The Video will overwrite dialog boxes and all other graphics. This is done for performance reasons. What you can do if your video area does not cover the full screen, is to set the dialog position for the individual display pages so that they are outside of the area for the video control.
Questions
What you can do if your video area does not cover the full screen, is to set the dialog position for the individual display pages so that they are outside of the area for the video control.