hugo/tpl/tplimpl/embedded/templates/shortcodes/youtube.html

{{- $pc := .Page.Site.Config.Privacy.YouTube -}}
{{- if not $pc.Disable -}}
{{- $ytHost := cond $pc.PrivacyEnhanced  "www.youtube-nocookie.com" "www.youtube.com" -}}
{{- $id := .Get "id" | default (.Get 0) -}}
{{- $class := .Get "class" | default (.Get 1) }}
<div {{ with $class }}class="{{ . }}"{{ else }}style="position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden;"{{ end }}>
  <iframe src="https://{{ $ytHost }}/embed/{{ $id }}{{ with .Get "autoplay" }}{{ if eq . "true" }}?autoplay=1{{ end }}{{ end }}" {{ if not $class }}style="position: absolute; top: 0; left: 0; width: 100%; height: 100%; border:0;" {{ end }}allowfullscreen title="YouTube Video"></iframe>
</div>
{{ end -}}