Inaccurate time can lead to missing or inadmissible video, yet this topic is often overlooked, with cameras and servers left defaulted, synchronized to different sources or not at all. However, setting up a proper time server in a surveillance network often requires little time or money and can prevent or mitigate these potentially disastrous issues.
In this guide, we review network time for surveillance, covering these key topics:
- Time protocols: NTP, SNTP, Windows Time
- How cameras handle time sync - on arrival vs camera timestamp
- How recorders / VMS synchronize time
- Time server options
- What you should sync
- IP vs Non-IP Cameras