You’re going to have to buy some stuff.
Your Hitachi camera is going to have some sort of analog out port. You need to take that output and run it into a converter box of some type. The converter will change the analog signal to digital which you then connect to your Mac.
the most likely set up is this:
- Hitachi - it probably has three analog outputs, 1 video and 2 audio.
- A cable with three male RCA jacks on one end and a single male end (mini jack) on the other
- an old DV sony handy cam that accepts the mini jack as input and has a DV output port.
- A DV cable with the right connector (small FireWire 400) for the Sony and the right connector for your Mac. Probably a FW400 to FW800
- Depending on your Mac you will need connectors to convert the FW800 to thunderbolt or USB-C
so, the set up connects the hitachi to the Sony with the 3-to-1 analog cable and connects the Sony to your Mac with a DV cable with the right connectors. You then capture the video in iMovie or, if you get audio sync issues, LifeFlix or similar special purpose software.