As opposed to the more common RealMedia container, which holds streaming media encoded at a constant bit rate, RMVB is typically used for multimedia content stored locally. Files using this format have the file extension “.rmvb.”
RMVB files are extremely popular for distributing Asian contents, especially Chinese television episodes and movies. For this reason, they have become noticeably present (though not entirely popular) on file sharing platforms such as BitTorrent, eDonkey, and Gnutella.
RMVB file is increasingly used for its efficient compression of video and audio files. It becomes famous due to its minimum size capacity enabling easy file transfer. However, RMVB file has one drawback that makes people think it very unfriendly and inconvenient to use---the incompatibility to play .rmvb file with many other players.