Unless you have an HDMI recorder, which, at least up to the recent release of the comparatively cheap (currently $284 on Amazon) Blackmagic Design Intensity Extreme, wasn't at all available for Mac users (my dedicated article HERE) OR want to record your screen's content without any cables and/or in a completely mobile way (it's this group that I belong to, recording even games in the gym or when stretching before swimming – now, imagine dragging around at least a MacBook Air and the Blackmagic device to such not really electronics-frien