Luma Surveillance LUM-500-DVR-16CH, Техническое справочное руководство

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advantage of constant rate is that it is predictable and consistent,
as long as your system can handle the load. Variable is best for
congested networks, because the camera sends less data if no motion
or alarms are active. However, this can result in lost data while a
camera decides that motion has been detected.
Video Quality: If you choose variable bitrate (above), this lets you
determine how low video the quality can go. Lower settings free up
more bandwidth at the expense of clarity. Note that if you switch
back to constant bitrate, this field does not update; refresh your
browser if needed.
Frame Rate: This determines how many frames per second the
camera records for the selected stream.
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For recording events (main stream), 10–15 frames per
second is large enough. It is typically unnecessary to record
surveillance footage with frame rates rivaling film and
television.
}
For normal recording (that is, when there is no cause for
concern), 2–4 frames per second is good enough. Note that
if the NVR cannot read the data from the IP camera, it will
display its default setting.
Max. Bitrate: Enter the maximum data-transmission value you want
for the camera. This choice depends on your camera, the processing
capacity of your recorder, and the load on your network. Cameras
from Luma Surveillance and Wirepath Surveillance can typically
transmit up to 8000 Kbps (depending n your network, etc.). Your
recorder can receive a full suite of cameras at a rate of 4000Kbps,
with fewer cameras allowing the recorder to handle an increased
bitrate.
For example, a 16-channel recorder can handle a total of 64Kbps,
which translates to a full suite of 16 cameras, each operating at
4000Kbps.
Video Encoding: At the moment, H.264 is the only encoding method
supported. This item is here for forward compatibility with future
upgrades.