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Only one sample of this codec type exists (, linked above). That sample contains a single frame that is 238 bytes large and contains QuickTime-style atom information. The file also contains a single RPZA frame. Apple QuickTime Player apparently includes native support for this fire codec. Playing the file displays a logo backed for a fire animation in which the timeline does not move:


One guess is that the RPZA frame contains the logo while the fire frame contains instructions and parameters for animating the fire backdrop.

FourCCs seen within the chunk of fire data include:

  • sean
  • what
  • fire
  • fgdc
  • bckc
  • rotc
  • sprd
  • decy
  • watr
  • rset