The camera app on your iPhone can capture slow-motion video in two different speeds; here's what you need to do to adjust it.

How does the iPhone handle this transition from real speed to slow motion speed? In other words, what is the time rate of change of the frame rate during the transition.

It's easy to speed up a slow-motion video on your iPhone, and you don't need a third-party tool to do it either.

To remove the slow-motion effect from your video and return it to regular speed, all you need to do is move the sliders at either end of the slow-motion section together.