Kellen Mace

This plugin adds a play icon to the beginning of the page title whenever an embedded YouTube video is playing. When all videos on the page have stopped playing, the play icon is removed from the page title. This mimics the page title behavior when playing a video on youtube.com. If visitors to your site have several browser tabs open, this is a convenient way they can quickly identify which browser tab contains a web page that is playing video content (making noise).
Also included is the option to display a pause icon in the page title when a video is paused, and the ability to selectively disable the plugin on all pages, all posts, the front page, the home page or on sticky posts, if desired.

YouTube Play Icon

Displays a play icon in the browser tab/title bar when any embedded YouTube video is playing

Thoog_10

Rather than embedding video after video on a page or post, this plugin allows the user to consolidate those video embeds into a list that plays within one div.
<ul>
<li>This lets the user keep all their video embeds in one place, the Async Vid List settings page.</li>
<li>The presentation is more aesthetically pleasing to the viewer.</li>
<li>Only the video that is clicked on is loaded.</li>
</ul>
Multiple lists can be used on any page or post (or even sidebars) using the shortcode and the list ID.
The CSS is intentionally kept simple – feel free to customize it per your theme.
This plugin only uses one row in the wp_options table, so there is no database bloat.

Async Vid List

Lets the user create lists of video embeds that load and play asynchronously in one div

YouTube Play Icon vs Async Vid List