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.

Note

Using this function is recommended; however, make sure you perform tests under actual conditions before starting operations.

Live-View Frame Rate Adjustment

[Auto Adjust Frame Rate] in the [Viewer Settings]

* 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] 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

* 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. You can check the operating status of the function via the Event Search dialog 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].

Proper Operation of Sensor Event Recording (Optimization of Sensor Arrangement and Sensitivity)

Frequent sensor events result in high CPU load on your PC, and the recording frame rate may be reduced or recording may be interrupted. If you have 10 or more sensor events per minute continuously, we recommend continuous recording.

For each Storage Server, it is recommended to lower the sensor sensitivity or use continuous recording.

• 20,000 or more sensor events occur a day.
• 10 or more sensor events occur every minute.

Tip

Check the number of sensor events with the status bar.

Optimization of Motion Detection Recording (Index)

The Motion Detection recording is not suited to applications where high levels of reliability are required. Therefore, it is recommended to use continuous recording for monitoring or other purposes if consistently high levels of reliability are required. Canon accepts no liability whatsoever for faults, etc. resulting from the use of the Motion Detection recording.

Frequent motion detection events result in high CPU load on your PC, and the recording frame rate may be reduced or recording may be interrupted. If you have 10 or more motion detection events per minute continuously, we recommend continuous recording.

Frame Rate indicates the number of frames for Motion Detection recording. Lowering this value mitigates load on the Storage Sever.

Tip

• Longer before-event recording with insufficient memory may lead to the use of disk-based virtual memory which will greatly reduce performance. Shorter before-event recording will reduce memory usage.
• The full requested duration of post event recording may not be available due to data size and network delays.

Motion Detection Setting for Each Camera Model

VB-C500VD, VB-C500D, VB-C60, VB-C50i/VB-C50iR, VB-C50FSi, VB-C50Fi, VB150

Configure the Motion Detection settings on the Camera Server.

Please see the Camera Server User's Manual for details.

For the VB150, [Video Input] must be set to [Single].

VB-C300

Configure the Motion Detection settings on the Storage Server.

See "Set Motion Detection Recording" for details on how to set the Motion Detection parameters. Typically, set the total frame rate to 150 fps (e.g., 30 fps with five cameras) with the display resolution of QVGA.