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MUS
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The '''MUS''' format is a slightly altered [[Wikipedia:Musical Instrument Digital Interface|MIDI]] format, created for [[DMX]] and used in the [[Doom engine]] soundtracks. MUS files are nearly identical to MIDI files, only slightly more compact. The file format has a size limit of 65536 bytes.
Support for standard MIDI files in [[vanilla Doom]] was added in [[Versions of Doom and Doom II#v1.5|version 1.5]], which meant [[WAD]] authors no longer needed to convert MIDI files to MUS. However, since this was achieved by the game running MIDI2MUS internally when needed, authors looking for vanilla compatibility should make sure that the MIDI file they include ''can'' be successfully converted. Vanilla [[Heretic]] and [[Hexen]], derived from version 1.2 of the Doom code, still require that music be converted to MUS format before inclusion in a WAD. In the DMX source code, the MUS format is referred alternatively as MUS, RTM, Real Time Music, and Game Music Format.
==Limitations==
The MIDI format uses the value 127 as the maximum possible volume in volume change events; MUS allows for higher values. A MUS->MIDI converter that does not take this into account might end up glitching the volume on certain channels. "[[Final Doom TNT music|Smells like Burning Corpses]]" is known to be affected by this problem.
The MIDI3MUS works under modern operating systems.
==External links==
*{{idgames|id=1123|title=MUS2MIDI converter}}
*{{idgames|id=4525|title=QMUS2MIDI converter}}
*{{dwforumsp|id=980861|title=MIDI3MUS converter}} on [[Doomworld forums]]*{{moddingwiki|title=MUS formatFormat}}
[[Category:Music]]
[[Category:WAD lumps]]
