MV is an abbreviation used in several contexts.
In geography:
In science and technology:
9K114 Shturm (Russian: 9К114 «Штурм»- "shturm" means storm (assault) in English) is a SACLOS radio guided anti-tank missile system of the Soviet Union. Its GRAU designation is 9K114. Its NATO reporting name is AT-6 Spiral. The missile itself is known as the 9M114 Kokon (Cocoon).
The missile was developed by the Kolomna Machine Design Bureau, which was also responsible for the 3M6 Shmel and 9M14 Malyutka. Work on the missile began in 1967, with the hope of using the missile on Mi-24s. However, delays forced the design of an upgraded Falanga system (9M17 Skorpion) using SACLOS guidance as a stopgap. Testing of the missile was completed in 1974, and it was accepted into service in 1976. The missile has no direct western counterpart, though, in role, it is closest to the AGM-114 Hellfire, and in guidance method, to the MGM-18 Lacrosse.
It was originally given the NATO designation AS-8, before being redesignated as AT-6.
The missile can be deployed on a variety of platforms, including the Mi-24V and from 1979-onwards the MT-LB based 9P149 tank destroyer. There is also a shipborne version of the missile, with the launcher holding six missiles.
The M4V file format is a video container format developed by Apple and is very similar to the MP4 format. But M4V files may optionally be protected by DRM copy protection.
Apple uses M4V to encode video files, such as TV episodes, movies, and music videos, in its iTunes Store. The copyright of M4V files may be protected by using Apple's FairPlay DRM copy protection. To play a protected M4V file, the computer needs to be authorized (using iTunes) with the account that was used to purchase the video. However, unprotected M4V files may be recognized and played by other video players by changing the file extension from ".m4v" to ".mp4". Under QuickTime, M4V video with FairPlay attached to it is identified as AVC0 Media.
Besides Apple iTunes and the Apple QuickTime Player, M4V files can also be opened and played with Media Player Classic, K-Multimedia Player, RealPlayer, Zoom Player, VLC media player, MPlayer, DivX Plus Player, and Nero Showtime (included with Nero Multimedia Suite). The format, with DRM removed, can also be played in the webOS Video Player for use on the Palm Pre, Palm Pixi smartphones. It is also playable by the Android operating system with its video player. It is used as the default video conversion format for HandBrake and Air Video Server on the Macintosh.