Script to remove subtitles

[TopSideControl 11]

I hope this is OK to post here but if not please delete it. I was having an issue with my Samsung tv and files with a large number of embedded subtitles. I know this isn't an Emby issue so I put together a script that runs through my mkv files and remuxes them removing all subs (I'm happy to let Emby grab the subs for me). 

You need the mkvmerge executable in a folder (sample path below) and it replaces the original files with the modified ones from the temp directory. Save the following as a .bat file and run it in the directory where the media is stored. It should skip any files without subtitles. 

@echo off
set "mkvmerge_path=C:\mkv\mkvmerge.exe"

powershell -Command "& { mkdir 'temp' -Force; Get-ChildItem -Filter *.mkv | ForEach-Object { $subtitles = & '%mkvmerge_path%' -i $_.FullName | Select-String 'subtitles'; if ($subtitles) { & '%mkvmerge_path%' -o ('temp\' + $_.Name) --no-subtitles $_.FullName }} }"

move /y "temp\*" .
rmdir /s /q "temp"
 

[Luke 40065]

Thanks for sharing.

[lolwut 16]

Hi, I made a nodejs version of your script that goes also through subfolders.

const fs = require('fs');
const path = require("path");

async function searchFile(dir, fileName) {
    const files = fs.readdirSync(dir);
    for (const file of files) {
        const filePath = dir + "/" + file;
        const fileStat = fs.statSync(filePath);
        const fpath = path.resolve(filePath);
        if (fileStat.isDirectory()) {
            await searchFile(filePath, fileName);
        } else if (file.endsWith(fileName)) {
            try{
                var execSync = require('child_process').execSync;
                console.log("Processing " + filePath);
                let output1 = execSync("C:\\mkv\\mkvmerge.exe -i \"" + fpath + "\"");
                if (output1.includes("subtitles")) {
                    console.log("Subtitles Found " + filePath);
                    output2 = execSync("C:\\mkv\\mkvmerge.exe -o \"" + fpath + ".temp\" --no-subtitles \"" + fpath + "\"");
                    if(output2.includes("Multiplexing") && fs.existsSync(fpath + ".temp")){
                        console.log("Subtitles Removed " + filePath);
                        fs.unlinkSync(fpath);
                        console.log("Original File Removed" + filePath);
                        fs.renameSync(fpath + ".temp", fpath);
                        console.log("Process Complete (Subtitles Removed)" + filePath);
                    }else{
                        console.error('Error ' + filePath + " : " + output2);
                    }
                } else {
                    console.log('Process Complete (No Subtitles Found) ' + filePath);
                }
            }catch(e){
                console.error('Error ' + filePath + " : " + e);
            }
        }
    }
}

searchFile('./', 'mkv');

Save it as javascript file for example mkv.js at base directory of a library 

Then call

node mkv.js

You have to have nodejs installed for this to work.

Edited April 10 by lolwut
fixed script error