User`s manual

VIVOTEK
112 - User's Manual
The alarm trigger includes: motion detection, tampering detection, and DI detection� Please refer to Event
Settings on page 94�
■ Pre-event recording and post-event recording
The Network Camera has a buffer area (a ash memory); 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 rst.
■ Source: Select a stream for the recording source.
► To enable recording notication please congure Event settings rst . Please refer to page 94.
If you enable adaptive recording on Camera A, only when an event is triggered on Camera A will the
server record the full frame rate streaming data; otherwise, it will only request the I frame data during
normal monitoring, thus effectively save lots of bandwidth and storage space�
Please follow the steps below to set up the recording�
1� Trigger
Select a trigger source�
■ Schedule: The server will start to record les on the local storage or a networked storage (NAS).
■ Network fail: Since network fail, the server will start to record les on the local storage (SD card).
NOTE:
Time
Bandwidth
Bandwidth
Activity Adaptive Streaming
for Dynamic Frame Rate Control
I frame ---> Full frame rate ---> I frame
Continuous recording
► To enable adaptive recording, please make sure
you’ve set up the trigger source 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�
► When the I frame period is >1s on Video settings
page, firmware will force decrease the I frame
period to 1s when adaptive recording is enabled�
NOTE: