It really depends on the software that you are running. You need a sequencer/DAW that puts out either SMPTE timecode, or MIDI Time Code, then you need some video player software that can accept SMPTE or MIDI Time Code. Next, you need the hardware solution. MTC works over MIDI, but I haven't found it to be as solid as I would like. There are solutions for SMPTE to work across a number of different interfaces, such as RS-422 and even Firewire. I haven't tried that yet though, so I can't give any specifics. RS-422 has been the traditional solution for linear editing systems for decades.