Yeah, it's possible to record the stunts from TV (analog signal) and transfer them to digital format (aka capture) if he has a TV tuner card. I have one myself and this works for analog cameras, so it should work for PS2. But the stunts he captures will look like crap because you need a high end comp to capture in high quality and resolution, or have a hardaware accelerator on the tuner card (and only the most expensive ones have those).
So it is possible, but beware of the quality.