mkv-substrip.sh - Remove all subtitle tracks (strip) from all MKV files in a specified folder or file

readme.md

mkv-substrip

Remove all subtitle tracks (strip) from all MKV files in a specified folder or file, then put the new mkv file(s) in a previously-created sub-folder named "output".

Param

• "folder" -> (with a least one mkv file) or "file.mkv" (relative paths also works)
• "-f" -> force to remuxing every mkv file, even if don't have any subtitle (disabled for default)

Usage

• Folder (mkv files): mkv-substrip "/home/user/folder-to-mkv-files"
• Single file: mkv-substrip "/home/user/file-with-subtitle.mkv"
• For a (whole) local dir: mkv-substrip .
• Force to remux: mkv-substrip "/home/user/file-with-subtitle.mkv" -f

Install

sudo wget -qO /usr/local/bin/mkv-substrip https://gist.githubusercontent.com/maxwelleite/9a8f34c8f16e1698b12693643e195a82/raw/mkv-substrip.sh
sudo chmod +x /usr/local/bin/mkv-substrip

mkv-substrip.sh

#!/bin/bash
# file-name: mkv-substrip.sh
# Website: http://needforbits.tumblr.com/
#          https://gist.github.com/maxwelleite
#          https://github.com/maxwelleite
# Author: Maxwel Leite
# License: GPLv3
# Description: Remove all subtitle tracks (strip) from all MKV files in a specified folder or file,
#              then put the new mkv file(s) in a previously-created sub-folder named "output".
# Param: "folder" (with a least one mkv file) or "file.mkv" (*relative paths also works*)
#        "-f" -> force to remuxing every mkv file, even if don't have any subtitle (disabled for default)
# Usage: 
#         Folder (mkv files): mkv-substrip.sh "/home/user/folder-to-mkv-files"
#         Single file: mkv-substrip.sh "/home/user/file-with-subtitle.mkv"
#         For a (whole) local dir: mkv-substrip.sh .
#         Force to remux:  mkv-substrip.sh "/home/user/file-with-subtitle.mkv" -f
# TODO: Apply/check a header Compression fix (if needed)
# Last update: 2019-07-13

clear
if ! which mkvmerge >/dev/null; then
    echo ""
    echo "Error: mkvmerge is required (from mkvtoolnix)"
    echo "Run the following command to install it:"
    echo "sudo apt-get install mkvtoolnix"
    echo "Or, install the latest version from:"
    echo "https://mkvtoolnix.download/downloads.html"
    exit
fi

_checkSub() {
    if [ "$checksub" == "1" ]; then
        # check if mkv file have any subtitle
        if [ -z "`mkvmerge -i "$mkvfile" | grep subtitles`" ]; then
            echo -e "mkv-substrip: Skipped, no subtitle found!\n" >> "$outputlog"
            echo -e "Skipped, no subtitle found!"
            ((skipped++))
            # have a error
            error=1
        fi
    fi
}

_Do() {
    # if have error, skip
    if [ "$error" == "0" ]; then
        mkvmerge -o "$outputmkv" --no-subtitles --no-track-tags --no-global-tags --disable-track-statistics-tags --ui-language en_US "$mkvfile" >> "$outputlog"
        if grep -q -i Error "$outputlog"; then
            ((errors++))
            echo -e "mkv-substrip: Error found in file. File corrupted/damage!?\n" >> "$outputlog"
            echo -e "Error! File corrupted/damage!?"
        else
            echo -e "Done!"
        fi
    fi
}

_Summary(){
     echo "mkv-substrip: End log" >> "$outputlog"
    echo " "
    echo "ALL DONE!"
    echo ""
    echo "Summary:"
    echo ""
    echo "Total of MKV files: $files"
    echo "Skipped files: $skipped"
    echo "Errors detected: $errors"
    echo ""
    echo "Checkout the output folder:"
    echo "$outputdir"
    echo ""
    exit
}

# if set "-f" == force to remuxing every mkv file, even if don't have any subtitle (skip checkSub procedure)
[ "$2" == "-f" ] && checksub=0 || checksub=1


# checks if the directory exists
if [ -d "$1" ]; then

    # void problems with relative path
    realdir=`readlink -f $1` 
    
    # checks if the directory is writable
    if [ ! -w "$realdir" ]; then
        echo ""
        echo -e "Error: The folder is not writable.\nCheck if it have right permissions."
        echo ""
        exit
    fi

    # check if the folder have any mkv file (insensive case)
   if [ -z "`find "$realdir" -maxdepth 1 -iname '*.mkv' -print0 -quit`" ]; then
        echo ""
        echo -e "Error: Couldn't find any MKV file in this location:\n\n$realdir"
        echo ""
        exit
    fi
 
    outputdir="$realdir"/output/
    mkdir -p "$outputdir" >/dev/null
    echo -e "mkv-substrip.sh\n"
    echo "Processing files..."
    errors=0
    skipped=0
    files=0

    # Looping through files with spaces in the names (insensive case wildcard in find and works with white space)
    # http://unix.stackexchange.com/a/9499/99915
    # backup IFS
    OIFS="$IFS"; IFS=$'\n'
    for mkvfile in `find "$realdir" -maxdepth 1 -iname '*.mkv' -print`; do
        error=0
        echo -n "'"`basename "$mkvfile"`"'... "
        outputlog="$outputdir`basename "$mkvfile"`.log"
        outputmkv="$outputdir`basename "$mkvfile"`"
        ((files++))

        # begin to logging
         echo "mkv-substrip:" > "$outputlog"
        _checkSub
        _Do
    done
    # restore IFS
    IFS="$OIFS"
    _Summary
fi

# checks if file exists and if current folder is writable.
if [ -f "$1" ]; then
    files=1
    error=0
    errors=0
    skipped=0

    mkvfile=`readlink -f $1` 
    if [ ! -w "`dirname "$mkvfile"`" ]; then
        echo ""
        echo -e "Error: The folder is not writable.\nCheck if it have right permissions."
        echo ""
        exit
    fi
    echo -e "mkv-substrip.sh\n"
    echo "Processing file..."
    echo -n "'"`basename "$mkvfile"`"'... "
    outputdir="`dirname "$mkvfile"`"/output/
    outputlog="$outputdir`basename "$mkvfile"`.log"
    outputmkv="$outputdir`basename "$mkvfile"`"
    mkdir -p "$outputdir" >/dev/null
    # begin to logging
     echo "mkv-substrip: Start log" > "$outputlog"
    _checkSub
    _Do
    _Summary
fi

echo ""
echo -e "Error: Nothing to do.\nTry again!"
echo ""
echo "Usage:"
echo "      For a folder: mkv-substrip.sh /home/user/folder-to-mkv-files"
echo "      For a file: mkv-substrip.sh /home/user/file-with-subtitle.mkv"
echo "      For a local dir: mkv-substrip.sh ."
echo ""