Vivotek IP Surveillance User Manual download pdf (Page 133)

VIVOTEK - Built with Reliability

User's Manual - 133

2. Recording:

2-1. Keep all recordings for maximum * days - determine the life span of recordings in your

system. Usually old recordings will be erased when the storage volumes become full.

When a storage volume is 90% full, the recorded videos taken on the oldest day (from

every camera) will be erased. Deletion of old les will stop when the used space falls

under 85% again.

When recycling takes place, the system buzzer will be triggered, and the recording task

can be halted temporarily until more storage space is regained.

2-2. Pre-alarm buffer time (seconds) - if the alarm-triggered recording is preferred, set up

a pre-alarm buffer for the system to record video before the occurrence of an alarm. The

congurable options are 3, 5, and 10 seconds. A 20MB memory space is reserved for

each camera, and therefore the pre-alarm buffer time can be shorter if the camera video

is recorded using a higher resolution.

2-3. Post-alarm buffer time (seconds) - if the alarm-triggered recording is preferred, set

up a length of time for the system to record video after the occurrence of an alarm. The

congurable options are: 10, 20, 30, 40, 60, and 300 seconds.

2-4. Enable audio recording - Selected by default. Audio input is also recorded along with

the video. However, audio can be muted by default on some cameras. For example, a

speed dome camera requires the connection to an external microphone, and the audio

function is manually turned on through a managment session with the camera.

2-5. Enable Activity Adaptive Streaming - You can enable the Activity Adaptive streaming

feature to reduce the frame rate of a video stream when there is no activities in the eld of

view. The frame rate of the video stream will return to normal, say, 30fps, when activities

occur in the eld of view. This feature can save a considerable amount of bandwidth and

also the le size.

3. Delete:

To remove a camera from your list, left-click to select a camera on the list, and then click the

Delete button.

Note that once a camera is removed, all alarm settings related to the camera, such as DO and

preset location settings, will be erased.

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Vivotek IP Surveillance User Manual Page 133