The halos can be reduced by lowering the "sharpness" setting in the proc amp controls for the capture card drivers. But then, the image does not appear to contain so much detail (and I mean real detail rather than false detail from edge enhancement). This is what I did for Jedi, and several people commented that they were disappointed with the softer picture.
I haven't yet found a good filter that is able to remove the halos. And capturing a softer image then using a sharpening filter does not seem to give as good a result.