ZoneMinder Forums

Or sometimes 'Time to next event = 2 seconds', whatever.

I'm trying to watch a single event, I see it, then I see this message, then I see a glimpse of it again then I see this message, then I see a glimpse of it again then I see this message, etc. Continuously. During the same, one single event. What the heck is going on??

Anybody? Have any idea why this occurs?

its because the refresh dosn't take into account the loading of the frame that could very I find when putting it a a second setting it to still frames helps

kingofkya wrote:its because the refresh dosn't take into account the loading of the frame that could very I find when putting it a a second setting it to still frames helps

Thanks for the reply but I'm not understanding what you did that helps? I sure would like to eliminate those black message frames breaking up the video.

Are your captured events shorter than 3-5 seconds?

I'm pretty sure they were all over 5 seconds, I had the pre image count set to 90 and the post set to 60 on 30fps cameras so that should have given me at least 5 second events. Now I have them set to 120 and 180 respectively.

But every once in while a camera goes into Alarm and doesn't come out, have to stop and restart ZM, so I've had some 22,000+ seconds events and I think this occurred on those too. Those long events happened this past week again but I didn't watch them and I've since deleted all those events.

I'll make note of the event length next time I see this.

I am having the same issue on one of my cameras. Did you ever figure out the solution?

I am seeing the same problem periodically. I have 5 monitors, but it only occurs on #2 which is an analog camera coming in via a PV183 capture card I bought from BlueCherry. The other analog camera being captured with this card never exhibits the problem, nor do my 2 IP cameras or my USB webcam. Monitor-2 exhibits the problem once per every ~50 events captured. When the message appears the video stops playing and all the controls in the event window are frozen; to recover I have to close the event window. If I pick that same event to play back again, the same thing happens.

One other possible clue: this monitor has an external trigger. The area being viewed by this camera is also covered by a motion sensitive flood light; I run a HEYU script on another computer which triggers this monitor whenever the motion sensor is tripped. This may explain why only Monitor-2 is affected on my system.

Anyway, just thought I'd share some more data in case it helps someone figure out the bug.

UPDATE: I took a closer look at one of my events that exhibits this problem. I cannot play the event back, but I can export it and look at the individual .JPG files. Judging from the timestamps in the upper left hand corner of each image, it appears that the captured frames are being saved out of order. For a motion event which begins at 22:00:14, 001-capture.jog has a timestamp of 22:00:16, 002-capture.jpg has a timestamp of 22:00:17, and 003-capture has a timestamp of 22:00:14. When this event is played back, the first two (out-of-order) frames are displayed, but when the playback hits the third (correctly-ordered) frame it freezes, displaying the "Time to next event = 1 seconds" message.

FWIW, I also checked my HEYU log; the last external trigger was sent at 21:59:47; this triggered a different event which recorded correctly.

For all the

"Time to next event = xx seconds"

It only happened on the Bluecherry PV-149 cards. The Axis cameras or any IP camera does not do the same.

What the issue was I increased the buffers to the following

Image Buffer Size 60
Warmup Frames 25
Pre Event IC 60
Post Event IC 90
Stream Replay IB 1000
Alarm Frame Count 2

When I had those settings the PV-149's event playbacks would always have the "Time to next event = 2 seconds". As soon as I switch it to:

Image Buffer Size 40
Warmup Frames 25
Pre Event IC 30
Post Event IC 60
Stream Replay IB 1000
Alarm Frame Count 2

All those errors ceased and now playback works perfectly.

Hope that helps someone.