(Windows Media Video) A video compression format for several codecs by Microsoft, designed originally for streaming applications on the Internet. It has also become adopted as a video format compatible with Blu-Ray discs. It is often compared to MPEG-4 and H.264 in terms of video quality. Found on http://www.flv.com/glossary.html
Windows Media file with Audio and/or Video (WMV): You can use a .wmv file either to download and play files or to stream content. The .wmv file format is similar to the .asf file format. MS Sample File Found on http://www.videohelp.com/glossary?W