Does this happen to a particular DVD or to all DVDs? Can you post a screen shot?
Black bars on the top and bottom are normal, but not in the sides.
While playing back in VLC go to the "Video" menu and make sure that
"scale" is selected,
"aspect ratio" is set to
"default" and "zoom" is set to "
1:1".
If it looks something like this, its normal:
---
One more thing to realize here is that the resolution of a DVD is much lesser than that of your screen, so to fill your screen, you will need HD content.
Try playing one of these samples:
http://www.microsoft.com/windows/win...tshowcase.aspx
PS: I don't like codec packs personally. My suggestion would be to un-install it.