Ederson Peka

With this plugin, you can create as much “sidebars” (widget areas) as you need, and assign them in a per-page basis. (It’s only useful if your theme supports “sidebars”.)
WARNING: Updating from versions prior to 0.2.5 requires new set up.

Unlimited Page Sidebars

This plugin does exactly what it needs to and always works. It's great.

Does exactly what it needs to!

Assign one specific widget area (sidebar) to each page.

Kirsty Burgoine

Features Include: 
The ability to add video directly in to a page, post or any of your own custom post types using the video URL (not the embed code) and a Short code.
Fully responsive so will fill the width of the containing area and scale depending on screen size. No need to set a width and height, just set the width of the div your content sits in.
Support for custom post types. Automatically adds your custom post types to the settings screen so that you can choose which you would like to be able to add video to.
Multi instance responsive Widget to allow you to add videos to multiple widget ready areas.
<h4>Requirements</h4>
<ul>
<li>WordPress 3.0 + with WordPress Widgets</li>
</ul>

Responsive Video

This widget will display a Responsive YouTube or Vimeo video in pages / posts and sidebars.

Unlimited Page Sidebars vs Responsive Video