You can try to move the picture up /down by using Numpad keys 2 and 8
This way the 2nd subtitle line will still be visible..
Plus you can manually change the PanScan ratio by pressing "O"
Or you can uncheck the "Cut top and bottom of video in full screen mode" option (CTRL+P -> Video)
And enable "Remember PanScan/Zoom settings" (CTRL+P -> Video)