Macro to run a video in powerpoint

Hello,

I am in need of some help, i have a video in a powerpoint presentation.
What i need is a way or the video playing automatically without having to press play.
So im in slideshow i get to the slide with the video, i have to talk before the video plays, what i was thinking was is there a macro which when i click to move to the next slide it would play the video and then when i click again it would move to the next slide, and then just go through the presentation as normal.

Can this be done?

Any help would be great thanks