿⣿
⢕⢕⢵⢱⢕⢵⢱⡹⠜⢎⢪⡰⡍⡗⡬⡸⢸⢱⢕⡲⡸⡀⡉⠻⢿⢿⠿⠋⢁⢐⠔⠄⠂⢿⣿
⢕⢕⢇⢗⢕⢵⢱⡸⡸⡱⣱⢱⠑⡅⡦⡪⡪⡎⡮⡪⡺⡸⣰⢰⠁⢔⡰⡱⣑⠑⣨⣴⣶⣿⣿

         R E E M U X v%s
" "$version"
if case "$1" in "-"*["c""C"]*) true;; *) false;; esac; then
	printf "\nSearching files for commentary tracks...\n"
fi
for var in "$@"
do
	if case "$var" in "-"*["f""c""C"]*) true;; *) false;; esac; then
		continue
	fi
	filename_ext=$(basename -- "$var")
	file_ext="${filename_ext##*.}"
	filename=${filename_ext%".$file_ext"}
	filename_save="${filename}_REEMUX.${file_ext}"
	folder_path=$(realpath "$var")
	folder_path=${folder_path%"/$filename_ext"}

	has_commentary "$var"
	if case "$1" in "-"*["c""C"]*) true;; *) false;; esac; then
		if [ "$commentary_track" -eq 0 ]; then
			printf "\n\"%s\" no commentary tracks detected\n\nSkipping...\n\n" "$filename_ext"
			continue
		fi
	fi

	case "$1" in
		"-"*["C"]*) ;;
		"-"*"f"*) 
			if [ ! "$received_user_input" ]; then
				get_user_input "$var"
				received_user_input=true;
			fi
			;;
		*) get_user_input "$var" ;;
	esac
	printf "\nPreparing \"%s\"...\n" "$filename_ext"
	export IFS="&"
	keep_video=''
	keep_audio=''
	keep_subtitles=''
	track=-2
	for word in $mkvinfo; do
		track=$((track+1))
		if case "$1" in "-"*["C"]*) false;; *) true;; esac; then
			if [ "${selected_tracks#*$track}" != "$selected_tracks" ]; then
				continue
			fi
		fi
		if echo "$word" | grep -q "Track type: video"; then
			keep_video="${keep_video},${track}"
		fi
		if echo "$word"  | grep -q "Track type: audio"; then
			if case "$1" in "-"*["C"]*) true;; *) false;; esac; then
				if echo "$word" | grep -iq "commentary"; then
					continue
				fi
			fi
			keep_audio="${keep_audio},${track}"
		fi
		if echo "$word" | grep -q "Track type: subtitles" ; then
			keep_subtitles="${keep_subtitles},${track}"
		fi
	done
	keep_video=$(echo $keep_video | cut -c 2-)
	keep_audio=$(echo $keep_audio | cut -c 2-)
	keep_subtitles=$(echo $keep_subtitles | cut -c 2-)
	if [ "$keep_video" != "" ]; then
		mkvmerge_video="--video-tracks $keep_video"
	else
		mkvmerge_video="--no-video"
	fi
	if [ "$keep_audio" != "" ]; then
		mkvmerge_audio="--audio-tracks $keep_audio"
	else
		mkvmerge_audio="--no-audio"
	fi
	if [ "$keep_subtitles" != "" ]; then
		mkvmerge_subtitles="--subtitle-tracks $keep_subtitles"
	else
		mkvmerge_subtitles="--no-subtitles"
	fi
	eval "mkvmerge -o \"${folder_path}/${filename_save}\" ${mkvmerge_video} ${mkvmerge_audio} ${mkvmerge_subtitles} \"${folder_path}/${filename_ext}\""
done
end "$1"