Just use any screen recorder (e.g. QuickTime player on MacOSX can do that). And then arrange your screen in any way you want, e.g. put your slides on it, and ma

Just use any screen recorder (e.g. QuickTime player on MacOSX can do that). And then arrange your screen in any way you want, e.g. put your slides on it, and maybe some window in the corner which shows the webcam (video of yourself).