server-video.js

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

const server = http.createServer((req, res) => {
  
  if (req.url === '/video') {
    const videoPath = path.join(__dirname, 'test.mp4');
    const videoStat = fs.statSync(videoPath);

    res.writeHead(200, {
      'Content-Type': 'video/mp4',
      'Content-Length': videoStat.size
    });

    const readVideoStream = fs.createReadStream(videoPath);
    
    readVideoStream.on('data', (chunk) => {
      console.count('chunk');
      console.log(`
        size: ${chunk.length}, bytes, readed, sended.
      `)
      
    });

    readVideoStream.pipe(res);

  } else {
    res.writeHead(200, { 'Content-Type': 'text/plain' });
    res.end('Hello World, route not found');
  }
})

server.listen(4000, () => {
  console.log('Server is running on port 4000');
});