iSlide > Extensions > Scale Time
The interface of "Scale Time"
Animation duration of current slide
Set scale ration: The default scale ratio is 1, which is the default length of PowerPoint animation
Estimated animation duration after scaling
Set application range
The total duration of a PowerPoint animation is 4 seconds, including a 2-second animation delay. If I adjust the [Scale Time] to 0.5, the duration is scaled to 50% of the original animation. That is, the total duration of the animation becomes 2 seconds and the animation delay becomes 1 second.