RM
From MobileRead
(Redirected from RMVB)
RM is an extension for ReadMedia files. They can be either video or audio. Also .RA (Read Audio) and RMVB RealMedia Variable Bitrate.
[edit] Overview
These are proprietary container formats created by Real Networks. They are intended and used for Internet streaming. An RM file has a constant bitrate while RMVB has a variable bitrate. RA was the original audio file format but the extension is seldom used anymore.
See Wiki Multimedia for information on the internal format of these files.