Axis Communications 207MW - Manual (Page 18)

18 AXIS 207MW - Configuration
Video Stream
Define the maximum video stream time per session in seconds, minutes or hours, or set it
as unlimited. When the set time has expired, a new stream can be started by refreshing the
page in the browser. Note that the maximum video stream time does not apply to clients
connecting via multicast.
The frame rate allowed to each viewer can also be limited, to avoid bandwidth problems
on the network.
Test
For a preview of the image before saving, click Test. When satisfied with the settings, click
Save. Please note that the preview image will be in JPEG format, even though the settings
are valid both for Motion JPEG and MPEG-4.
Please refer to the online help for more information.
Advanced - Camera Settings
This page contains settings for fine-tuning the video image. These include the color level,
brightness, sharpness and exposure control.
Please see the online help for further information on these settings.
Low Light Behavior
Exposure priority defines the balance between image quality and the frame rate. Higher
image quality may reduce frame rate and increase motion blur. A prioritized frame rate
may instead increase the image noise. Depending on requirements, use this to give higher
priority to the image quality or to the frame rate.
Advanced - MPEG-4 Settings
GOV Settings
The GOV structure describes the composition of the MPEG-4 video stream. Setting the
GOV-length to a high value saves considerably on bandwidth. The Cyclic refresh
parameter gives a smoother bit rate and can be useful if bandwidth is limited.
Note:
Cyclic refresh should not be enabled if Event handling is enabled and the file format is set to MPEG-4 in
Upload images/video (see Setup > Event configuration > Event settings).
Bit Rate Control
Limiting the maximum bit rate is a good way of controlling the bandwidth used by the
MPEG-4 video stream. Leaving the Maximum bit rate as unlimited will provide
consistently good image quality, but at the expense of increased bandwith usage whenever
there is more activity in the image. Limiting the bit rate to a defined value will prevent
excessive bandwidth usage, but images will be lost when the limit is exceeded.