CongBom

To get meta value in front-end, use <code>get_post_meta()</code> with meta key is <code>youtube_id</code>.
Example:
Print YouTube video ID: 
 ID, ‘youtube_id’, true);?>
Thumbnails: 
 <img src="http://img.youtube.com/vi/ID, ‘youtube_id’, true);?>/mqdefault.jpg” alt=”” />
Video player:
<iframe src="http://www.youtube.com/embed/ID, ‘youtube_id’, true); ?>” width=”588″ height=”331″ frameborder=”0″ allowfullscreen>

YouTube metabox

Create YouTube meta-box for post with live preview

Zach Tirrell

Matthew Batchelder

lucatume

Gustavo Bordoni

neillmcshea

GeoffBel

Victor Zarranz

Brian

András Guseo

leahkoerper

Juan Aldasoro

This is a tool for developers who want to turbo-charge their custom post type listings with metadata, taxonomies, and more. An intuitive interface for adding (and saving) complex filtersets is provided, along with a drag-and-drop interface for choosing and ordering columns to be displayed. Metaboxes are also automatically generated for all your metadata-entry needs.
<ul>
<li>Add columns to the post listing view</li>
<li>Filter post listings by custom criteria</li>
<li>Easily add metaboxes to custom post types</li>
<li>Automatically add registered taxonomies to post listings</li>
<li>Sort by post metadata</li>
</ul>
See docs/documentation.html in the plugin directory for full documentation.
The team at The Events Calendar stands by our work and offers light support every Wednesday to the community via the WordPress.org support forums. Feel free to ask a question if you’re having a problem with implementation or if you find bugs.
<h4>SUBMITTING PATCHES</h4>
If you’ve identified a bug and want to submit a patch, we’d welcome it at our <a href="https://github.com/the-events-calendar/advanced-post-manager" rel="nofollow ugc">GitHub page for Advanced Post Manager.</a> Simply cue up your proposed patch as a pull request, and we’ll review as part of our monthly release cycle and merge into the codebase if appropriate from there. (If a pull request is rejected, we’ll do our best to tell you why). Users whose pull requests are accepted will receive credit in the plugin’s changelog. For more information, check out the readme at our GitHub page. Happy coding!
<h3>Add-Ons</h3>
But wait: there’s more! We’ve got a whole stable of plugins available to help you be awesome at what you do. Check out a full list of the products below, and over on <a href="https://evnt.is/18wn" rel="nofollow ugc">our website</a>.
Our Free Plugins:
<ul>
<li><a href="https://wordpress.org/plugins/the-events-calendar/" rel="ugc">The Events Calendar</a></li>
<li><a href="https://wordpress.org/plugins/event-tickets/" rel="ugc">Event Tickets</a></li>
<li><a href="https://wordpress.org/plugins/gigpress/" rel="ugc">GigPress</a></li>
<li><a href="https://wordpress.org/plugins/image-widget/" rel="ugc">Image Widget</a></li>
</ul>
Our Premium Plugins and Services:
<ul>
<li><a href="https://evnt.is/18wi" rel="nofollow ugc">Events Calendar PRO</a></li>
<li><a href="https://evnt.is/197u" rel="nofollow ugc">Event Aggregator</a> (service)</li>
<li><a href="https://evnt.is/18wk" rel="nofollow ugc">Event Tickets Plus</a></li>
<li><a href="https://evnt.is/2g" rel="nofollow ugc">Community Events</a></li>
<li><a href="https://evnt.is/18wl" rel="nofollow ugc">Community Tickets</a></li>
<li><a href="https://evnt.is/fa" rel="nofollow ugc">Filter Bar</a></li>
<li><a href="https://evnt.is/2e" rel="nofollow ugc">Eventbrite Tickets</a></li>
</ul>

Advanced Post Manager

This plugin doesn't do anything. It says you have to install it and then get a developer to write some code to make it work. That means this isn't a plugin, it's just a useless piece of code. The plugin repository should only be for plugins that actually add some functionality to your WordPress website. This "plugin" is just taking up space and confusing people. Did the developers just get bored and decided not to finish their plugin? It should be removed from the plugin repository!

Should Be Removed

Turbo charge your posts admin for any custom post type with sortable filters and columns, and auto-registration of metaboxes.

YouTube metabox vs Advanced Post Manager