Since the 1990s, Media Composer has been the dominant non-linear editing system in the film and television industry, first on Macintosh and later on Windows. Initially released in 1989 on Macintosh II as an offline editing system, the application has since evolved to allow for both offline and online editing, including uncompressed standard definition (SD), high definition (HD), 2K and 4K editing and finishing. Avid Media Composer is a film and video editing software application or non-linear editing system (NLE) developed by Avid Technology.