V2000/V2100 User Guide
43
4.
Video
4.1
Privacy Zone
Privacy Zone enables user to block out a specific portion of the screen for privacy concerns. It must
apply on all streams, TV output, and live view and it should not affect the motion detection behavior.
There are up to 8 privacy zones for users to define. After setting up a privacy zone, the live view image
will appear with a frame in the area; the color, size and position of the privacy zone can be customized
by user’s preference.
Figure: Privacy Zone Setting
To set up a privacy zone, user needs first Enable the privacy zone by clicking On. Select any of the
eight privacy zones available; the cursor will change to a cross mark to draw the privacy area on the
live scene. To adjust the privacy mask size, left click and drag outline to a desired privacy frame. Also,
user can select a desired color (Black, Gra
y or White) for privacy zone. Press “Save” to make settings
take effect. If you want
to delete settings, click “Clean” to wipe out privacy zone settings.
Notes
Be sure to set the privacy zone slightly larger than the actual area to ensure
privacy concern.
4.2
Enhanced Codec
Enhanced codec is a method to keep low bitrate when H.264 is selected. The implementation of
enhanced codec depends upon 2 key ideas.
Dynamic ROI: This is used for the camera to dynamically adjust compression based on what it
believes is of interest in the scene. For example, the camera would be able to detect objects and
identify which objects require higher or lower compression levels. The function is designed to reduce
the bandwidth by decreasing the image quality on the static or irrelevant area within the whole scene.
Dynamic GOP: Adaptive GOP size. Comparing the average-sampling of current standard fixed GOP
structure with dynamic GOP, the encoder has great freedom in I-, P- and B-frame selection. The
dynamic GOP structure keeps temporal important information of frames in the encoded video, which
helps in adaptation to bandwidth decrease and temporal-SNR quality tradeoff decision. It also helps in
storing more information with restricted resources, resulting in increasing code efficiency and better
user perception.
