Now that huge numbers of people have access to video cameras, today’s invention attempts to add something to the value of the resultant recordings.
As you move about making a movie, the camera will record individual images of the subject which happen to be taken from locations about 6 cm apart horizontally (ie the interocular distance). Cameras which embody accelerometers can be made to identify and link such image pairs.
The pictures can then be recombined to create a 3-D stereo pair (viewable via a stereoscope or, with a bit of recolouring, via the usual red/green filtered spectacles).
For slow camera movement, there may even be sufficient numbers of these views to create a 3-D movie of the event in question).