Sometimes this has to do with the way the disc in encoded. The optimum use of the bits available it to align the image on a 16 line boundry. MPEG works on blocks of 16 lines. If you align the image exactly in the center sometimes the top and bottom of the image are using very little of a 16 row block and that's a lot of wasted bits of data.
It sounds like you are viewing a 2.21:1 or 2.35:1 disc. Do other discs with this higher aspect ration do this?
There is also a option in some Tosh sets that allows you to adjust the theater wide scroll. Menu->Wide->Picture scroll. I wouldn't adjust this if the majority of your discs are fine.
It sounds like you are viewing a 2.21:1 or 2.35:1 disc. Do other discs with this higher aspect ration do this?
There is also a option in some Tosh sets that allows you to adjust the theater wide scroll. Menu->Wide->Picture scroll. I wouldn't adjust this if the majority of your discs are fine.