coderedcms/coderedcms/templates/wagtailembeds/embed_frontend.html

{% load wagtailembeds_tags %}

{% if embed.ratio %}
    {# If an aspect ratio is included, use the appropriate Bootstrap 4 class #}
    {% if embed.ratio > 0.9 %}
        <div class="embed-responsive embed-responsive-1by1">
    {% elif embed.ratio > 0.7 %}
        <div class="embed-responsive embed-responsive-4by3">
    {% elif embed.ratio > 0.5 %}
        <div class="embed-responsive embed-responsive-16by9">
    {% else %}
        <div class="embed-responsive embed-responsive-21by9">
    {% endif %}
{% else %}
    {# Otherwise, center it in a row, for things like Tweets. #}
    <div class="row justify-content-center">
{% endif %}

{# Embed the video with an absurdly high max width. #}
{% embed embed.url max_width=3840 %}
</div>