Eirudo

<p>Embed YouTube videos and keept their aspect ratio, just using simple shortcode.</p>
<ul>
<li>Simple shortcode, can be used in the posts or widgets.</li>
<li>Using default YouTube Embed Code (iframe), but make it responsive</li>
<li>Custom aspect ratio, if you want set different porpotion size.</li>
<li>Auto centered position. So if you insert it on your post section, the video always on center-aligned.</li>
<li>Lazy Load supported.</li>
<li>100% Free! And no ads or even trackers inside.</li>
</ul>
<h3>Arbitrary section</h3>
<h3>A brief Markdown Example</h3>
<p>Pros:<br />
1. Simple, only using shortcode to use for individual video each shortcode<br />
2. Lazy Load supported<br />
3. Custom parameters for advanced use</p>
<p>Cons:<br />
1. Only for simple use,not for advanced playlist. Embedding one video for each 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

Embed responsive YouTube videos using simple shortcode. Lazy Load supported.

zykhan

<p>Display your favorit Youtube videos on posts or pages. Easy to customize and support multi-widget.</p>
<h4>Options</h4>
<ul>
<li>1.Admin Panel for Player settings like height and width</li>
<li>2.Shortcode with videos code attributes</li>
<li>3.Easly customizable Stylesheet.</li>
</ul>
<h4>Usage</h4>
<ul>
<li>For usage see other notes tab.</li>
</ul>
<h4>Credits</h4>
<ul>
<li>1.YouTube JavaScript API Player with Playlist.</li>
</ul>
<h3>Usage</h3>
<ul>
<li>Use shorte code [yt_playlist vdid=”tGvHNNOLnCk,wvsboPUjrGc” novd=”2″] in your post/page.Here “novd” is number of videos.</li>
<li>Display as much videos as you want in playlist</li>
<li>You can set playlist by changing #ytplayer_div2 style in style sheet.</li>
<li>Videos codes should be separated with comma.</li>
<li>Use as widget write shortcode [yt_playlist vdid=”tGvHNNOLnCk,wvsboPUjrGc”] in text widget.</li>
<li>http://www.youtube.com/watch?v=PDORoaB_-9A; in this url  “PDORoaB_-9A”is video code and should go in short code attribute.
</li>
<li></li>
<li>Note:if your theme does not support widget shortcode put  “add_filter(‘widget_text’, ‘do_shortcode’)” in yout function.php file.</li>
</ul>


Youtube Player with Playlist Plugin

Display your favorit Youtube videos on posts or pages. Easy to customize and support multi-widget.

Simple YouTube Responsive vs Youtube Player with Playlist Plugin