Eirudo

<p>A lightweight plugin to embed YouTube videos while keeping the correct aspect ratio — all with a simple shortcode.</p>
<ul>
<li>Very simple shortcode. Use it in posts or widgets.</li>
<li>Uses the default YouTube iframe embed, but fully responsive.</li>
<li>Custom aspect ratio if you want a different video size.</li>
<li>Automatically centered, so your video always looks neat in your content.</li>
<li>Lazy load support to improve performance.</li>
<li>100% free — no ads, no trackers, no funny business.</li>
</ul>
<h3>Arbitrary section</h3>
<h3>A brief Markdown Example</h3>
<p>Pros:<br />
1. Simple and lightweight — one shortcode per video<br />
2. Lazy load support<br />
3. Extra parameters available for advanced users</p>
<p>Cons:<br />
1. Designed for simple embeds only (no playlist support, one video per shortcode)</p>


Simple YouTube Responsive

Perfect

You can add a line to your functions.php to make videos responsive if you're doing your own theme. However, if you're not, this plugin works beautifully and gives other options like lazy load, etc. 

If doing your own theme, add: add_theme_support( 'responsive-embeds' );

Works Beautifully

Easily embed responsive YouTube videos using a simple shortcode. Lazy load included.

Ciprian Popescu

<p>Display a YouTube player (with an optional playlist) on any post or page using a simple shortcode. The plugin supports a static YouTube player (no video title) and a dynamic one (video title) using the YouTube Data API v3.</p>
<p>Embedded players must have a viewport that is at least 200px by 200px. If the player displays controls, it must be large enough to fully display the controls without shrinking the viewport below the minimum size. We recommend 16:9 players be at least 480 pixels wide and 270 pixels tall.</p>
<p>The YouTube player is responsive and it will work on all themes and screen sizes!</p>
<ul>
<li>Uses a simple shortcode which can be used in posts, pages, custom post types, widgets, reusable blocks.</li>
<li>Uses the default YouTube Embed Code (iframe) with optional privacy-enhanced mode.</li>
<li>Uses correct aspect ratio for videos using a Fluid Video technology.</li>
<li>Uses native HTML5 Lazy loading.</li>
<li>Used modern code and is optimised for speed.</li>
<li>100% free with no ads inside.</li>
</ul>
<h3>Static Playlist Player for YouTube</h3>
<p>Example: <code>[yt_playlist mainid="xcJtL7QggTI" vdid="xcJtL7QggTI, AheYbU8J5Tc, X0zGS4-UKgg, 74SZXCQb44s, 2M0XCH9q3YI, CTNgVQGLy24, B8RpvoHsgI8"]</code></p>
<h3>YouTube V3 API Playlist Player</h3>
<p>Example: <code>[yt_playlist_v3 mainid="xcJtL7QggTI" vdid="xcJtL7QggTI, AheYbU8J5Tc, X0zGS4-UKgg, 74SZXCQb44s, 2M0XCH9q3YI, CTNgVQGLy24, B8RpvoHsgI8"]</code></p>
<h3>YouTube Channel Feed with Lightbox Player</h3>
<p>Example: <code>[yt_feed channels="UCpVm7bg6pXKo1Pr6k5kxG9A" results="9"]</code></p>
<p>Check out the <a href="https://getbutterfly.com/wordpress-plugins/youtube-playlist-player/" rel="nofollow ugc">official Playlist Player for YouTube website</a> and a <a href="https://getbutterfly.com/wordpress-plugins/youtube-playlist-player/" rel="nofollow ugc">Playlist Player for YouTube demo</a>.</p>
<p>Check out a <a href="https://kmproperty.ie/buy/videos-virtual-tours/" rel="nofollow ugc">Property Videos & Virtual Tours</a> demo.</p>
<p>Check out more <a href="https://getbutterfly.com/wordpress-plugins/" rel="nofollow ugc">WordPress plugins here</a>.</p>


Playlist Player for YouTube

Display a YouTube player (with an optional playlist) on any post or page using a simple shortcode.

Simple YouTube Responsive vs Playlist Player for YouTube