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CMV

From Dwarf Fortress Wiki
Revision as of 01:07, 15 September 2021 by Quietust (talk | contribs) (There really aren't any 3rd-party CMV players anymore - Jifodus's player is gone (was only hosted on Geocities, which is long gone), and the DFMA player uses Flash (which no longer works either))
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xTATTEREDx  · +FINE+  · *SUPERIOR*  · ≡EXCEPTIONAL≡  · ☼MASTERWORK☼
v50.14 · v0.47.05
This article is about the current version of DF.
Note that some content may still need to be updated.

The CMV file format is used for recording movies within Dwarf Fortress. Movies can be recorded in-game by pressing ; from anywhere within the game and following the instructions. CMV files can be played back in-game from the same ; menu (which works from any screen, including the opening menu screen) or by using a 3rd party player.

Tools also exist to convert CMV files to animated .gif format, such as milo christiansen's CMV to GIF command line utility.

Movie Archive

Since September 2007, members of the DF community have been able to share and watch CMV movies with other players in the community through the movie pages on the DF Map Archive. This was thanks in part to gonbon who wrote and provided the flash based CMV Player for use in the community.

Historical notes

In August 2008 Toady One upgraded the recording capabilities of Dwarf Fortress to support grid sizes larger than the standard 80x25.

CCMV File format

In order to boost the compression of CMV files, SL introduced a Compressed CMV file format (CCMV) using a single pass through zlib on the final file data. This compression is compatible with the Flash player on the DFMA. The smaller file size means quicker downloads but breaks any streaming functionality that would have been possible with the standard CMV file format.

File format

  • Jifodus's user page has a table describing the CMV file format.
  • Markavian's user page has an updated version expressed as a C# CMV Class, based on optimization code written by SL, and header information forwarded by Toady One.


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