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ONVIF: Is it true...TimeSynch

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Dario View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dario Quote  Post ReplyReply Direct Link To This Post Topic: ONVIF: Is it true...TimeSynch
    Posted: 07-Jul-2011 at 11:44

"Time Synchronization

ONVIF conformant devices generally must authenticate as part of the ONVIF core specifications’ security provisions. As timestamps are involved in this communications transaction between camera and VMS, not having synchronized clocks can result in connection failures.

Some VMS vendors have demonstrated the importance of synchronizing camera and VMS clock. When not synchronized, connection to VMSes failed.

Unless cameras begin to support ‘out-of-box’ syncing with NTP sources or VMSes, this will present an added burden to the administrator. Even after an initial connection is achieved devices may ‘drift’ out of time-sync causing ‘drops’ or reliability issues."


Source: ipvideomarket.info

http://ipvideomarket.info/report/onvif_ip_camera_test
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Dario View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dario Quote  Post ReplyReply Direct Link To This Post Posted: 07-Jul-2011 at 11:48
You might have to copy/paste the URL in web-browser...



Edited by Dario - 07-Jul-2011 at 12:21
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dario Quote  Post ReplyReply Direct Link To This Post Posted: 07-Jul-2011 at 16:15
Will time difference in Digifort server & camera, cause the camera/onvif driver not to work properly with Digifort?

Should we consider time synching all devices when using onvif?
Should we always do it regardless of driver used?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Eric Quote  Post ReplyReply Direct Link To This Post Posted: 07-Jul-2011 at 22:43
To be honest we even didn´t find such type of synchronization, all ONVIF cameras we tested over here worked fine with current implementation
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dario Quote  Post ReplyReply Direct Link To This Post Posted: 08-Jul-2011 at 08:26
 
   // Parse out the device time from aSystemDateAndTime. 
   // Either UTCDateTime or LocalDateTime or both should be present. 
   // From ONVIF 2.0 UTCDateTime is mandatory, but before that it was not. 
   // Lets handle both cases so that we can get the LocalTime from old devices 
   // or we may fail to authenticate and not be able to e.g. upgrade firmware.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dario Quote  Post ReplyReply Direct Link To This Post Posted: 08-Jul-2011 at 08:27
Maybe some devices do need it...
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