Tu znajdziesz łatki do programu mplayer (THE Linux Movie Player).
http://www.mplayerhq.hu/

łatka: mplayer-expand.diff

A little hack for -vf expand: expand with no arguments does nothing; with this
patch it automatically calculates expanded size to match monitor_aspect based
on original frame dimensions. Useful for having subtitles at the very bottom
of the screen instead of bottom of video frame.