Stardock VDO

Company: Stardock Entertainment Game: Entrepreneur

This is a simple animation format used mostly for the animated title screen of the game.

File header (values are little-endian):

 5 bytes - "VID02"
 4 bytes - video width
 4 bytes - video height
 4 bytes - number of frames
 768 bytes - palette

Frame data starts with one byte of coding mode and 4-byte payload size. Known compression modes are:

• 0 - raw frame data
• 1 - full-frame RLE (top bit - copy/run, low 7 bits - operation length minus one)
• 2 - RLE-compressed partial frame (same compression as mode 1 but data may end at any moment)
• 3 - sparse RLE-compressed update (now 1-2 top bits denote the operation and low 6-7 bits its length minus one: 00xxxxxx - copy, 01xxxxxx - run, 1xxxxxxx - skip)
• 4 - same as mode 2 but starts with 4-byte offset at which frame should be updated
• 5 - same as mode 3 but starts with 4-byte offset at which frame should be updated