Subtitles on overlay not centered!

[skibby]

This is just a guess, please comment: I noticed, watching the whole movie with black strip on right, that at some point, subtitles are written to the black area, so it would be possible that the size of overlay is adjusted to max size needed to draw subtitles. If this is the case, then everything that we have to do, is to split the subtitles, that are cousing trouble, to more lines.