I wrote down some general thoughts and practical advices about the making of video lectures: the english version and the french version.
These are not precisely lectures but serve as introductions to the first programming class, whose topic I stole from Robert Sedgewick's excellent Mooc. I made these early on, in a slight hurry, and edited them myself; there are some imperfections, but they are reasonably easy to follow, even when not a computer-scientist.
These are taken from the first lesson of the course and were edited by Frédéric Picazo; the most interesting one is probably the second one which can be viewed by itself: