Optimizing brightness of movie file

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http://askubuntu.com – I have a video recorded with a very simple camera that looks quite dark. I want to increase the brightness, and while I can do it by hand, I have seen some options to apply "smart" optimizing algorithms, such as this one: http://strony.aster.pl/paviko/hdragc.htm Does anyone know of something like this for any of the well known video tools in Ubuntu? (ffmpeg, mencoder, Avidemux, PiTiVi, Kdenlive, Openshot... are all fine by me!) Thanks! (HowTos)