Unfortunately I can't trigger this reliably.
My hardware configuration is 3 monitors. Monitors #1 and #2 are connected to the primary video card, an AGP card. Monitor #3 runs off a PCI card. They are physically arranged #2, #1, #3. If I launch Videolan on monitor #3 and then drag it to monitor #2 sometimes it blanks out on the transition from #1 to #2. Dragging it to #1 will restore the image and it will remain if dragged back to #2.