Animated-GIF timing.
Optional
Frames per second (default 8). The frame delay is round(100 / fps) centiseconds saturated to the GIF's 16-bit field, as the reference's cast does: 0 gives 65 535 centiseconds, a negative or NaN value 0, anything above 200 also 0.
round(100 / fps)
0
NaN
Animated-GIF timing.