Video control on keynote for ipad

Hi, I'm using for years now keynote on my desktop / macbook, which I find great, especially for video controls which were unavailable on power point.

Unfornutely video controls seem to be impossible on the ipad version of keynote while they are possible on powerpoint.

Why does apple always make things impossible on iOS???

Does someone have a idea how to control videos ? The tip with the keyboard does not work...

Thanks for your help