Vivotek IP8352 manual Pre-eventrecording and post-eventrecording

VIVOTEK

If you enable adaptive recording and enable time-shift cache stream on Camera A, only when an event is triggered on Camera A will the server record the streaming data in full frame rate; otherwise, it will only request the I frame data during normal monitoring, thus effectively save lots of bandwidths and storage�

Bandwidth
I frame ---> Full frame rate --->	I frame
Bandwidth
Activity Adaptive Streaming
for Dynamic Frame Rate Control
Continuous recording	Time

NOTE:

►To enable adaptive recording, please make sure you’ve set up the trigger sources such as Motion Detection, DI Device, or Manual Trigger�

►When there is no alarm trigger:

-JPEG mode: record 1 frame per second�

-H�264 mode: record the I frame only�

-MPEG-4 mode: record the I frame only�

►When the Intra frame period has been set to larger than >1s on Video settings page, the Intra frame period will be forced into 1s when the adaptive recording is activated�

The alarm trigger includes: motion detection and DI detection� Please refer to Event settings on page 85�

■ Pre-event recording and post-event recording

The Network Camera has a buffer area; it temporarily holds data up to a certain limit� Enter a number to decide the duration of recording before and after a trigger is activated�

■Priority: Select the relative importance of this recording (High, Normal, or Low). Recording with a higher priority setting will be executed first.

■Source: Select a stream for the recording source.

NOTE:

►To enable adaptive recording, please also enable time shift caching stream and select a caching stream on Media > Video > Stream settings� Please refer to page 77 for detailed instruction�

►To enable recording notification please configure Event settings first. Please refer to page 85.

Please follow steps 1~2 below to set up the recording:

1� Trigger

Select a trigger source�

■Schedule: The server will start to record files on the local storage or network attached storage (NAS).

■Network fail: Since network fail, the server will start to record files onto the local storage (SD card).

User's Manual - 103