If you are copying and pasting the embed HTML from sites like YouTube then this plugin is best to use. Just simply click one of the new buttons that this plugin adds to the write screen (rich editor included) and then paste the URL that the video is located at into the prompt box — easy as that. You can fully configure how the videos are displayed (width, height, colors, alignment on the page) and much more. Your site will even stay (X)HTML valid unlike with the code provided by most video sites.
Currently supports these video sites:
* YouTube (including playlists)
* Google Video
* VideoPress aka WordPress.com Video NEW!
* Flickr videos
As well as these file types:
* Flash Video Files (FLV)
* QuickTime (MOV, etc.)
* Generic video files (AVI, MPEG, WMV, etc.)
Requires WordPress Version: 2.8 or higher