node ffmpeg module stuck more than one file - node.js

Question

when I read more than one file it will be stuck and also hang my pc. I need to restart my pc
on one file or 5 files it will work perfectly but not more than 5 files
if anyone know this issue let me know
const ffmpegPath = require('#ffmpeg-installer/ffmpeg').path
const ffmpeg = require('fluent-ffmpeg')
ffmpeg.setFfmpegPath(ffmpegPath)
const testFolder = './videos/';
const fs = require('fs');
fs.readdir(testFolder, async(err, files) => {
try {
for(let i = 0; i < 10; i++){
if(files[i] != '1 Surah Fatiha Dr Israr Ahmed Urdu - 81of81.mp4'){
let converter = await ffmpeg(`./videos/${files[i]}`)
await converter.setStartTime('00:00:00').setDuration('30').output(`./outputfolder/${files[i]}`).on('end', function(err) {
if(err) {
console.log(`err durinng conversation \n ${err}`)
}
else{
console.log(`Done ${files[i]}`);
}
}).on('error', function(err){
console.log(`error: ${files[i]}`, err)
}).run()
}
}
} catch (error) {
console.log(error)
}
});

Answer 1

Your computer is crashing because fluent-ffmpeg is not asynchronous, this makes your code run in a loop running ffmpeg several times without waiting for the previous video to complete processing, consequently consuming all your processing power.
I created an asynchronous function called renderVideo and changed the for loop to the for of loop, as only it is able to wait for an asynchronous function.
The code looked like this:
const ffmpegPath = require('#ffmpeg-installer/ffmpeg').path
const ffmpeg = require('fluent-ffmpeg')
ffmpeg.setFfmpegPath(ffmpegPath)
const fs = require('fs');
const testFolder = './videos/';
fs.readdir(testFolder, async(err, videos) => {
try {
for(let video of videos){
if(video != '1 Surah Fatiha Dr Israr Ahmed Urdu - 81of81.mp4'){
await renderVideo(video)
}
}
} catch (error) {
console.log(error)
}
function renderVideo(video){
return new Promise((resolve, reject)=>{
let converter = ffmpeg(`./videos/${video}`)
converter
.setStartTime('00:00:00')
.setDuration('30')
.output(`./outputfolder/${video}`)
.on('end', (done)=> {
resolve(done)
})
.on('error', (err)=> {
reject(`The video ${video} return with error: ${err}`)
})
.run()
})
}
})
I also changed the names of some variables to make sense in the current code.