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Video capture card resources

By default, the resources of the video capture card used to process and digitize video signals are uniformly distributed between cameras. The frame rate of the digitized video signal is limited by the ADC resources for video signal processing and digitization.

Axxon PSIM software package components that are used for configuring video capture cards can give additional ADC resources to one or more cameras, and thus increase the frame rate of video signals from these cameras. At the same time the frame rate of the video signal from other cameras decreases.

The joint use of Axxon PSIM and video capture cards provides the following options for reallocating video capture card resources between cameras:

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1. Video signal processing and digitization with a high frame rate is a resource-intensive process. When the video signal frame rate increases, configuration requirements increase for the computer used as a server.
2. Video signal is transmitted to the Remote Workplaces with the same frame rate as it is digitized. SoThus, network capacity requirements increase together with the frame rate increase.

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1. Go to the Hardware tab in the System settings window (1).
2. Select the Video capture device object that was created before and corresponds to the configured ADC of the video capture card on the Hardware tab in the objects tree (2). The settings panel for the selected object is displayed in the right part of the Hardware tab.
   
3. If it is necessary to increase the total frame rate up to the maximum allowed value, move the Rate slider to the max position (3).
4. If it is necessary to reduce the total frame rate to the minimum allowed value, move the Rate slider to the min position. The minimum total frame rate of video signals, digitized and processed by a selected ADC, is three times lower than the maximum allowed one.
5. If it is necessary to return the default decimation settings, move the Rate slider to the middle position. The default total frame rate is two times lower than the maximum allowed one.
6. Click the Apply button (4).
7. Close the System settings box window and restart restart Axxon PSIM.

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When a camera has a 1/2 process queue, its video signal is processed in every second frame. SoThus, the digitization frame rate on this camera is the half of total frame rate of the considered ADC.

When a camera has a 1/3 process queue, its video signal is processed in every third frame. SoThus, the digitization frame rate on this camera is one third of total frame rate of the considered ADC.

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