Feasibility -Video SlideCast

Hi Team,
We would like implement slide cast feature in one of the sites.

we found that the option is available in the Movie component refer screen shot (VideoSlideCast.png)
but not sure it is functioning or not because after checked the slide cast radio button video has not been played , we are not sure what is missing.

also we want to understand what are parameters required in order to make this SlideCast working in the Movie Component ?