[wvxvw]

Доки говорят следующее:

Next in the header is the frame rate. It is supposed to be stored as a 16-bit integer, but the first
byte (or last depending on how you look at it) is completely ignored. So the frame rate is
12 fps.
Next is the frame count, which is also a 16-bit integer. So the frame count is 1.
0x000C ➜ 0x0C00 ➜ 0x0C ➜ 12 = frame rate