ktcy

const clientList = document.getElementById('client-list');
const mainVideo = document.getElementById('main-video');

mainVideo.addEventListener('loadedmetadata', () => {
  const {videoWidth, videoHeight} = mainVideo;
  const longest = Math.max(videoWidth, videoHeight);
  const size = 300;

  mainVideo.width = size * videoWidth / longest;
  mainVideo.height = size * videoHeight / longest;