Winnow Video

Another hardware codec like ATI_VCR1, Indeo_2 or Video_XL. It uses YUYV format and stores deltas with static code.

Codes used really are simple unary code with following sign bit and 11111111 code used as escape.

Each component may be decoded this way:

 code = get_code();
 if(code == ESCAPE)
   newval = code;
 else
   newval = oldval + (code << SHIFT);

SHIFT = 6 (may be another, but no samples with another value are known), ESCAPE = 15 (code for ESCAPE is metioned above)