WMV (Windows Media Video) - definition It is a series of video codec & their corresponding video coding formats developed by Microsoft. It is a part of Windows Media framework. Nowadays it is less used video extension. Related Terms:2GApple AirPlayaptXAspect RatioAVRCP (Audio/Video Remote Control Profile)BootBroadcastBufferCIF (Common Intermediate Format)DLNA (Digital Living Network Alliance)