Hello, when watch a film with letterbox on top and bottom the subtitle remove all the lights on the bottom. Only the white from the subtitle will appear. And all the other lights disappears. when no one speaks the lights come back to disappear again when subtitles are back on.
how to fix this?
This is normal, because the next light color going from the border to the inner area of the picture is the white of the subtitle.
If you can adjust the subtitles in the player, move them a litle higher, to avoid the dark area.