Follow the steps described in the readme.txt file to install Interactive Video Plugin. After activating it, you'll be able to upload your multimedia files to the blog in one of two different ways: by physically storing them on your own server and publishing a link in the post, or by using the option, 'Add Interactive Video', which will store your resources on Kaltura.com.
The main advantage of using the second option is that it opens up the possibility to use an online video editor that will help you combine various video clips into one, and apply transitions and effects. Other resources that you can add from this option are the following: webcam shots and video from YouTube, MySpace, and Kaltura.
Requires WordPress 2.5 or higher.