Arc Boost for Matter: Enlarge video player

index.css

.ednwsl8c {
  max-width: 800px !important;
  max-height: inherit !important;
}

index.js

function setYouTubePlayerDimensions(iframe) {
  iframe.setAttribute('width', '800');
  iframe.setAttribute('height', '400');
  iframe.style.width = '800px';
  iframe.style.height = '400px';
}

function checkAndSetIframeDimensions() {
  const iframe = document.getElementById('ytPlayer');

  if (iframe) {
    setYouTubePlayerDimensions(iframe);
  }
}

// Call checkAndSetIframeDimensions every 500ms until the iframe is found and its dimensions are set
setInterval(checkAndSetIframeDimensions, 500);