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AXIS 207W/AXIS 207MW - Configuration
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.
Note that a maximum bit rate can be used
for both variable and constant bit rates.
The bit rate type can be set as Variable Bit
Rate (VBR) or Constant Bit Rate (CBR). VBR
will adjust the bit rate according to the images' complexity, thus using a lot of bandwidth
for a lot of activity in the image and less for lower activity in the monitored area.
MJPEG Settings
Sometimes the image size may get quite large
due to low light or complex scenery.
Adjusting the maximum frame size can control the bandwidth and storage used by the
MJPEG video stream. An unlimited frame size value will result in increased bandwidth and
storage usage during low light. Limiting the frame size will compromise the image quality.
To prevent increase in bandwidth and storage usage, the maximum frame size should be
set to an optimal amount. During ideal light conditions follow these instructions to
optimize frame size:
Click the View button and a pop-up window appears with Frame size
and Compression in
the text field. Note the current frame size. To calculate a maximum frame size add 10 -
20% to the current frame size. Enter the calculated frame size in the Limited to… field.
Verify the quality of the image in low light. Increase the maximum frame size if needed.
Note: The maximum frame size allowed increases com
pression in order to maintain a low
frame size, starting at the compression value set under Image Settings > Image Appearance
> Compression. When compression is 100, the image cannot be made smaller. You may
also need to adjust the Resolution setting if a smaller frame size is needed.
Audio
The built-in microphone in the AXIS 207W/AXIS 207MW provides one-way MPEG-4,
ISMA, 3GPP compatible audio.
Enable audio - Check the box option to enable Audio
(disabled by default).
Audio input - These settings are used to fine-tune the audio stream. Please see the
online hel
p for more information,
Note:
To receive synchronized video and sound, it is recommended that the camera time is synchronized with an
NTP Server. This is enabled under System Options > Date & Time. See the online help for more infor-
mation.
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