Yes, the submini jack in the console is audio AND VIDEO. It needs NTSC style video for US-spec cars (i.e. the old analog TV); I believe it'll also accept PAL video if the vehicle's "variant settings" (variables in the hidden engineering menus of the Tech package that tell what options the car has and where in the world it was sold). See the thread at
Aux jack wiring and ideas
There is an iPOD cable that will allow iPODs with analog video output capability to send video to the Tech package dash screen. The unit doesn't accept digital video streams though.
Also, the Tech package has a second connector port (on the back of the head unit, inside the dash) for a rear LCD screen. Remember, the basic Tech package hardware is also used on the Equus with a rear screen and a rear DIS control panel. I imagine that would display video even while driving. The connector on the back of the head unit uses the same cable pinout as the one driving the dash LCD screen but a different plastic connector shell - to keep the cables from being mixed up on the assembly line. A little snipping is all it would take to convert a "dash LCD cable" into a short "rear LCD cable" or you could find the right part number and order it. And order a rear screen plus housing.
mike c.