windows CarPC you can try MiniCam:
That thread has 3 different programs , you want the one from curiosity's signature links.
- It has overlays for GPS and OBDII
- video can be mirrored and flipped upside down individually
- you can run multiple instances for multiple cams by calling the executable with the cam number : "MiniCam.exe 1" and "MiniCam.exe 2" (note that windows wont let you run 2 devices using the same driver so you either get 2 different cams of modify the driver to make a copy under a different name)