WMV (Windows Media Video) is a digital video file format developed by Microsoft for use on Windows operating systems. It is a compressed video format that uses various video codecs, including Windows Media Video 7, 8, 9, and 9 Advanced Profile, to provide high-quality video with efficient compression. WMV files are widely used for video streaming and playback on Windows-based devices and can be played back on Windows Media Player and other compatible media players. They are also compatible with various video editing software applications and can be edited and converted to other video file formats like MP4 or AVI using compatible media conversion software. Overall, WMV is a useful video file format for Windows-based video content distribution, particularly for online streaming and playback. However, it is not as widely used as more modern video file formats like MP4 or MOV.