[J7N]

Choose a display resolution which is equal to or (a little) greater than the video size. If you have a CRT monitor, it will look much better than resizing. If "do not resize video in full screen" is OFF, then you must be able to also zoom in and out manually.

I don't know how you managed to "decentrize" your video, but not matter what is its placement, you should be able to move it around using keyboard keys "move picture up/down/left/right". Buggy drivers for Win98 (if you are using it) can cause video not always to be placed and/or scaled as expected.