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What is a 4XM file?
A 4XM file is a video created using 4X Movie, a middleware video compression program developed by 4X Technologies. It contains a cutscene played in a video game. 4XM files were used in games such as Alone In The Dark: The New Nightmare, Britney's Dance Beat, and The Messenger, among others.
4X Technologies was a French software company that was founded in 1997 and produced a variety of middleware applications before closing in 2003. Video game developers such as Infogrames and THQ used 4X's 4X Movie application to compress their games' cutscenes into reasonably-sized video files that did not take up too much disk space. Developers could also include multiple languages' worth of audio tracks within a 4XM file.
In 2002, 4X Technologies founded its own video game development studio, called 4X Studio. Ironically, 4X Studio did not use 4XM files in its own video games.