Will DVR, IP Camera, NVR port-forwarding affect PCI DSS Compliance?

Yes, opening ports will cause you to fail PCI compliance category. In order to be compliant with PCI DSS, you will need to order an additional IP address from ISP. By adding a second router to separate the Credit card machine from the network, it won’t pass a PCI DSS Security test. Or use P2P Services from the Recorder or IP camera .