WMV is abbreviation for Windows Media Video. This is a format developed by Microsoft for Internet streaming and watching videos on a personal computer. Windows Media Video files are basically ASF (Advanced Systems Format) files that include audio, video or both, compressed with WMA (Windows Media Audio) and WMV (Windows Media Video) codecs.
This type of video can be played on a computer or on portable media players. The most beneficial feature of WMV is that this format allows large video files to be compressed, while the rich quality of the video is kept. Thanks to video compression inside this format, movies and other video programs can be easily viewed on a PC.