As some users of Hikvision devices have already noticed, DDNS service company's own (HiDDNS) You are no longer accepting new user registration, and is expected to also not accept the registration of new devices from 16 February 2017. see below, the statement made by Hikvision, the reason for...
At first I can say, yes it is safe, the hikvision has the most secure equipments, but you know that nothing is really safe when it is open to the internet. So I don't recommend to have cameras inside the bedroom. I know it is hard to someone "hack" your cameras specifically, but I don't like to...
The most common reasons to this kid of problem, are HD and power supply.
Do this test: Disconnect the HD, and let the NVR running for several minutes.
If you know how, you can test the output voltage of the power supply, and the voltage that is arriving on the board.
When you mark to record 'continuous' (and activate alarm, motion detection and event), it will record 24/7, so you can search the images by date and time; and you can search by event. In this case the 'event' option is just to organize, so if you want to see images of an specific event you don't...