public void Render(Rectangle subsRect, Rectangle frameRect, int xOffsetInPixels)
        {
            Rectangle r    = posRelativeToFrame ? frameRect : subsRect;
            int       posY = adjustPosY * r.Height / GUIGraphicsContext.Height;

            MpcSubtitles.Render(r.X, r.Y + posY, r.Width, r.Height, xOffsetInPixels);
        }