Image rotation: This lets you flip the image in your Web browser. NOTE: This
setting does not have any effect on videos transmitted via FTP or email.
VBR/CBR: In MPEG4 compression mode, you can select either VBR or CBR.
Variable bitrate (VBR) varies the amount of output data per time segment. VBR
allows a higher bitrate (and, therefore, more storage space) to be allocated to
the more complex segments of media files while less space is allocated to less
complex segments. This means that the video stream size is constantly adjusting
to the video material currently being transmitted. If there is a lot of motion in
the video and a lot of details, the bitrate goes up and the frame rate drops. If
the image shows little motion or areas with few details (walls, etc.), the bitrate
goes down and the frame rate goes up. VBR produces a better quality-to-
space ratio compared to an equivalent CBR algorithm and is, therefore, the
recommended option.
Constant bitrate (CBR) means that the rate at which a codec’s (compressor/
decompressor) output data should be consumed is constant. CBR is useful for
streaming multimedia content on limited capacity channels since it is the maximum
bitrate that matters, not the average. Thus, CBR would be used to take advantage
of all of the capacity. CBR would not be the optimal choice for storage, as it
would not allocate enough data for complex sections (resulting in degraded
quality) while wasting data on simple sections.
Image quality (VBR): Select the image quality level of the video output. Select
Level 1 for the best possible quality and Level 28 for the best possible compression
at the highest possible frame rate. A good value is Level 4: It generates a full-
motion video (30 fps at highest image resolution) over a 100 Mbps network
connection with a very good image quality. Higher values (Levels 3, 2, 1) increase
the image quality even more, but at the cost of frame rate.
Bitrate (CBR): Specify the bitrate. Values range from 1 (30 kbps = highest
compression, smallest image frame, highest frame rate) to 130 (3,900 kbps =
lowest compression, biggest image frame, lowest frame rate).
Color Control
You can adjust the Brightness, Contrast, Saturation and Hue settings of the live
image. Normally, it is not necessary to change these values, as the camera
automatically adjusts for changing light conditions.
Direct Image Access
This URL allows a direct connection to the internal JPG image of the camera. It’s
useful for integrating the live video of the camera in third-party video surveillance
applications. (http://camera_address/jpg/image.jpg is an example address.)
Click “Save” to submit the Video settings to the camera.
PTZ Control
This screen allows you to store up to 20 presets and to create a “guard tour” (a
sequence of steps automatically performed by the camera).
14
CONFIGURATION