Constant bitrate
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Constant bitrate (CBR) is a term used in telecommunications, relating to the quality of service. Compare with variable bitrate.[1]
When referring to
CBR is not optimal for storing data as it may not allocate enough data for complex sections (resulting in degraded quality); and if it maximizes quality for complex sections, it will waste data on simple sections.
The problem of not allocating enough data for complex sections could be solved by choosing a high bitrate to ensure that there will be enough bits for the entire encoding process, though the size of the file at the end would be proportionally larger.
Most coding schemes such as Huffman coding or run-length encoding produce variable-length codes, making perfect CBR difficult to achieve. This is partly solved by varying the quantization (quality), and fully solved by the use of padding. (However, CBR is implied in a simple scheme like reducing all 16-bit audio samples to 8 bits.)
In the case of
See also
References
- ^ a b drewbatgit (2023-06-20). "Constant Bit Rate (CBR) Encoding - Win32 apps". learn.microsoft.com. Retrieved 2023-07-15.