cutmovie.js

const ffmpeg = require('fluent-ffmpeg');
const moment = require('moment');

var myArgs = process.argv.slice(2);

//Convert Video
var filePath = myArgs[0];
var startTime = moment(myArgs[1], "HH:mm:ss.SSS");
var endTime = moment(myArgs[2], "HH:mm:ss.SSS");
var fileOutput = myArgs[3];

var diff = moment.duration(startTime.diff(endTime));
if (diff < 0) {
    diff = Math.abs(diff);
}
var d = moment.utc(diff).format("HH:mm:ss.SSS");

console.log(d);

ffmpeg(filePath)
.setStartTime(startTime.format("HH:mm:ss.SSS"))
.setDuration(d)
.output(fileOutput)

.on('end', function(err) {
    if(!err)
    {
      console.log('conversion Done');
    }

})
.on('error', function(err){
    console.log('error: ', +err);

}).run();