This is the specifications for the image file which is handled by the Game Extractor plugin Viewer_ARC_10_DDSC_AVTX.

Endian Order:Little Endian
Compression:none
Encryption:None


This format is used by the following Games:
theHunter: Call Of The Wild *.ddsc
Second Extinction *.ddsc


This is the format specification information:
 
// HEADER
  4 - Header (AVTX)
  2 - Unknown (1)
  1 - Unknown (10)
  1 - Unknown (2)
  4 - Image Format? (77=DXT5, 80=BC4)
  2 - Image Width
  2 - Image Height
  2 - Unknown (8)
  2 - Unknown (8)
  1 - Unknown (11)
  1 - Unknown (11)
  2 - null
  8 - null
  4 - Image Data Offset (128)
  4 - Image Data Length
  4 - Unknown (16)
  84 - null
  
// IMAGE DATA
  // for each mipmap
    X - Image Data (DXT5/BC4)


Game Extractor is able to read files of this type, as well as files from thousands of other games. To give it a try, download Game Extractor (Basic Version) for free, and see what it can do.

For further information on this format, refer to the source code on our GitHub repository.
 
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