HNM: Difference between revisions

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* Company: [[CRYO Interactive Entertainment]]
* Company: [[CRYO Interactive Entertainment]]


HNM is a multimedia format used in some computer games by CRYO.
HNM is a multimedia format used in many computer games by CRYO.


There are at least three versions of the HNM format:
During it's lifetime, format has been changed at least 6(+1) times.
HNM, HNM4 and HNM6.
* HNM (0) aka HNM Zero. Used in debut Cryo' games - Dune (floppy version) and KGB to display animated Cryo' logo. Uses typeless chunks and single rotated palette for the whole movie. No sound.
 
* HNM (1) Improved version, with typed chunks, dynamic palettes and (optional) soundtrack.
HNM and HNM4 format animations are used in games like Commander Blood and Lost Eden. One of the differences is that HNM4 animations don't seem to contain an audio track, while the HNM ones do contain uncompressed PCM audio data.
* HNM4 First version, where HNM tag explicitly written in the file header. Used in many games released during 1995-1997.
Both HNM and HNM4 are palette-based formats.
* HNM4 (A) Hi-resolution format spin-off, used in ALIENS game. While all file tags indicates genuine HNM4, interframe (de)compression is not compatible.
 
* UBB2 Another spin-off, used exclusively in MegaRace 2 game. Same file structure as in HNM4, but completely reworked codec.
HNM6 is used by newer Cryo games made in the late 1990ies, e.g. China: The Forbidden City and probably the Atlantis games. The audio format in these animations is similar to Cryo's Apc audio format.
* HNM6 Finally, movies comes in hi-color. Audio is also compressed now.


This forum discusses the coding algorithms used in the format: http://dune2k.com/forum/index.php?topic=18539.90
This forum discusses the coding algorithms used in the format: http://dune2k.com/forum/index.php?topic=18539.90
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* [http://www.mobygames.com/game/windows/persian-wars Persian Wars]
* [http://www.mobygames.com/game/windows/persian-wars Persian Wars]
* [http://www.mobygames.com/game/windows/philip-jos-farmers-riverworld Riverworld]
* [http://www.mobygames.com/game/windows/philip-jos-farmers-riverworld Riverworld]
* KGB
* Aliens


[[Category:Game Formats]]
[[Category:Game Formats]]

Revision as of 17:12, 17 July 2006

HNM is a multimedia format used in many computer games by CRYO.

During it's lifetime, format has been changed at least 6(+1) times.

  • HNM (0) aka HNM Zero. Used in debut Cryo' games - Dune (floppy version) and KGB to display animated Cryo' logo. Uses typeless chunks and single rotated palette for the whole movie. No sound.
  • HNM (1) Improved version, with typed chunks, dynamic palettes and (optional) soundtrack.
  • HNM4 First version, where HNM tag explicitly written in the file header. Used in many games released during 1995-1997.
  • HNM4 (A) Hi-resolution format spin-off, used in ALIENS game. While all file tags indicates genuine HNM4, interframe (de)compression is not compatible.
  • UBB2 Another spin-off, used exclusively in MegaRace 2 game. Same file structure as in HNM4, but completely reworked codec.
  • HNM6 Finally, movies comes in hi-color. Audio is also compressed now.

This forum discusses the coding algorithms used in the format: http://dune2k.com/forum/index.php?topic=18539.90

Games Using HNM