Fellow Sony a7iv owner here. I can confirm this works on my camera too.
For older cameras, probably the easiest way to do it (if you don't want to install anything) is to pick up a ~$20 usb HDMI capture card from amazon. Connect the HDMI output on the camera to the capture card. And then set your camera up to output a "clean" video source via the HDMI port.
As I understand it, modern capture cards work without drivers on every OS, just like the modern sony cameras do.
For older cameras, probably the easiest way to do it (if you don't want to install anything) is to pick up a ~$20 usb HDMI capture card from amazon. Connect the HDMI output on the camera to the capture card. And then set your camera up to output a "clean" video source via the HDMI port.
As I understand it, modern capture cards work without drivers on every OS, just like the modern sony cameras do.