Frames Per Second

Specifies the frame rate of the generated image, so you can change the playback speed.

Frames per second (FPS) works a bit differently for animated GIFs than it does for video. Instead of maintaining a constant rate of speed like video, animated GIFs place a pause between frames to mimic it (represented by the DelayTime and UnclampedDelayTime values in the metadata.

The fps parameter takes a positive integer and overrides these values (including any manual settings in the GIF file) to output the video at the frame rate requested.