Vivotek VS8801 Specifications download pdf (Page 93)

VIVOTEK

User's Manual - 93

If you enalbe the adaptive recording and enable time-shift cache stream on Camera A, only when an

event takes place on Camera A will the server records the streaming data at the full frame rate. This

methodology only requires transferring the Intra frame data during normal operation, and full-frame-rate

videos in the occurrences of events, and thus saving users of network bandwidth and storage space.

The alarm trigger includes: motion detection and DI dection. Please refer to Event settings on page 87.

■ Pre-event recording and post-event recording:

The Video Server 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 rst.

■ Source: Select a stream as the recording source.

Time

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 have setup the triggering sources such as

Motion Detection, DI devices, or Manual Triggers.

► When there is no alarm trigger:

- JPEG mode: records 1 frame per second.

- H.264 mode: record one I frame only.

- MPEG-4mation.

► When the I frame period is <1s on Video settings page, it should be forced to make the I frame period

to 1s when adaptive recording is activated.

► To enable adaptive recording, please also enable time shift caching stream and select a caching

stream on page 56, Audio and Video settings.

► To enable recording notication please congure Event Settings rst. Please refer to page 79.

NOTE:

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Vivotek VS8801 Specifications Page 93