blender can do screenshots or capture a vid from work area  but its not so friendly

or theres wax getting a bit dated now but some times old an simple is better lol ;-) 

http://www.debugmode.com/wax/

could try checking out giveaway of the day, they have given out this sort of soft before but they do send ads etc so can be annoying

off to check them links  lol see if I can find one that knows what I want to do rofl its so flipping annoying when you finish a tut and forgot to start the vid going