I will break it down for you mate.
- My desktop resolution is 1600x900
- The games resolution is 400x240
When I use the direct show object it plays fine.
But the game is set to maximise and resize display so 400x240 fits 1600x900 (or any other resolution).
When the direct show is played it only fills 400x240 because that it's size, the same size as the frame.
So what we get is the direct show in the top left filling 400x240 and the rest of the 1600x900 is white because that's the background of the frame.
There is no automatic scale option in event editor or in the properties for direct show.
Direct show must scale to fit the users main desktop resolution which in my case mine 1600x900.
Hope this helps.