is there a way to record realtime game in a video ?
U can use gtk-recordMyDesktop or another program of your preference.
Also… you can record the motion of actors as Ipo curves… then… you can render your game as a regular animation.
Fraps, its not free, but it works good.
Use Frontcam its free and very good
Look at #6 in this page… http://www.blendernation.com/2006/12/03/using-blenders-game-engine-for-more-than-just-games/
Its a script for hardware rendering where the output of the graphics card is saved as a series of image files you can put in to a video editor… (make sure you don’t move any window in front of your game while its rendering or the window will appear in the film )