Information about .mpv4 File Extension

Media Player Classic is a compact open-source media player for Microsoft Windows. The application mimics the look and feel of the old, lightweight Windows Media Player 6.4 but integrates most options and features found in modern media players. It is often included in codec packs as a default media player.

Windows Media Player is a media player and media library application developed by Microsoft that is used for playing audio, video and viewing images on personal computers. In addition to being a media player, it includes the ability to rip music from and copy music to compact discs, burn recordable discs in Audio CD format or as data discs with playlists such as an MP3 CD, synchronize content with a digital audio player (MP3 player) or other mobile devices, and enable users to purchase or rent music from a number of online music stores.

VLC media player is a free and open source media player and multimedia framework written by the VideoLAN project. VLC supports many audio and video codecs and file formats as well as DVDs, VCDs, and various streaming protocols. It is able to stream over networks and to transcode multimedia files and save them into various formats. The default distribution of VLC includes a large number of free decoding and encoding libraries, avoiding the need for finding/calibrating proprietary plugins and codecs.

K-Multimedia Player (also known as The KMPlayer, KMPlayer or KMP) is a media player software for Microsoft Windows which can play a large number of formats including VCD, DVD, AVI, MKV, Ogg, OGM, 3GP, MPEG-1/2/4, WMV, RealMedia, FLV and QuickTime.