On The Fly YouTube Embeds creates a page on your site that will play any YouTube video based on the requested URL without having to create a new page for each individual video.
You’re then able to view any YouTube video on your site simply by navigating to a URL that includes a YouTube video ID.
This is useful for sites that want to host a lot of video content on YouTube, but provide a simple way for users to view them without leaving their site.
For example, if you were to navigate to something like <code>http://example.com/video/jOyFDvWf83w/</code> it would show you the YouTube video with the ID of <code>jOyFDvWf83w</code>
You could also replace that video ID in the URL with any other YouTube video ID and it’ll work as well.
You can play any YouTube video on your site without having to manually create a new page for it. Point visitors to the appropriate URL and it just works.

On The Fly YouTube Embeds

Creates a page on your site that will play any YouTube video based on the requested URL without having to create a new page for each individual video.

Konstantin Obenland

This plugin lets you specify a header image for each post, page, custom post type or archive page individually, from your default headers and custom headers.
It adds a meta box in the post edit screens with the header selection and a settings field in the edit profile and each taxonomy edit screen. 
If no specific header is specified for a post it will fall back to the default selection. 
There is no change of template files necessary as this plugin hooks in the existing WordPress API to unfold its magic.
Thanks to Erik T. for the idea to this plugin!

WP Display Header

This plugin is not compatible with WP version 4.8.1.

Not compatible

Select a specific header or random header image for each content item or archive page.

On The Fly YouTube Embeds vs WP Display Header