Show snapshots in alarm preview

MIP
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1

Hi,

I have a plugin in the event server with it’s own items from which we receive events. This works very good.

Now we need to add snapshots to those events in order to show them in the alarm preview pane.

This works perfect when we have in the "ReferenceList’ of the event a reference to a camera.

However, not all items are linked to a camera, so in those cases, the referencelist is not provided.

When this is the case, the snapshots do not appear in the alarm preview.

What can I do to show the snapshots always in the alarm preview pane?

Thanks,

Alex

2

I believe that what you describe when referring to ReferenceList is recorded video and your observation is that the recorded video is not showing for an alarm that has no camera associated with it. This is by design, an alarm preview should not present pictures from a camera not associated with the alarm.

There is a Snapshot feature for Analytics Events which is independent of camera associations. You can see this used in the LibraryEventGenerator sample.

It is important to note that using this you are not referring to recorded images in the recording server but instead saving images in the SQL database. It is important to be aware of the extra resources usage by implementing this, you can introduce usage that will cause the requirements for SQL Server for the XProtect site to grow.

There is a big difference between using the recoded images in the recording server and using snapshot images stored to the SQL, I hope I have interpreted your question correctly, if my answer does not fit please elaborate on your question.

3

Hello Rie Kito,

I’m using indeed shapshots in the event.

The issue is that they seems to be only shown when the event also has a camera in the referencelist.

If the referencelist is empty, the snapshots are not shown, and the alarm preview pane stays black

Thanks,

Alex

4

Can you please see this question - https://developer.milestonesys.com/s/question/0D50O00005lS6sGSAS/sending-custom-image-in-alarm

Are you using Alarm directly and seeing the same issue as described? If not, for further investigation, can you please document your code for us to get a deeper understanding?

5

Hello,

I updated the TriggerAnalyticsEventSDK sample to include snapshots.

In attachment the code and some screenshots.

If I choose a camera as source for the event, the alarm preview pane shows the snapshots. If I choose something else than a camera, the snapshot is not shown.

Thanks,

Alex

371×480 19.1 KB

6

This sample has just been verified to work with a user-defined event as source. Please try it.

http://download.milestonesys.com/MIPSDK/Samples/AnalyticsEventTriggerViaLibrary_includeSnapShot.zip

7

Yes, this works when you select a camera as source, but not if you select another type of device.

For my test I created the following setup:

Capture

When selecting the camera as source device, there is no problem. When selecting the driver itself, the snapshot is not shown.

8

According to your image, your microphone is disable, this “disable” means that the device (the microphone) is not existing, it is like a deleted device. Can you please enable your microphone?

9

Hello,

When enabling the camera, I can select it as source in the test program.

When doing that, the snapshots are not shown as well.

The snapshots are only when I select a camera as source.

Thanks,

Alex

10

I modified the sample and did the initial test. I retested because I wanted to test with a microphone, now I find that only cameras works, precisely as you have observed. I too find that if the source is an event or a microphone the snapshot is not shown. I am unable to understand now how I could have different test results last time I tested..

I will discuss with Milestone Development whether the it is a design choice that snapshots are only displayed if the source is a camera.

11

ok, thanks for the update.

to be complete: if the source is not a camera, but you have a camera in the ‘ReferenceList’, the snapshots are shown as well.

12

We have now both a workaround and a patch.

While investigating the issue we found that if the Alarm Preview plugin sample is deployed the snapshot is shown even if the source is not a camera and no cameras are associated with the event or alarm definition. The suggested workaround is that you develop your own alarm preview plugin, you might be able to find relevant information to display in your own alarm preview plugin. (It is not possible to make an alarm preview plugin that does not display.)

For Smart Client 2020 R1 b, a patch-installer is now available. - https://developer.milestonesys.com/s/article/XProtect-Smart-Client-2020-R1-cumulative-patch-installers

13

That’s great!

Thanks and have a nice day,

Alex

14

Hello,

Can this fix also be included into the 2019 R3 patches? (Or maybe it is already the case?)

Thanks,

Alex

15

The patch for 2019R3 has not been developed.

Milestone does recommend that you upgrade the Smart Client.

If there is a reason for not wanting to upgrade the Smart Client I will make a request with Milestone Development for another patch, in that case let me know by posting your feedback here