(PECL imagick 2.0.0)
Sets the image ticks-per-second
bool Imagick::setImageTicksPerSecond ( int $ticks_per_second )
Adjust the amount of time that a frame of an animated image is displayed for.
Note:
For animated GIFs, this function does not change the number of 'image ticks' per second, which is always defined as 100. Instead it adjusts the amount of time that the frame is displayed for to simulate the change in 'ticks