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Bitrate Control for IP Video

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Bitrate Control for IP Video

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This white paper presents and compares the bitrate control methods used in network video products from Axis: ABR, VBR, and MBR. We discuss and compare the suitability of the methods for different types of scenes and present the parameters that affect the efficiency of each method. CBR (constant bitrate) is briefly presented in an appendix, as it is used broadly by other network video providers. A bitrate controller is a mechanism that keeps track of the bitrate of encoded video and determines if it needs to be reduced. Different bitrate strategies can be employed to achieve a bitrate that matches the bandwidth and the storage capacity of the video system.

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