Was there ever a solution to this?
I am trying to get this sorted and cannot do it.
The only way I can get the video to appear across the spread is to have it run fullscreen, but when the video ends and closes the flipbook is still in fullscreen and the navigation buttons don't work.
The video runs inside an MSO and I tried adding a button to close the video and come out of fullscreen but the button disappears as soon as the video goes into fullscreen.
This is a bit of a nightmare and, as usual, happening on a job with a deadline!