Canon VK-16 v2.1, Руководство администратора

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Operation Guideline for Recording and Viewing
The following explains the automatic frame rate adjustment function for viewing and recording.
This function checks the load of the PC on which the Storage Server and the Viewer are running and adjusts
the frame rate for video recording and live viewing.
Live-View Frame Rate Adjustment
[Auto Adjust Frame Rate] in the [Viewer Settings] ( P. 5-16)
* This option is enabled by default (recommended).
When displaying live video, the Viewer requests the camera to send the video at the specified frame rate (
[ Max. Live Frame Rate ] on P. 5-16).
If you use this function, you can maintain a stable display of live video with a temporarily lowered frame rate
even if your PC temporarily becomes highly loaded for some reasons.
If you do not use this function, menu operation or display response may be affected when the load on your PC
is high.
For video in MPEG-4 format, the [ Max. Live Frame Rate ] and [ Auto Adjust Frame Rate ] settings are ignored,
and the frame rate that is sent from the camera is displayed.
Recording Frame Rate Adjustment
[Reduce recording frame rate when disk is under high load] in the [Storage Server
Configuration] dialog (
P. 3-10)
* This option is enabled by default (recommended).
When the network recording software writes images received from cameras into the hard disk, if the load
(mainly the load of writing into the hard disk) of the PC on which the Storage Server is running is too high, the
software cannot write the images immediately.
If the amount of the image that is waiting to be written increases for a certain period of time, the Storage Server
considers the PC to be highly loaded. When this happens, the Storage Server stores images at intervals rather
than storing all of the images the Storage Server received, in order to reduce the PC load.
If you use this function, you can avoid recording failure as much as possible even if your PC temporarily
becomes highly loaded for some reasons. When using this setting, adjust the video recording frame rate so
that it does not drop below 0.5 fps.
Note that events are generated when the network recording software starts and ends the operation of the
function (
P. 9-34, "Changing the recording frame rate"). You can check the operating status of the function
via the Event Search dialog ( P. 5-58).
If you do not use this function, recording may be interrupted when the load on your PC is high. This software
cannot detect the recording interruption.
This function is disabled when the [ Resolution ] is set to [ MPEG-4 ].
Note
Using this function is recommended; however, make sure you perform tests under actual conditions before
starting operations.
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