uploader.js

//uploader
var http = require('http');
var formidable = require('formidable');
var static = require('node-static');
var file = new static.Server('.');
var fs = require('fs');
const { exec } = require('child_process');

http.createServer(function (req, res) {
    if(req.url == '/fileupload'){
        var form = new formidable.IncomingForm();
        form.parse(req,function(err, fields, files){
            if(err) console.log(err);
//            console.log(files);
            let audio = files.audioFile;
            var oldpath = audio.path;
            let ext = String(audio.type).split('/')[1];
            let timestamp = (new Date()).getTime();
            let newpath = `audio/${timestamp}`;

            let ffmpeg = `ffmpeg.exe -i ${oldpath} -b:a 128k ${newpath}.mp3`;


//            fs.rename(oldpath, newpath+ext, function(err){
//               if(err) throw err;
//            });
            exec(ffmpeg, (err, stdout, stderr) => {
              if (err) {
                console.log(err);
              }
              console.log(`stdout: ${stdout}`);
              console.log(`stderr: ${stderr}`);
              res.write(newpath);
              res.end();
            });

        });
    }else{
        file.serve(req, res);
    }
}).listen(8080);
console.log('file uploader started at port 8080');