Andr&eacute; Boekhorst

The Live Video Annotation plugin allows you to add timed footnotes to a YouTube video while you are watching the video. Visitors can see these notes later while watching the video. It’s really easy to use and the interface is designed as if you were chatting away.
It can be used for:
<ul>
<li>Add notes to video lectures.</li>
<li>Give translations to a video.</li>
<li>Add bookmarks to a video.</li>
<li>Easily add links to external resources mentioned in a video.</li>
<li>Create your own Pop-Up Video.</li>
<li>Whatever you can think of.</li>
</ul>
More Information on <a href="http://www.andreboekhorst.nl/wordpress/live-video-annotation-plugin/" title="Andre Boekhorst WordPress Amsterdam" rel="nofollow ugc">the authors website</a>.

Live Video Annotation

The Live Video Annotation plugin allows you to add timed footnotes to a YouTube video. Visitors can see these notes later while watching the video.

a-fiore

Adds inline annotations to WordPress using the Open Knowledge 
Foundation’s Annotator tool.
<h3>Features</h3>
<ul>
<li>Automatically includes the Annotator JavaScript code and its third party 
party dependencies (i.e. <code>jquery.js</code>, and <code>json2.js</code>) into the currently active theme (no HTML editing needed).</li>
<li>Offers the option to configure the annotable content area from the WordPress settings page.</li>
<li>Provides blog administrators with the option to decide whether to display only authenticated users’ annotations or also annotations made by anonymous users.</li>
<li>Provides a rudimentary regular expressions’ based mechanism for configuring in what pages/blog sections the Annotator widget should be included.</li>
</ul>

Annotator

Adds inline annotations to Wordpress using the Open Knowledge Foundation's Annotator tool.

Live Video Annotation vs Annotator