static S embedYoutube_newer(S youtubeID) {
  ret embedYoutube_newer(youtubeID, 300);
}

static S embedYoutube_newer(S youtubeID, int w) {
  ret embedYoutube_newer(youtubeID, w, sixteenToNine(w));
}

static S embedYoutube_newer(S youtubeID, int w, int h) {
  youtubeID = extractYouTubeID(youtubeID);
  ret ([[<iframe width="]] + w + [[" height="]] + h + [[" src="https://www.youtube.com/embed/{*}" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe>]]).replace("{*}", youtubeID);
}