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5 Mega-pixel Vandalproof IR PoE IP Camera
ICA-E5550V
3.9.1 Camera Options
In general, the Camera Options allows users to set line frequency of the camera.
Line Frequency is the function that adjusts the shutter speed options to match with the
frequence of artificial light source of given country. For example, in Europe the light frequency
(due to power supply frequency of lights) is 50Hz, that is 50 flashes per second. By setting line
frequency to 50Hz in such case, the shutter speed options will be proportional with light source
frequency, such as 1/25s, 1/50s, 1/100s, etc.
It is necessary to have the camera's Line Frequency adjusted according to the power
frequency of the light source to avoid flickering effect.
The natural light source (sun light) is a seamless flow of light – the Line Frequency setting
does not matter for the cameras that are only exposed to natural light.
3.9.2 Video
The sub-section is also named Video. For Audio supported cameras, there will also be a
sub-section named Audio. The video section is divided into tabs. The functionality of each tab
is explained separately below.
Upon opening the sub-section named Video, the live view of the Stream 1 of the camera will
appear. Since the camera is a dual stream device, it is possible to see how each of the 2
streaming configurations looks like, by selecting either Stream-1 or Stream-2 under the live
video window.
Usually, Stream-1 is configured to be high quality video with maximum resolution and frame
rate for recording purposes while Stream-2 is usually a moderate quality stream for live view
purposes of the VMS, to reduce VMS computing power during video decoding of multiple
channels.
Compression
The "Compression" section allows the user to define the compression settings of the video
stream 1 and stream 2. The purpose of compression is to reduce the bandwidth and VMS
storage consumption.
Usually stream 1 is configured to be the best quality stream for NVR recording purposes while
the stream 2 is configured to be with the basic quality for the live view of NVR, to minimize the
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