I'm doing direct to disc recording. To the camera time stamps into the recordings (in another thread) I was told to do this (I rewrote this a bit from fendermans instructions, but only for a bit more clarity): Starting new thread as the other is kind of all over the place): To sync the times on all cameras do this (if you don’t camera times will drift): Login to a camera (repeat this procedure for all cameras) navigate to "Basic or Advanced Configuration" (left side) click System (left side) click on Time Settings tab. set "Time Sync." to the IP address of your Blue Iris server: Set "NTP Port" to 123 “Interval" as desired. (1440 minutes is 24 hours which is good enough). Then install this "NetTime" timer server utility on your Blue Iris Server... Not doing this… http://www.timesynctool.com/ Instead I am using time.windows.com. Tests ok but 1 camera has drifted a few seconds, so must not really be working. I downloaded NetTime (TimeSynctool.com) and installed it on my BI computer. I log into my camera and do as above, but put "time.windows.com" in the server address, then click test, it claims it works, but one camera has already drifted a couple of seconds over the last few days. I'm sure this is wrong. If I put my Blue Iris computer's IP address in the server address, then test it, it fails. NTP port is 123, Interval is 1440, not that the interval matters. Server address is 192.168... it doesn't like ":81", says illegal format or something like that. When I enter 192.168.X.X (BI computer IP address), it accepts it, but the test fails. What am I missing? I can be a bit dense. Once I (with your help) get it, I make a "how-to" for future reference. Thanks.