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VIVOTEK
114 - User's Manual
The alarm trigger includes: motion 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 that temporarily holds data for a period of time. Therefore, when an
event occurs, the camera can restrieve image frames taken several seconds ago. Enter a number to
dene 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 processed rst.
■ Source: Select a video stream as the recording source.
► To enable recording notication please congure Event settings rst . Please refer to page 94.
If you enable adaptive recording on a camera, 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 saves bandwidths and storage space.
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.
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 network storage (NAS).
■ Network fail: Since network fail, the server will start to record les on the local storage (SD card).
NOTE:
NOTE: